jk501/401 nd: yag industrial laser user...

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JK501/401

Nd: YAG Industrial Laser

User Manual

GSI LumonicsCosford Lane, Swift Valley

Rugby, Warwickshire, CV21 1QNEngland

Telephone: 44 (0) 1788 570321Fax: 44 (0) 1788 579824www.gsilumonics.com

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Document Approval

Issue Revision Author Approved for Issue Date

1 0 T. Cutmore

SOFTWARE DISCLAIMER

Any software forming part of this equipment should be used only for the purpose for which it was suppliedby GSI Lumonics. No changes, modifications or copies (except for producing a necessary back-up copy)shall be undertaken by the User.

GSI Lumonics accepts no responsibility for equipment malfunction resulting from any of the aboveactions.

SAFETY WARNING

It is of the utmost importance that the Safety Section of this manual is read and fully understood beforeany attempt is made to operate the equipment or undertake any actions which might necessitate removalof any parts from the equipment.

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The information contained herein is confidential and is the property of GSI Lumonics. This manual issupplied without liability for errors or omissions. No part may be reproduced, disclosed or used except asauthorised by contract or other written permission. The copyright and the foregoing restriction onreproduction and use extend to all media in which the information may be embodied.

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of 206 Part No: 1EAA80E02

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Table of Revisions

Revision Page Incorporated by Date

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Table of Contents

1. General Information ................................................................................. 131.1 Class of Laser ................................................................................................. 131.2 Intended Users ................................................................................................ 131.3 Documentation ................................................................................................ 13

1.3.1 Pre-Installation Manual............................................................................. 131.3.2 User Manual............................................................................................. 131.3.3 Service and Maintenance Manual ............................................................ 131.3.4 Safety Paragraphs.................................................................................... 14

1.4 Table of Definitions.......................................................................................... 151.5 Customer Support ........................................................................................... 18

1.5.1 Regional Customer Centres ..................................................................... 181.6 CE Mark Information........................................................................................ 181.7 The JK501/401 Series Laser ........................................................................... 19

1.7.1 Main Assemblies ...................................................................................... 191.7.2 Control System and Local Controller ........................................................ 201.7.3 Machine Interface..................................................................................... 201.7.4 Ancillaries................................................................................................. 21

1.8 Technical Specification.................................................................................... 211.9 Safety Interlocks.............................................................................................. 25

1.9.1 Customer Remote Interlocks .................................................................... 251.9.2 Shutter Interlocks (Beampath Interlocks).................................................. 25

1.10 Laser Power Delivery ...................................................................................... 261.11 Operating Parameters ..................................................................................... 28

1.11.1 Changing Parameters .............................................................................. 281.11.2 Parameter Set Selection........................................................................... 30

1.12 Laser Outputs.................................................................................................. 301.13 Operating Guidelines....................................................................................... 311.14 Processing Considerations .............................................................................. 311.15 Fibre Optic Handling........................................................................................ 32

1.15.1 Description ............................................................................................... 321.15.2 Unpacking Fibre Optic Cable.................................................................... 321.15.3 Fibre Installation....................................................................................... 331.15.4 Recommendation ..................................................................................... 331.15.5 Minimum Bend Radii ................................................................................ 341.15.6 Fibre Optic Termination............................................................................ 341.15.7 Fibre Routing............................................................................................ 341.15.8 Fibre Removal.......................................................................................... 35

2. Safety ........................................................................................................ 372.1 Laser Classification ......................................................................................... 372.2 Laser Radiation Hazards ................................................................................. 392.3 Control Measures ............................................................................................ 402.4 Electrical Safety............................................................................................... 412.5 Environmental Hazards ................................................................................... 42

2.5.1 Fire........................................................................................................... 422.5.2 Fume........................................................................................................ 432.5.3 Compressed Gases.................................................................................. 44

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2.5.4 Solvents ................................................................................................... 442.6 Conditions of Use ............................................................................................ 45

2.6.1 Approved Materials .................................................................................. 452.6.2 Approved Process.................................................................................... 452.6.3 Approved Conditions ................................................................................ 452.6.4 Due Authorisation..................................................................................... 46

2.7 Safety Control System..................................................................................... 472.7.1 Safety Category ....................................................................................... 472.7.2 Safety Compliance ................................................................................... 472.7.3 Safety Labelling........................................................................................ 47

2.8 Safety Features ............................................................................................... 532.8.1 Remote Interlock Connector..................................................................... 532.8.2 Workstation Interlock................................................................................ 54

2.9 Training ........................................................................................................... 552.10 Personal Protective Equipment ....................................................................... 552.11 Manual Handling ............................................................................................. 55

3. Laser Operation........................................................................................ 573.1 Overview ......................................................................................................... 573.2 Laser Start-up.................................................................................................. 573.3 Laser Shut-down ............................................................................................. 573.4 Emergency Shutdown ..................................................................................... 583.5 Alarm Handling................................................................................................ 583.6 Monitoring and Control .................................................................................... 593.7 Generic Laser Interface Program..................................................................... 60

3.7.1 Product Registration Screen..................................................................... 603.7.2 Screen Display ......................................................................................... 613.7.3 Overview Screen...................................................................................... 663.7.4 Level 1 Operator Access .......................................................................... 683.7.5 Level 2 Supervisor Access ....................................................................... 86

4. Alarm and Warning Handling ................................................................ 1254.1 Alarm and Warning Display ........................................................................... 1254.2 Alarms........................................................................................................... 125

4.2.1 Alarm Response..................................................................................... 1264.2.2 Alarm Codes .......................................................................................... 126

4.3 Warnings ....................................................................................................... 1314.3.1 Warning Response................................................................................. 1314.3.2 Warning Codes ...................................................................................... 132

5. Optimisation ........................................................................................... 1335.1 Introduction ................................................................................................... 1335.2 Initial Set-up .................................................................................................. 1335.3 Rear Mirror Tuning ........................................................................................ 1345.4 Power Curve Generation ............................................................................... 1365.5 Focus Head Set-up ....................................................................................... 1375.6 Completion .................................................................................................... 1395.7 External Power Control (EPC) Set-up (Customer option) .............................. 140

6. User Maintenance .................................................................................. 1416.1 Introduction ................................................................................................... 141

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6.2 Routine Maintenance Tasks .......................................................................... 1426.3 General Inspection ........................................................................................ 1436.4 Coolant Replenishment ................................................................................. 145

6.4.1 Materials ................................................................................................ 1456.4.2 Draining Procedure ................................................................................ 1466.4.3 Filling Procedure .................................................................................... 148

6.5 Filter Replacement Procedure ....................................................................... 1516.6 De-ioniser Replacement Procedure............................................................... 1556.7 Flashlamp Replacement Procedure............................................................... 159

6.7.1 Materials ................................................................................................ 1596.7.2 Removal Procedure................................................................................ 1606.7.3 Installation Procedure............................................................................. 164

6.8 Cover Slide Replacement Procedure............................................................. 1686.8.1 Materials ................................................................................................ 1686.8.2 Removal Procedure................................................................................ 1686.8.3 Cleaning and Installation Procedure....................................................... 170

6.9 Surge Suppressor Replacement Procedure .................................................. 1736.9.1 Materials ................................................................................................ 173

6.10 Bulb Replacement Procedure........................................................................ 1766.10.1 Materials ................................................................................................ 176

6.11 Bendlock Assembly ....................................................................................... 1776.11.1 Assembly Instructions ............................................................................ 177

6.12 Fibre Optic Cable Replacement Procedure ................................................... 1786.12.1 Materials ................................................................................................ 1786.12.2 Fibre Input Termination Removal Procedure .......................................... 1786.12.3 Installation Procedure............................................................................. 1806.12.4 Fibre Output Termination Replacement Procedure................................. 182

7. Laser Processing ................................................................................... 1857.1 Overview ....................................................................................................... 1857.2 Welding in Continuous Wave Mode............................................................... 1867.3 Welding in Modulation Mode ......................................................................... 1867.4 Jigs and Fixtures ........................................................................................... 1877.5 Shielding Gas................................................................................................ 1887.6 Fume and Spatter Control ............................................................................. 1897.7 Material Welding............................................................................................ 1897.8 Cutting in CW Mode ...................................................................................... 1907.9 Cutting in Modulation Mode ........................................................................... 1907.10 Cutting Fixtures ............................................................................................. 1907.11 Cutting Assist Gas......................................................................................... 1917.12 Inert Assist Gases ......................................................................................... 1917.13 Cutting Different Materials ............................................................................. 1917.14 Process Preparation ...................................................................................... 192

7.14.1 Choice of Focused Spot Size ................................................................. 1927.14.2 Part/Focus Position ................................................................................ 1927.14.3 Weld Shape, Cut Width and Joint Strength ............................................ 1927.14.4 Cover Slide Damage .............................................................................. 1927.14.5 Processing Access ................................................................................. 1937.14.6 Finding Focus......................................................................................... 1937.14.7 Welding .................................................................................................. 193

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7.14.8 Cutting.................................................................................................... 1967.15 Optimisation .................................................................................................. 197

7.15.1 Use of Ramp Up and Ramp Down ......................................................... 1977.16 Record Keeping............................................................................................. 197

8. Spares ..................................................................................................... 199

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Introduction to GSI LumonicsGSI Lumonics is a worldwide technology company specialising in the development, productionand support of Lasers and Laser-based systems. The Company organisation includesmanufacturing operations located in North America and Europe along with a network of supportcentres.

GSI Lumonics offers a complete range of Lasers that cover applications in sectors includingelectronics, aerospace, automotive, advanced manufacturing, packaging and advancedresearch.

GSI Lumonics collaborates with customers to develop Laser systems that increase productivity,solve manufacturing problems and meet the requirements of leading-edge research.

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1. General Information

1.1 Class of LaserThe JK501/401 Series Laser is a Class 4 (IV) Laser system. Refer to Section 2 – Safety forinformation on Laser radiation hazards and safety precautions in a Class 4 (IV) environment.

1.2 Intended UsersAll operators using this Laser equipment must be officially trained and authorised. They mustalso be fully conversant with:

• Laser hazards, safety procedures and correct use of related safety equipment.

• Hazards related to the use of Lasers for materials processing, prescribed safetyprocedures and related equipment.

• The contents of this manual, and therefore the related safety provisions prescribed forthe safe installation of the equipment.

Authorised Personnel are classified as Engineers who have attended official GSI LumonicsTraining Courses and have been certified as competent.

1.3 DocumentationThe JK501/401 Series Laser is supplied with a Pre-Installation Manual and a User Manual.

1.3.1 Pre-Installation Manual

The �� Manual provides information on Pre-Installation requirements, InstallationProcedures and De-Commissioning Procedures.

The Pre-installation section specifies site preparation and the interfaces that need to be in placeprior to Laser delivery. The Installation section provides information and the proceduresnecessary for installation and commissioning.

1.3.2 User Manual

The User Manual provides information on the Operating Procedures, Routine Maintenance toLevel 1 and Fault Diagnosis.

1.3.3 Service and Maintenance Manual

A third manual, the Service and Maintenance Manual containing details of Levels 2 and 3servicing, will be provided for the use of Authorised Personnel only.

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1.3.4 Safety Paragraphs

Throughout the documentation ‘WARNING’, ‘Caution’ and ‘Note’ paragraphs appear. It is theresponsibility and duty of all personnel who operate and maintain this equipment to fullyunderstand the WARNING, Caution and Note procedures in order to reduce or eliminatehazards.

WARNINGWARNING TEXT MUST BE OBSERVED TO PREVENTPERSONAL INJURY TO YOURSELF AND OTHERS.

CautionCaution text must be observed to prevent possible damage ordestruction to equipment or loss of operational effectiveness.

Note: Note text must be observed for essential and effective operating proceduresand conditions.

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1.4 Table of DefinitionsName Definition

Aperture An opening in the protective housing of a Laser enclosure or Laser unitthrough which Laser radiation is emitted.

Assist Gas Gas that is fed to the beam focus at the workpiece to assist the cuttingprocess. See Shielding Gas.

BCD Binary Coded Decimal.

Beam Divergence

Laser beam diameter increases with increasing distance from the Laserowing to beam divergence (i.e. spread). It is expressed as the angle (mrad)the beam diameter increases per unit distance (mm).

Beam divergence can be used to predict the minimum beam diameterachieved by focusing the beam with a lens.

Beam Dump A device used to absorb beam energy when not required.

BET Beam Expanding Telescope.

Beam Focus The location beyond a focusing lens at which the beam diameter reaches aminimum value or focal point.

Beam Tube

A length of metal or PTFE (Teflon) tube located between componentassemblies in the beam path. Prevents human access to the Laser beamand the ingress of dust.The Beam Tube is also known as the Gaiter.

Beam PathLaser light directed to the workstation via a Shutter, Fibre and Focus Head.Lasers fitted with more than one Shutter can timeshare between differentworkstations by selecting a different beam path. See Timesharing.

Beam Stop A device that stops a Laser beam path.

Beam Quality Beam quality is defined using beam radius and half angle divergence andrelates to 86.5% of enclosed power (ISO 11146).

Continuous Wave Laser operating and continuously emitting radiation over periods of timegreater than or equal to 0.25 seconds.

Depth of Focus

When a lens focuses a Laser beam to a small diameter, the Depth ofFocus is that distance along the lens axis over which the beam may still beconsidered focused. Depth of Focus is defined as the axial distance overwhich the beam diameter is no more than 10% larger than the minimumdiameter at the beam focal point.

EyewearPersonal Protective eyewear that prevents Laser radiation reaching theeye directly. Laser safety eyewear reduces the incident light to a safelevel, provided it is used correctly.

Fume Airborne grit, particles, smoke, dust, vapours and gases generated byLaser processing of materials.

GUIGraphical User Interface. The interface between the Operator and theLaser System. The GUI can be either a Personal Computer (PC) or anIndustrial Touch Screen Computer.

IntensityBeam intensity is strictly the power per unit area (Wcm-2) of beam cross-section. (Intensity is also energy density - the energy per unit area of beamcross-section).

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Name Definition

Invisible Light outside the visible wavelength range 400 to 700nm.

Laser Controlled Area A work area controlled and supervised to protect personnel from Laserhazards.

Laser Safety Officer Person knowledgeable in the evaluation and control of Laser hazards andhas responsibility for overseeing control of Laser hazards.

LASER Acronym: Light Amplification by the Stimulated Emission of Radiation.

Laser Resonator

An optical assembly that provides feedback for light emerging from theLaser rod (thus enabling oscillation) and allows extraction of light toprovide the output beam.

The resonator may include additional components to tailor thecharacteristics of the Laser beam - for example, beam divergence,polarisation or monochromaticity.

Light Spectrum

Infrared: Invisible light of longer wavelength than red light(700nm).

Ultraviolet (UV): Invisible light of shorter wavelength than violet light(400nm).

Visible: Visible light in the wavelength range of 400 to 700nm.

Local Control Laser is operated and monitored via the control console (PC or GUI).

LSD Least Significant Digit.

Machine Interface Facility that allows an external controlling device such as a PLC to controland monitor the Laser.

MSD Most Significant Digit.

Nd: YAG

Nd Neodymium:

Doping to provide the 1064nm wavelength of the beam.

YAG Yttrium Aluminium Garnet.

The host crystal contained in the Laser Rod.

Parameter UpdateStrobe The signal that is used to send information into the Laser.

Parameter ChangeAcknowledge The signal that is used to acknowledge receipt of information by the Laser.

Remote Control Laser is operated and monitored via the Machine Interface.

Simmer

Simmer current (or simmer arc) is a current which is arranged to flow in theFlashlamp after the lamp has been triggered (i.e. the impedance of the gasinside the lamp has been broken down).

Simmering a lamp allows a quicker, more efficient response to currentpulses and avoids the need to trigger the lamp before every Laser pulse.

Sinking A term used to describe interface signals where current flows into theSignal Driver in the True state. No current flows in the False state.

Sourcing A term used to describe interface signals where current flows out of theSignal Driver in the True state. No current flows in the False state.

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Name Definition

Spot Size

There are two possible interpretations of this phrase and care must beexercised. Spot size can represent:

The actual diameter of the beam focus at the surface of theworkpiece, based on knowledge of the Laser beam characteristicsand the parameters of the optical focusing system.

The diameter of a spot weld or drilled hole or the width of a seamweld or cut.

Generally, spot size is interpreted according to the first definition.

The Formula for calculating spot size is as follows:

Focussed Spot Diameter =

Fibre diameter x Focal length of Focus Lens

Focal length of Recollimating LensThis assumes aberration free lenses.

Shielding Gas Gas that is fed to the beam focus at the workpiece during welding toexclude atmospheric oxygen. This prevents oxidisation of the weld.

Ready Status of equipment during periods of inactivity.

Timesharing The ability to switch Laser power between different workstations byselecting a different beam path. See Beam Path.

The following convention is used throughout this manual

0 = signal False.

1 = signal True.

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1.5 Customer SupportThe JK501/401 Series Laser is supported by a network of Customer Centres staffed with trainedService Engineers. For customer service requirements, please contact your local CustomerCentre or GSI Lumonics, Rugby, England.

When contacting a Customer Centre, please have the following information at hand:

• The Laser type (JK501/401 Series Laser).

• The Laser serial number.

• Any relevant information (e.g. fault codes and descriptions) that would assist in faultdiagnosis.

1.5.1 Regional Customer Centres

GSI Lumonics can be contacted in the following countries:

Farmington, Michigan, USATel: 1 (248) 4498989Fax: 1 (248) 7352460

Munich, GermanyTel: 49 (89) 31707-0Fax: 49 (89) 31707-250

Rugby, EnglandTel: 44 (0) 1788 570321Fax: 44 (0) 1788 579824

Hong KongTel: (852) 2549 - 8660Fax: (852) 2549 - 5896

GSI Customer Information

Product news and information resources can also be accessed via the GSI Lumonics website atwww.gsilumonics.com

1.6 CE Mark InformationThe JK501/401 Series Laser complies with all CE requirements and relevant European Uniondirectives.

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1.7 The JK501/401 Series LaserThe JK501/401 Series Laser is a continuous wave (CW) Nd: YAG Laser used for welding,cutting and surface treatment.

Typical applications include:

Overlap and butt welds in Steels, coated Steels and Aluminium.

High speed cutting of sheet metal.

Process data and typical parameter settings are included in Section 7.

1.7.1 Main Assemblies

The main assemblies of the JK501/401 Series Laser are:

Laser Head.

The Laser Head, mounted on top of the Laser cabinet, comprises a pumping chamber,with front and rear mirrors. The pumping chamber houses a cylindrical crystalline LaserRod (Nd: YAG) and two gas filled tubes (Flashlamps). This assembly is called theOptical Resonator.

The Optical Resonator converts electrical power into a beam of infrared Laser light,which is focused into a fibre optic cable that exits through the Laser cabinet lid.

Power Supply Unit

The Power Supply Unit (PSU) provides electrical power to the Flashlamps fitted insidethe pumping chambers on the Laser head. The PSU contains the Lamp Driver, Boostand Control Modules that generate and control the high energy levels to the Flashlamps.

Heat Management System

The Heat Management System occupies the right-hand compartment of the Lasercabinet. The Heat Management System combines two forms of cooling:

Water-cooling: This comprises two circuits:

• An internal cooling circuit removes excess heat from critical optical components suchas the Laser Head, Beam Dump and lamp and boost modules.

• An external (factory) chilled water supply passes through a Heat Exchanger wherebyheat contained in the internal cooling circuit is dissipated and exchanged by the User’sfactory water system. This reduces internal water contamination as the two systemsare isolated from each other.

Air-cooling: Fans positioned behind the Main Power Modules circulate air that passes thoughan air cooler underneath the modules in the Central Bay. This airflow controls the ambienttemperature throughout the cabinet.

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Graphical User Interface

There are three options for the Graphical User Interface (GUI):

• A free-standing podium mounted Industrial Touch Screen Computer.

• A 19-inch rack mounted Industrial Touch Screen Computer.

• A remote PC Interface Box with software allowing the customer to set-up his own PC. ACustomer supplied Personal Computer with software, connector and Interface Boxsupplied by GSI Lumonics.

Note: GUI software is supplied on CD-ROM as part of the Hardware Installation.

Fibre Optic Cable Assembly

Fibre-optic beam delivery is achieved by focusing Laser light into a fibre-optic cable. The core ofthe fibre optic cable is 600µm diameter on the JK501 and 400µm diameter on the JK401. Thelight is homogenised as it passes through the cable to the Focus Head.

As light exits from the fibre-optic cable, it expands into the Focus Head. This incorporates a Re-Collimating and Focusing lens assembly.

The Re-Collimating lens re-collimates the expanding beam from the fibre and a Focusing lensfocuses the beam to a small spot on the workpiece surface. Different spot sizes are achievedby changing the combination of Recollimating and Focus lens focal lengths.

The JK501/401 Series Laser can be supplied with up to six output fibres to provide a Timesharefacility. The output beam can be switched between these fibres by demand from a controllingWorkstation.

A Fibre-Optic Continuity Monitoring System (FCMS) monitors the integrity of the fibre cable. Ifany fracture or disconnection occurs in the cable, the FCMS will place the system into shutdownand generate an alarm on the Local or Remote Controller.

1.7.2 Control System and Local Controller

The JK501/401 Series Laser has a unique control system by which 'intelligence' is exchangedbetween functional modules. Each functional module carries intelligence allowing highlyaccurate identification of maintenance requirements. This is termed ‘Distributed Intelligence’.

The JK501/401 Series Laser Local Controller can be either a Personal Computer or anIndustrial Touch Screen Computer. It is referred to as the Graphical User Interface (GUI). TheGUI is used to monitor and control the Laser, program parameters, alert the User to anymaintenance requirements and for fault diagnosis.

1.7.3 Machine Interface

The Machine Interface, PL601, allows total operational integration of the Laser into a productionline or cell. Options include Timeshare, Shutter Control, Power Control, Parameter Selectionand Alarm Reporting.

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1.7.4 Ancillaries

A range of ancillary fittings is available for the JK501/401 Series Laser including a CrossjetNozzle, Cutting Nozzle, CCTV viewing and Auto-Focus Cutting Head.

1.8 Technical SpecificationThis table provides general technical data on the JK501/401 Series Laser including the outputspecification and the services necessary for Laser operation.

Environment

Storage Environment Temperature not to fall below 2°C (35°F) unless thecooler has been drained.

Operating Environment Max temperature: 40°C (104°F)

Min temperature: 5°C (40°F)

Humidity Specification Max humidity: 95% RH at 20°C (68°F)

Max humidity: 50% RH at 40°C (104°F)

These figures indicate the maximum humidity at theupper and typical temperature limits. Refer to Figure 1for humidity figures within the temperature range.

Electrical Supply Requirements

Supply Three-phase, three-wire plus earth (ground).

Line Voltages 380/400/415V at 50Hz

460/480V at 60Hz

Voltage Tolerances ±10%

Supply Rating 21kVA

Maximum Power Consumption 19kW

Note: This equipment is built to operate at 50Hz or 60Hz within the relevant supplyvoltage range. This frequency is not interchangeable because a different CoolerPump motor is used in each case. Consult GSI Lumonics if it is necessary tooperate this equipment on a different supply frequency.

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Cooling Water Supply

A clean water supply is required to the following specification:

Water pH 6.5 to 8.5

Minimum Inlet Temperature 10ºC (50ºF)

Maximum Inlet Temperature 18ºC (64.4ºF)

Maximum Absolute Pressure 7.5 bar (110psi)

Cooling water flow rate is automatically regulated internally according to water inlettemperature and duty of the equipment. This maintains the internal cooling water at thecorrect temperature. Refer to Figure 2.

Equipment Weight And Dimensions

JK501/401

Power Supply Cabinet

Weight 600 kg (1323 lbs.)

Dimensions 1600 mm wide

920 mm deep

1264 mm high

Graphical User Interface

Podium mounted

Weight 85kg (188lbs)

Dimensions 597mm wide

480mm deep

960mm high plus 185mm for the castors

19 inch Rack Mounted

Weight 51.5kg (114lbs)

Dimensions 482mm wide

105mm deep

265mm high

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Output Specification JK401 JK501

Average Laser Power* 400W 500W

Maximum Modulated Power 800W 1000W

Beam Quality 16mm.mrad 25mm.mrad

Rise time

Note: This may not apply for systems soldin some territories.

<2ms

Modulation Frequency 100 - 500Hz

Shutter Response Time <50ms

*Maximum power at workpiece throughout lamp life.

Focus Head

Options Straight or Right Angled

Focal Length of Re-collimating Lens 160, 200mm

Focal Length of Focus Lens 80, 100, 120, 160, 200mm

Fibre Optic Cable

Fibre Diameter 400µm 600µm

Standard Fibre Lengths 5m, 10m, 15m, 30m, 50m

Customer Supplied PC

Operating System: Windows NT

Minimum Hardware Specification: Pentium Processor 450MHz

20Gb Hard Drive

32Mb RAM

Floppy Drive

CD Drive

1 x RS422 Interface Port (optional)

1 x RS232 Interface Port

Modem (requires additional serial port)

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Figure 1 - Temperature /Relative Humidity Graph

401/501 External Water

0

5

10

15

20

25

30

35

40

45

50

5 10 15 20

Water Temperature - Deg C

Flo

w l/

min

0

1

2

3

4

Pre

ssu

re D

rop

Bar

s

Flow

Pressure Drop

Figure 2 - External Water Parameters

%RH

10

25

30

40

50

15

20

35

45

0C

10010 3020 40 50 60 70 80 90

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1.9 Safety Interlocks

1.9.1 Customer Remote Interlocks

A Remote Interlock Connector (RIC) provides connection for customer remote interlocks to theJK501/401 Series Laser.

The interlocks, connected in series, are normally closed. Opening the interlocks cuts the powersupply to the Flashlamp circuits. Manual intervention is then required to re-establish the powersupply (See Section 2.8.1 for more information).

Remote interlock connection is via a 25-way Harting connector, (SK602), located on the left-hand rear panel of the cabinet.

1.9.2 Shutter Interlocks (Beampath Interlocks)

The JK501/401 Series Laser has two independent circuits that control the Shutter:

Process control: Operated from a remote device or Local Controller (PC or GUI)and is used for processing purposes only. This Shutter is softwarecontrolled and must not be relied upon to provide Operator safety.

Safety control: Employs a 24V solenoid mechanism for Shutter operation. Gravityand spring-assisted closing provide Operator safety.

The Shutter is physically located in the optical path.

Shutter interlock connection is via a 72-way Harting connector, (SK604), located on the left-hand rear panel of the cabinet.

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1.10 Laser Power DeliveryLaser output power is delivered, via a fibre optic cable, to the Focus Head at the Workstation forprocessing. Up to six fibre optic cables can be fitted, permitting power to be directed to one ofsix workstations at any one time. This is called Timesharing.

The direction of the beam is controlled using an electro-mechanical Shutter. Each fibre has adedicated Shutter that allows the beam to be switched into that fibre.

Individual Shutters can be controlled via the Machine Interface by selecting the beam path(Shutter, Fibre and Focus Head) into which the Laser beam is to be directed. When the Laser isproducing an output but no beam path is selected, the Laser output is ‘dumped’ into a water-cooled Beam Dump.

Shutters can only be activated when the associated safety circuits are healthy. The majority ofhigh power, continuous wave Nd: YAG applications set the Laser to run at a predeterminedoutput power and use the Shutter to control when and where the Laser processing takes place.

Refer to Figure 3 for details on Shutter timing.

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Figure 3 - Shutter Timing

Name Description Typical Max

TCR Control Response Time 300µs 500µs

TSOTime from Customer Command toShutter Open Acknowledge 50ms -

TSCTime from Customer Command toShutter Closed Acknowledge 50ms -

External Shutter Control

CustomerCommand

ControlDemand

Open SwitchStatus

Acknowledgeto Customer

//

//

//

//

T T

T TT T

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1.11 Operating ParametersLaser processing is controlled by a Parameter Set. A set number identifies each ParameterSet. The following six operating parameters can be changed locally or remotely.

• Laser Output Power (Mean Power).

• Laser Output Power (Peak Power).

• Ramp Up Time.

• Ramp Down Time.

• Modulation Frequency.

• Modulation Depth.

The JK501/401 Series Laser is capable of storing up to 10 active programmable ParameterSets. The active Parameter Set can be selected via either the Local or Remote Controller. Thisallows the correct parameter values for specific processes to be established and programmedinto the Laser.

It is possible to specify a set of operating limits for each set of parameters. Operating limits arethe maximum and minimum power limit and delay times set before the trip is active. The limitsare used to help ensure consistent quality of the parts processed by the Laser by preventingproduction of components at Laser power outside the predetermined limits.

1.11.1 Changing Parameters

Parameters are changed via either the locally or remotely by the following procedure:

1. Select parameter to be changed.

2. Select the value of the parameter.

3. Send information to the Laser.

4. Wait for Laser to acknowledge it has received the information.

Parameters and parameter values are set as binary coded decimal values on either locally orremotely. The signal used to send the information into the Laser is known as ParameterStrobe. The signal used to acknowledge receipt of information by the Laser is known asParameter Acknowledge.

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The following is an example of setting a parameter value.

To set a modulation frequency of 260Hz, the following BCD ‘word’ would be required:

A1 B8 B4 B2 B1 C8 C4 C2 C1

0 0 1 0 1 0 0 1 0

This gives a decimal word of 52, the step resolution for frequency adjustment is 5, thus the setfrequency is 52 x 5 = 260Hz.

BCD data present at the Controller is accepted by the Laser only when the PARAMETERSTROBE input is active. Reading of data is acknowledged by the PARAMETERACKNOWLEDGE output from the Laser which remains active until the PARAMETERSTROBE input is removed.

Figure 4 illustrates the times taken to change the parameters.

Figure 4 - Parameter Timing Diagram

Name Description Min Max

TSD Strobe Delay Time 300µs -TSP Time from Strobe to

Acknowledgement - 2ms

TSM Minimum Strobe Width 1ms -Ti Interval between parameter set - 1ms

ParameterSelection

BCD Data

ParameterStrobe

ParameterAcknowledge

T

TSM

TSD TSD Ti

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1.11.2 Parameter Set Selection

The required parameter set can be selected via either the locally or remotely using the followingprocedure:

1. Select parameter set selection.

2. Select parameter set number.

3. Send information to the Laser.

4. Wait for Laser to acknowledge it has received the information.

1.12 Laser OutputsThe JK501/401 Series Laser has the facility to output the following information via either theLocal or Remote Controller:

Laser Status:

• OFF / Ready/ON.

• Local / Remote control.

Shutter Status:

Open and Closed status of up to 6 Shutters.

Alarm Code:

• Alarm or warning code.

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1.13 Operating GuidelinesTo conserve energy consumption and extend Flashlamp life, it is good practice to switch theLaser to Ready during periods of inactivity (no processing).

The frequency at which the Laser will be switched to Ready depends on the processing beingcarried out and may vary from high (between components) to low (production line maintenanceperiods).

High power continuous wave Nd: YAG Lasers require a short time for the Laser output tobecome usable after a large change in input power to the Flashlamps (e.g. the transition fromREADY to ON). The JK501/401 Series Laser has a rise time of <2ms.

Note: This may not apply for systems sold in some territories.

It is not advisable to switch the Laser to Ready if process time is less than several seconds. Ifthe Laser is operating under this condition, the Laser must remain ON and the process must becontrolled using the Shutter.

The time taken for the Laser output to increase from the Ready level to the target output andvisa versa can be programmed as a Ramp Up and Ramp Down time. This time can be set from0 to 9.99 seconds

1.14 Processing ConsiderationsThis section provides a brief overview of parameter control requirements for processing.

The programmable Ramp Up time is used to initiate a gradual increase in weld penetration.This reduces weld initiation defects.

The programmable Ramp Down time is used to obtain a controlled termination, or ‘Fade Out’, ofa weld process. This reduces weld termination defects. This feature is used particularly onperimeter welds for circular components where the weld overlap is controlled to produce adefect free weld termination.

For applications that require the Laser output to vary from the READY to ON power levels athigh frequency (5 - 500Hz) a ‘Laser ON’ input is used with Ramp Up/Ramp Down times set to 0.

During this process, the Shutter is opened at the start of the process and remains open. TheLaser output is then switched ON and OFF at high speed during the movement of the focusedbeam along the workpiece. The resultant ‘stitch’ weld can prove useful on distortion sensitivecomponents, as the input power to the component is significantly less than a continuous weld.

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1.15 Fibre Optic HandlingThese guidelines must be read before unpacking and handling the Fibre Optics.

CautionSerious damage can be caused if the Fibre Optic cable is handledincorrectly.

1.15.1 Description

All JK Series Lasers are equipped with fibre optic beam delivery. The standard fibre cablelengths are 5m, 10m, 15m, 30m and 50m.

Optimum fibre routing from the Laser to the point where processing is to be carried out isessential if long fibre lifetime is to be achieved. This is particularly important when the fibre isused in conjunction with a Robot.

The fibre optic is a complex component that incorporates optical, electrical and mechanicalparts. Although fibres are designed for use in factory environments, care must be taken duringinstallation and use to ensure optimum performance and acceptable lifetime.

Fibres optic cables are more fragile than electrical cables, although superficially they looksimilar. If fibres are treated and handled as electrical cables, they will fail prematurely. Fibrereplacement can be both time-consuming and expensive.

1.15.2 Unpacking Fibre Optic Cable

Particular care should be taken with regard to possible termination damage when unpackingand uncoiling the fibre as there is a tendency for the coil to spring apart, possibly resulting in theterminations colliding with other objects.

• The cable is very flexible and easily bent when uncoiling. At no time shall the minimumbend radius be exceeded.

• Take care not to twist the cable when uncoiling. Always unravel the cable with afeeding action and compensate for any twist that might occur.

• Do not drop the cable or allow it to impact with surfaces or other objects.

• Never pull on a termination to unravel a fibre.

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1.15.3 Fibre Installation

• Ensure that the bend radius limitations (refer to Section 1.15.5) are observed.

• Avoid sharp or abrasive surfaces.

• When installing the fibre cable, ensure that the orientation key in the fibre terminationand the keyway in the fibre receiver are aligned.

• When fibre cable is run horizontally it is to be supported, or secured, at intervals nogreater than 4m.

• Lengths of fibre cable subject to movement, particularly in robot applications, must becarefully routed and supported to maintain curvature above minimum bend radiusthroughout all motion. Adjustable spring tensioners or the incorporation of a helix in thecable route must accommodate motion without imparting excessive twist or to theconduit.

• Grouping the cable with stiffer service cables/pipes is permissible but the cable mustnot be used as a supporting member for a group of more flexible cables/pipes.

• Fibre termination must not be subjected to forces caused by dropping, impacting orcollision by heavy objects.

• Where the fibre input receiver is inside the Laser enclosure, ensure that there isenough conduit slack between the fibre receiver and the strain relief gland on the Laserlid. Make sure that there is no induced stress on the fibre termination or the inputreceiver.

1.15.4 Recommendation

When processing materials with highly reflective surfaces, such as gold, silver, aluminium andcopper etc, GSI Lumonics recommend that the focus head should be offset from the workpieceby approximately 10 degrees from the perpendicular.

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1.15.5 Minimum Bend Radii

Condition Min Bend Radius

Handling/Momentary 120mm

Manually coiling/uncoiling.

Threading cable through supports or laying in cable supports.

Attaching to permanent stationary fixings.

Static/long Term 180mm

Processes where Focus Head remains stationary.

Final installed location of cable between Laser and work enclosure.

Repetitive Flexing/Dynamic 180mm

Pre- or post-process positioning.

In-process movement of cable.

Multi-axis robot motion of Focus Head.

Single-axis gantry type motion of Focus Head.

Inertial acceleration/decelerations of suspended cable.

Winding/unwinding of residual, suspended coils.

1.15.6 Fibre Optic Termination

Fibre termination is the section of fibre from the beginning of the termination boot to theexposed end of the fibre. This includes all mechanical, electrical and optical parts. No singlepart of the fibre termination is replaceable/repairable outside the manufacturing base.

• Ensure the fibre termination is always kept in a clean environment. If this is notpossible, use the clean termination cover provided.

• During installation of the fibre, ensure that the protective covers are removed onlywhen necessary.

• Keep the fibre termination placed downwards when uncovered and not installed.

• Do not attempt to dismantle the fibre termination.

• Always handle the termination by the boot not the optical termination.

• Care must be taken to prevent damage or contamination of any exposed electricalcontacts.

• The fibre termination must not be subjected to forces caused by dropping, impacting orcollision by heavy objects.

1.15.7 Fibre Routing

In static applications (i.e. fibre and Focus Head do not move), the fibre must not be bent greaterthan the minimum bend radius at any point along the route (refer to Section 1.15.5).

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In dynamic applications (i.e. fibre and Focus Head move), the following points of good practiceshould be adhered to:

• The fibre cable should be held off the floor and routed along a path so that the fibrecable does not bend more than the minimum bend radius at any point along the fibrecable length throughout the production sequence.

• The fibre cable should be supported at points along its length to prevent grossmovements under the action of its own weight during the production sequence.

• At the fibre cable support points, the fibre cable should be held using mechanical partswhich prevent the minimum bend radius being exceeded and which do not result in aradial compressive force on the fibre cable.

• The fibre cable should never be pulled tight at any point along its length during theproduction sequence.

• The external surface of the fibre cable should be prevented from rubbing/abrasion atsupport points or on any other parts in the workstation (e.g. jigs, fixtures, productionparts, workstation walls, floors, robot parts).

• Acceleration and deceleration of the fibre cable and Focus Head should be kept to aminimum consistent with achieving process cycle time.

• At fibre cable installation and periodically during operation (e.g. once per shift), a dryrun of the production sequence should be made. The fibre cable motion should bechecked to ensure that the fibre routing still complies with the points of good practiceabove.

1.15.8 Fibre Removal

When removing the fibre termination from the fibre receiver (input or output), hold thetermination and ease the fibre free. Never jerk the fibre free.

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2. Safety

2.1 Laser ClassificationLaser classification indicates the potential hazard presented to the User. There are twostandards used to define Laser Products: Throughout the World, with the exception of NorthAmerica, regulation IEC 60825-1 (EN 60825-1 in Europe) is used.

This regulation defines Laser Products as Class 1 to Class 4.

The classifications and risks for IEC60825-1 are defined in the following table.

Class Risk Description

Class 1

No risk toeyes.No risk toskin

Class 1 Laser Products are defined as safe in normal operations underreasonably foreseeable conditions, including direct viewing of the laser beamwith optics that could concentrate the laser output into the eye. In addition tosome intrinsically low power lasers products, Class 1 Laser Products alsoincludes embedded products that totally enclose a higher Class of laser e.g. CDplayers, laser printers and most industrial laser processing machines.

Class 1M

Low risk toeyes.No risk toskin.

Class 1M Laser Products are defined as safe in normal operations underreasonably foreseeable conditions, including direct viewing of the laser beam,providing the user does not employ optics that could concentrate the laseroutput into the eye. Unsafe conditions include use of a telescope or binocularswith a 1M laser emitting a well-collimated laser beam or use of an eye loupe ormagnifier with a high divergence 1M source.

Class 2

Low risk toeyes.No risk toskin

Class 2 Laser Products are those emitting visible light for which the naturalaversion response to bright light (including the blink reflex) prevents retinalinjury. This includes direct viewing of the laser beam with optics that couldconcentrate the laser output into the eye. These lasers do present a dazzlehazard and appear uncomfortably bright when viewed directly but should notcause harm if viewed for less than 0.25 seconds.

Class 2M

Low risk toeyes.No risk toskin

Class 2M Laser Products are those emitting visible light for which the naturalaversion response to bright light (including the blink reflex) prevents retinalinjury. However, as with Class 1M Laser Products, only provided the user doesnot employ optics that could concentrate the laser output into the eye.

Class 3R

Low risk toeyes.Low risk toskin

Class 3R Laser Products are those in which the output is up to a factor of fiveover the maximum allowed for Class 1 or Class 2. Because of inherent safetyfactors in the limits for these classes, the risk of injury for direct viewing of aClass 3R laser beam remains low, but greater precautions should be takenwhen using these lasers to prevent direct eye exposure, especially for invisibleClass 3R lasers.

Class 3B

Mediumrisk toeyes.Low risk toskin

Class 3B Laser Products are those to which direct exposure of the eye ishazardous, even considering aversion responses. Scattered laser light isusually safe, for example diffuse reflections from a matt surface. However,viewing of specular reflections can be hazardous, e.g. from a mirror surface.The higher power Class 3B lasers are also a skin hazard, but the naturalaversion response to localised heating generally prevents a skin burn.

Class 4

High risk toeyes.High risk toskin

Class 4 Laser Products are those to which direct exposure of the eye and skinis hazardous and scattered laser light may be hazardous to the eyes. Suchlasers are also a fire hazard and their use requires extreme caution.

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The JK501/401 Series Laser is a Class 4 Laser System. All operators using this Laserequipment must be officially trained and authorised.

In North America, the Center for Devices and Radiological Health, a division of the FDA,regulates the classification of Laser Products and uses Federal Regulation 21 CFRChapter J 1040.10.

This regulation defines Laser Products as Class I to Class IV.

The classifications and risks for 21 CFR Chapter J 1040.10 are defined in the following table.

Class Risk Description

Class I

No risk toeyes.No risk toskin

Class I Laser Products are considered to be incapable of producingdamaging radiation levels and are determined to be eye safe. TheseLasers are exempt from most control measures. Class I Laser Productsalso include embedded products that totally enclose a higher Class ofLaser e.g. CD players, laser printers and most industrial laser processingmachines.

Class IIa

Low riskto eyes.No risk toskin

Class IIa Laser Products are those emitting visible light for which thenatural aversion response to bright light (including the blink reflex)prevents retinal injury. These lasers are not intended for viewing but arenot hazardous if viewed for less than 1000 seconds. An example is aSupermarket Bar Code Scanner.

Class II

Low riskto eyes.No risk toskin

Output Power less than 1mW.

Class II Laser Products are those emitting visible light for which thenatural aversion response to bright light (including the blink reflex)prevents retinal injury. This includes direct viewing of the laser beam withoptics that could concentrate the laser output into the eye. These lasersdo present a dazzle hazard and appear uncomfortably bright when vieweddirectly but should not cause harm if viewed for less than 0.25 seconds.

Class IIIa

Low riskto eyes.Low riskto skin

Output Power up to 5mW.

The risk of injury for direct viewing of a Class IIIa laser beam remains lowunless viewed with optics that could concentrate the laser output into theeye.

Class IIIb

Mediumrisk toeyes.Low riskto skin

Output Power 5mW to 500mW.

Direct exposure of the eye to the laser beam is hazardous. Scatteredlaser light is usually safe, for example diffuse reflections from a mattsurface. However, viewing of specular reflections can be hazardous, e.g.from a mirror surface. The higher power Class IIIb lasers are also a skinhazard. The Class IIIb laser is not normally a fire hazard.

Class IV

High riskto eyes.High riskto skin

Output Power exceeds 500mW.

Class IV Laser Products are those to which direct exposure of the eye andskin is hazardous and scattered laser light may be hazardous to the eyes.Such lasers are also a fire hazard and their use requires extreme caution.

The JK501/401 Series Laser is a Class IV Laser System. All operators using thisLaser equipment must be officially trained and authorised.

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2.2 Laser Radiation HazardsThe JK501/401 Series Laser is a Nd: YAG Laser. This Laser produces radiation with a1064nm wavelength, powerful enough to melt and vaporise most materials. Even diffusereflections can inflict serious injury if allowed to strike the body.

Effects on Body Tissue

Laser radiation is concentrated energy. If it strikes the body, most of the energy will betransferred to body tissue. Tissues will show burn damage that will spread depending on theirradiated area and duration of exposure.

High power exposure may cause the absorbing body tissue to explode and vaporise.Displacement of absorbing tissue may result in shear damage to adjacent tissue.

Effects on the Eye

Nd: YAG light presents a hazard to the eye because the light can damage retinal tissue.Exposure to moderate levels of Laser light can cause burns, which may be permanent. Nd:YAG light is invisible and personnel will be unaware of the risk of exposure.

Indirect Exposure

Control measures reduce the risk of direct beam exposure. However, there is also a risk ofindirect exposure to radiation re-directed by components located in the beam path.

Reflective components present the greatest risk, since virtually 100% of the beam power canbe redirected. The level of risk depends on the direction of the reflected beam relative to thepersonnel. A Class 4(IV) Laser beam can be reflected from non-reflective surfaces.

Exposure can be minimised by tilting of components in the beam path and/or appropriatepositioning of personnel with respect to the reflected radiation.

The risk of indirect exposure can be minimised by the following precautions:

• Ensure no unintended/unnecessary components are in the Laser beam path.

• Ensure all optical components in the beam path are maintained in good condition(clean and undamaged).

• Ensure all necessary components in the beam path re-direct the lowest possibleamount of light.

• Ensure all components in the beam path are securely mounted to avoid unexpectedchanges in component position/tilt.

• Ensure that components and personnel are positioned to reduce exposure ofpersonnel to re-directed radiation.

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2.3 Control MeasuresThe risk of personal injury can be minimised by the following measures:

• Never direct the Laser beam at other people.

• Never direct the Laser beam upwards. If possible, direct the Laser beam downtowards the floor.

• Avoid mounting the Laser or any part of the beam path at eye level. If possiblealways arrange horizontal beam paths well above or below eye level.

• Always use a Beam Stop behind the target/work piece.

Precautions must be taken to prevent unauthorised personnel from entering the equipmentwork area when the Laser is operating.

Warning notices must be displayed to inform personnel of hazards.

Access must be restricted to only those personnel who need to be present.

Control measures reduce the risk of injury to personnel but are not adequate on their own.

The safest mode of operation is to use a Class 1(I) enclosure in conjunction with the Laser.This establishes a physical barrier to prevent access and indirect exposure to the Laserbeam/radiation. This method of operation is preferred by Safety Authorities and isrecommended by GSI Lumonics for use with the JK501/401 Series Laser.

If a Class 1(I) enclosure is not employed and the Laser operates under Class 4(IV)conditions then additional precautions are required. Approved Laser safety goggles must beused at all times by all personnel in sight of the Laser. Laser safety goggles must be suitablefor use with high power Lasers of 1064nm wavelength. It must be remembered that radiationfrom the JK501/401 Series Laser is invisible.

Note: Administrative procedures must be introduced to enforce the aboverequirement on use of protection. In Europe, Laser safety goggles mustcomply with EN 207 and EN 208.

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2.4 Electrical SafetyThe JK501/401 Series Laser power supply output can reach potentially lethal high voltagelevels. Servicing of the power supply must be carried out by certified personnel only.Observe all precautions complying with accepted working codes of practice in the servicingof electrical equipment at all times.

Additionally, the following precautions must be observed:

• Where it is necessary to raise the Laser head lid with the power supply switched on(for setting-up or servicing procedures, e.g. fibre-optic alignment, rear mirroradjustment, etc.), extreme care must be taken when working on the equipment.

• Do not open cabinet doors while the supply isolator is closed.

• A two minute period must be allowed after isolation of the power supply beforeopening the cabinet doors, removing covers or raising the Laser head lid. This delaypermits the high voltage capacitors in the equipment to fully discharge.

Additional information and advice on the safe electrical practices associated with theJK501/401 Series Laser is given below:

• All personnel working with the JK501/401 Series Laser must be fully aware of thedangers of misuse of high voltage equipment and be familiar with its safe workingpractices.

• Before using this equipment, operators must be familiar with the operatinginstructions provided in the User Manual. If any uncertainty arises, seek advicefrom the Appointed Engineer or directly from GSI Lumonics.

Service Engineers must comply with all Local Safety Precautions and follow the advice givenbelow:

• Do not permit inexperienced personnel access to the Laser electrical circuits.

• Always ensure that cables and terminal connections are positioned to preventarcing between components.

• Do not assume polarities of cabling or components, refer to available circuitdiagrams or contact GSI Lumonics.

• Do not attempt to carry out work on electrical circuits when alone. Always have acolleague nearby.

• Use only GSI Lumonics approved spare parts.

• Always adhere to Local Plant Regulations relating to work on electrical equipment.

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2.5 Environmental HazardsMaterials used in Laser processing applications can become hazardous if safe workingpractices are not followed. Hazards can result from the following:

• Fire.

• Fume.

• Compressed Gases.

• Solvents.

2.5.1 Fire

Particular care is necessary when processing combustible materials.

The use of oxygen as an assist gas on combustible materials can exacerbate a fire hazard.Combustible materials include plastics, waxes, and some metals. Compressed gases andsolvents used for equipment maintenance also increase the risk of Laser-initiated fires.

Do not attempt to process reactive metals such as titanium and magnesium using oxygen asan assist gas. Such materials must be processed using inert gases only (e.g. nitrogen,argon, etc). Always consult the material manufacturer safety information before commencingprocessing.

To test for the potential reaction of a metal in the presence of oxygen, use the followingprocedure:

1. Use a sample piece of the metal on which to test.

2. Ensure that the gas line is fitted with a flashback arrestor.

3. Ensure a colleague is present to turn off the Laser in the event of fire.

4. Ensure a second colleague is present with a suitable fire extinguisher.

5. Operate the Laser to safe test the metal.

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2.5.2 Fume

Fume and fine particulate can be generated during processing. Fume can include metallicparticles, dust, chemical and gaseous vapours. Such materials must always be regarded asa potential health and safety hazard. Ensure measures are taken to prevent inhalation.

Always consult the following regulations/recommended practices:

• Health and Safety Regulations.

• Local and Plant Regulations.

• Material Manufacturers‘ Safety Recommendations.

The following guidelines will reduce or eliminate fume hazards:

• Containment of processing by-products in a safety enclosure.

• Evacuation of the processing by-products and assist gases.

An exhaust appliance must be provided because, when assist gases are used inLaser processing, the local oxygen concentration may significantly increase fromthe normal value by 20% by volume. The exhaust appliance must be positioned asnear as possible to the point of origin to prevent processing fumes contaminatingthe air of the workroom.

Care is needed in the choice of evacuation equipment to avoid re-circulation of fineparticulate around the building. Simple filtering systems are unlikely to removeharmful vapours and gases.

Ensure that the venting of fume outside the building complies with Local StatutoryRequirements. Particular care is needed in the siting of the exit vent, to ensureadequate atmospheric dilution has occurred prior to personnel exposure. The ventmust be located away from personnel access, preferably at roof level.

• Use of Personal Protection Clothing (PPC).

Personal Protective clothing must be supplied and worn. However, this is a lastresort precaution and PPC should not be used as the primary safety precaution.

Guidance on welding fume and its removal can be obtained by contacting:

The Welding Institute,Abington Hall, Abington,Cambridge CB1 6AL, England.

General guidance can also be obtained from GSI Lumonics.

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2.5.3 Compressed Gases

Statutory requirements relating to the storage, use and transport of compressed gases mustbe followed, in particular the handling of gas cylinders.

Do not use grease on components that are exposed to oxygen. This increases risk ofexplosion.

All high-pressure gas lines must be constructed to a high standard using high integritycomponents. Flashback arrestors must be used in oxygen lines.

Strictly adhere to Manufacturers’ Safety Recommendations and Procedures.

2.5.4 Solvents

Solvents are used for the maintenance of equipment. Solvents are hazardous to health ifadequate precautions for use and storage are not taken.

GSI Lumonics recommend that only PROPAN-2-OL (IPA) is used for cleaning optics. IPA isalso identified as ISOPROPANOL or ISOPROPYL ALCOHOL.

WARNINGPROPAN-2-OL (IPA) IS FLAMMABLE AND TOXIC TO EYES,SKIN AND RESPIRATORY TRACT.

SKIN/EYE PROTECTION MUST BE USED.

AVOID REPEATED PROLONGED CONTACT.

USE ONLY IN WELL VENTILATED AREAS.

KEEP AWAY FROM OPEN FLAME OR OTHER SOURCES OFIGNITION.

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2.6 Conditions of UseThe JK501/401 Series Laser must only be used under the following circumstances:

• On approved materials.

• Using an approved process.

• Under approved conditions.

• With due and proper authorisation.

WARNINGUSE OF CONTROLS, ADJUSTMENTS OF PERFORMANCEOR PROCEDURES OTHER THAN THOSE SPECIFIED MAYRESULT IN EXPOSURE TO HAZARDOUS RADIATION.

2.6.1 Approved Materials

Approved materials can be processed without hazard to personnel or damage to the Laserproduct. These materials have been assessed for their toxicity and fire potential. Approvedmaterials have an approved process method and recommended arrangements for fumecontainment and removal.

2.6.2 Approved Process

An approved process does not present a hazard to the health of personnel or possibledamage to the Laser equipment. The approved process has recommended arrangementsfor processing by-products and fume containment and removal.

2.6.3 Approved Conditions

Approved conditions satisfy the requirements of applicable safety standards and statutoryrequirements relating to electrical, Laser radiation and health hazards. Approved conditionsmeet the requirements of the Plant Safety Officer and the Local Safety Inspectorate.

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2.6.4 Due Authorisation

Due authorisation is the proposed arrangements, reviewed and approved by the followingmembers of the User’s organisation:

• A competent authorised person having a professional qualification in an appropriatetechnical discipline (’Technical Referee’).

• The Supervisor of the Technical Referee.

• The Plant Safety Officer or an authorised GSI Lumonics engineer.

WARNINGEXPOSURE OF THE HUMAN BODY TO LASER RADIATIONIS EXTREMELY DANGEROUS.

Practices that may result in accidental bodily exposure, e.g. holding work pieces by hand,must be avoided.

Do not attempt to process parts with personnel inside the safety enclosure.

Safety equipment must be complete, intact and free from damage.

Parts must only be processed in strict conformity with GSI Lumonics Instruction Manuals,Local Safety Regulations and using established good working practices for Laserprocessing.

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2.7 Safety Control System

2.7.1 Safety Category

A Laser Safety Officer must be appointed to specify the level of safety precautions andcontrol to be implemented during normal operating and maintenance work.

At all times a Laser must be operating in a controlled area, appropriate to the level of hazardit represents.

Note: If a Class 1 enclosure is breached for servicing or maintenance work, andthe Laser is in a Class 4 environment, appropriate controls must bespecified.

2.7.2 Safety Compliance

The following standards apply to Laser safety:

Worldwide: IEC 60825-1: 2001

Europe: EN 60825-1: 2001

North America: FDA Regulation 21 CFR Chapter J 1040.10.

2.7.3 Safety Labelling

Safety labels are fitted to the equipment in compliance with IEC regulations.

Before operating on any part of the Laser system, the hazard level must be checked byexamining the following labels:

• Safety and Compliance labels - refer to Drawing EE11489DD (see Figure 5).

• Label Locations - refer to Drawing EE11489DD (see Figure 6).

The following Class 4 (IV) information appears on label EE113001C (Label A on DrawingEE11489DD (see Figure 5)).

MAXIMUM OUTPUT: 1kW/5mW

PULSE DURATION: CW

WAVELENGTH: 1064/635nm

This information is supplied for safety purposes only and serves principally to assist in theselection of suitable protective eyewear and guarding, including integral viewing panels.These values reflect an appropriate safety margin.

Labels must not be defaced or removed. Damaged or missing labels must be replacedimmediately by contacting GSI Lumonics quoting the label identification reference given oneach label.

Customers must ensure any component fitted has the correct labelling (refer to GSILumonics).

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Figure 5 – Safety and Compliance Labels

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2.8 Safety FeaturesTwo safety features of the JK501/401 Series Laser which protect personnel from exposure toLaser radiation are:

• Remote Interlock Connector.

• Workstation Interlock.

2.8.1 Remote Interlock Connector

The Remote Interlock Connector enables an external Remote Safety Interlock to be fitted to theinterlock circuit of the Laser. The Remote Interlock Connector is a requirement of the twoprincipal Laser radiation standards:

Worldwide IEC 60825-1 (Europe EN 60825-1).

North America FDA Regulation 21 CFR Chapter J 1040.10.

When the terminals of the RIC are open circuit, exposure to Laser radiation is prevented. Thisis caused by either the RIC plug being removed or the terminals of a Safety Interlock Switchconnected to the plug being open circuit.

In these circumstances, the interlock chain is broken, causing the Flashlamp power circuits tobe de-energised and the Shutter closed.

Restoring electrical continuity at the RIC will not restart the Laser. To restart, a normal LaserStart-Up Sequence has to be followed.

This facility is equivalent to a remote emergency stop control. It must not be used for plannedshutdown of the Laser.

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2.8.2 Workstation Interlock

Where safety interlock switches are operated frequently, a RIC is not suitable. In thesecircumstances, workstation interlocks are used.

If the terminals of the workstation interlock are open-circuit (not electrically joined) then theLaser Shutter closes, preventing the Laser beam from emitting from the Laser.

To enable Laser output, the terminals of the workstation interlock must be electrically joined,either by fitting a short-circuit link within the Shutter interlock plug or by connecting a safetyinterlock switch to the Shutter interlock plug.

WARNINGNO-ONE MUST ENTER AN AREA WHERE EXPOSURE TOHARMFUL LEVELS OF RADIATION IS POSSIBLE.

DO NOT CLOSE THE SHUTTER BY MEANS OF THESHUTTER CLOSE COMMAND OR FROM A REMOTECONTROLLER AS A MEANS OF PREVENTING EXPOSURETO LASER RADIATION.

IF A SHUTTER INTERLOCK PLUG IS FITTED WITH ASHORT-CIRCUITING LINK, THE PLUG MUST BEWITHDRAWN FROM THE SOCKET BEFORE ENTERING ANAREA WHERE LASER RADIATION IS LIKELY TO EXCEEDTHE CLASS 1 (I) LIMIT.

IF THE LASER BEAM TERMINATES IN A CLASS 1 (I) WORKENCLOSURE, THE ACCESS DOORS MUST BE PROTECTEDBY SAFETY INTERLOCK SHUTTER SWITCHESCONNECTED TO THE SHUTTER INTERLOCK SOCKET.

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2.9 TrainingOperation of a Class 4 (IV) Laser system can represent a hazard not only to the User but also topersonnel considerable distances from the system.

Persons in control of a Class 4 (IV) Laser system are required to have successfully completedtraining in the following areas:

• System operating procedures.

• The proper use of hazard control procedures, warning signs etc.

• The need for personal protection.

• Accident reporting procedures.

• The effects of the Laser upon the eye and skin.

2.10 Personal Protective Equipment

Eye Protection

Eye protection designed to provide adequate protection against specific Laser radiation, mustbe used in all hazard areas where Class 3B or Class 4 Lasers are in use.

The eye protection (goggles) is designed to protect the wearer against low level scattered light.Eye protection cannot withstand direct beam exposure. Eye protection must be in goodcondition, fit properly and be inspected regularly. Always dispose of damaged eye protection.

Protective eyewear must conform to the following standards:

Europe: EN 207 and EN208

2.11 Manual Handling

Manual Handling Requirements

Manual handling procedures must be observed and carried out in compliance with local factoryregulations.

An assessment must be carried in order to carry out the following:

• Moving/positioning the cabinet without the use of lifting aids.

• Removal of component parts.

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3. Laser Operation

3.1 OverviewLaser operation consists of the following procedures:

• Start up.

• Shutdown.

• Emergency Shutdown.

• Monitoring and Control.

The Laser is mechanically switched on and off by the mains disconnect switch located at the topright-hand corner of the Cabinet.

3.2 Laser Start-up1 Ensure external water supply is ON.

2 Ensure external power supplies are available and switched on.

3 Set MAINS DISCONNECT Switch to ON.

4 Verify white POWER ON lamp is lit.

5 Ensure that the Key Switch is set to On (I) on the podium or remote PC box.

6 Ensure GUI is on. Reset any Alarm messages.

7 Select the green READY button (I) until the amber EMISSION lamps stop flashing.The system will commence the start-up sequence and the green READY button willflash.

8 The green READY button will stop flashing and turn black (II). The Laser is now inREADY mode.

3.3 Laser Shut-downThis is the normal method of switching the Laser System off. Under normal conditions, theLaser System must NOT be switched off by turning the MAINS DISCONNECT SWITCH to OFFor by using the EMERGENCY STOP button.

1 At the GUI, verify Laser Status icon indicates READY. If not, select the LaserREADY/ON button. Ensure Laser Status icon indicates READY (II).

2 Select the red POWER OFF button (O).

3 Laser is now OFF. The Coolant Pump will continue to run for 10 seconds to allowcooling after Laser operation.

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4 When Coolant Pump stops running, set MAINS DISCONNECT switch to OFF.

5 Switch OFF the main power supply.

6 Turn OFF the external water supply.

3.4 Emergency ShutdownThe Emergency Stop procedure must only be used if external conditions deem it necessary. Itmust not be used as a shutdown method in normal conditions. Emergency Stop Buttons arelocated on the Control Panel and on the Podium/ PC box.

1 Press the closest red EMERGENCY STOP button.

2 At the Control Panel, set the MAINS DISCONNECT switch to OFF.

3 Switch OFF the external Power Supply Isolator.

4 Switch OFF the external water supply.

5 Follow all Local Emergency Procedures.

3.5 Alarm HandlingAn alarm will be generated if a fault occurs. This will be indicated to the User in the followingmanner:

The red Fault Indicator Lamp on the Control Panel will flash.

The border of the relevant icon on the screen will flash red.

A message will appear in the Alarm Banner.

Refer to Section 4 for details of the alarm messages and fault diagnosis. When the fault hasbeen cleared, selecting the RESET button will clear the Alarm Message

If more than one alarm message exists, the Alarm Banner will display the next highest priorityalarm message.

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3.6 Monitoring and ControlLocal monitoring and control of the Laser is via a Graphical User Interface which can be either aPersonal Computer (PC) or an Industrial Touch Screen Computer (TSC). If a PC is used, themenus are accessed by placing the cursor on the appropriate icon and clicking the mousebutton. If a TSC is used, the menus are accessed by touching the appropriate icon on thescreen.

Parameter settings can be entered by pressing the keys on the PC keyboard, clicking on the PCdisplay or touching the TSC screen.

Throughout this manual, the term ‘select’ is used to denote the pressing, clicking or touching theicons and keys of the PC or TSC.

There are four levels of User access. These are defined as follows:

Level 0 Operator – Monitoring only.

Level 1 Operator – Level 0 plus Laser Switch READY/ON.

Level 2 Supervisor – Level 1 plus control.

Level 3 Maintenance – Level 2 plus configuration and fault diagnosis.

All levels are password protected.

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3.7 Generic Laser Interface Program

3.7.1 Product Registration Screen

The Product Registration screen will be displayed on boot up if the Product has not beenregistered. The User must enter a sixteen character Product Activation Code (supplied by GSILumonics) to access the Generic Laser Interface program. If no code is entered, the displaydefaults to the Simulation program.

If the Generic Laser Interface program is to be loaded onto another computer, please contactGSI Lumonics for a new Product Activation code.

Icon Description

Select to enter Activation Code on keypad that appears on the screen.

Select to proceed with program when code has been accepted.

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3.7.2 Screen Display

The screen is divided into five areas. Areas 1, 2, and 4 are displayed on all screen views. Areas3 and 5 change according to the User access level and display selected.

Area 5

Area 4

Area 3

Area 2

Area 1

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Area 1

Icon Description

Data Display

These three icons display the status or value of a selectedparameter.

Parameters to be displayed are selected in Level 3Configuration Settings, refer to Section 3.7.5.3.

Double selecting a Data Display icon will place thestatus/value of that parameter into Area 5 at an enlargedsize.

Double selecting one of the other Data Display icons willreplace the enlarged display without exiting the screen.

Select to exit the enlarged display screen.

Area 2

Icon Description

Laser Status

This icon displays the status of the Laser.

It can be either CHECKING, READY, ON or OFF.

READY/ON

Select this button to toggle the Laser between ON andREADY when the Laser is in READY/ON mode.

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Area 3

Icon Description

Keyswitch

This icon allows access to the application program. It alsoindicates the access level of the User.

Grey Level 0

Blue Level 1

Yellow Level 2

Red Level 3

Select this icon to display the LOGON screen, refer toSection 3.7.3.1.

Help

Select this icon to display the HELP screen, refer to Section3.7.4.10.

Exit

Select this icon to exit the program. When in Level 0, 1 and 2access, a Windows® Shutdown will occur. When in Level 3access, the GUI will remain in Windows®.

Additional icons will be displayed in this area appropriate to the access level of the User. Theseare described in the relevant section of this Manual.

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Area 4

Icon Description

Alarm Banner

This displays Alarm messages.

Message Banner

This displays text messages to inform the User ofthe current activity.

RESET

Select this button to reset the Alarm messagebanner. Alarms messages can be reset only whenthe fault has been cleared, refer to Section 4.

Area 5

Icon Description

Overview

This area displays the details of the selected view.The default view is the Overview screen, refer toSection 3.7.3.

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Information Windows

Throughout the program, some actions may cause a warning or information window similar tothe one above to appear.

Select the appropriate button to respond to the text displayed.

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3.7.3 Overview Screen

The Overview screen displays a set of icons that represent the component systems of theLaser. If an alarm occurs, the periphery of the appropriate icon will flash in red.

The screen display will default to the last active User Level (see caution below). Selecting anicon will display further screens that allow the Operator to monitor and control the Laser. Theseare explained in Level 1 Operator Access in Section 3.7.4.

CAUTION

The default User Access Level on the initial run of the Generic LaserInterface program will be Level 0. However, on subsequent runs it willdefault to the access level of the last User.

It is imperative that Level 2 and Level 3 Users change the access to asafe level before they log off.

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3.7.3.1 Logon Screen

Select the Keyswitch icon. This will display the Logon screen.

The Logon screen allows the User password to be entered using either the PC keyboard orselecting the display keyboard on the screen.

Enter User password.

Select ↵

If the password is accepted, the display reverts to the Overview screen with the Keyswitch iconin the appropriate access level colour.

If the password is not accepted, the display will remain in the Logon screen and await entry ofthe correct password.

To exit the Logon screen without entering a password:

Select the Esc key.

The display will return to the Overview screen at the original User access level.

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3.7.4 Level 1 Operator Access

Select the Keyswitch icon. Logon as a Level 1 User (refer to Section 3.7.3.1). The Keyswitch onthe Overview screen will be blue.

3.7.4.1 Parameter Set Screen

Select the Process Tab in the Overview screen to display the Active Parameter Set screen.

The Active Parameter Set screen displays the active Parameter Set values. It also provides adynamic display of selected monitor points.

Select the Laser Tab whilst in the Parameter Set screen to revert to the Overview screen.

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3.7.4.2 Laser Head/Shutter Screen

Select the Laser Head/Shutter icon in the Overview screen to display the Laser Head screen.Up to six fibres can be fitted, only two shown.

The Laser Head screen displays a schematic of the Laser Rail and Optical components.

Icon Description

Select the INFORMATION button to display the Laser Head data log showing thenumber of Shutter operations, the elapsed hours of the lamps and any errors thathave been logged, refer to 3.7.4.2.1.

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3.7.4.2.1 Laser Head/Shutter Data Log Screen

Icon Description

Select the COG button to revert to the Laser Head screen.

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3.7.4.3 Machine Interface Screen

Select the Machine Interface icon in the Overview screen to display the Machine Interfacescreen.

The Machine Interface screen displays the status of the selected Laser parameter inputs andoutputs.

Icon Description

Select the INFORMATION button to display the Machine Interface data logshowing the Run Time hours and any errors that have been logged, refer toSection 3.7.4.3.1.

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3.7.4.3.1 Machine Interface Data Log Screen

Icon Description

Select the COG button to revert to the Machine Interface screen.

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3.7.4.4 Air Cooler Screen

Select the Air Cooler icon in the Overview screen to display the Air Cooler Module screen.

The Air Cooler screen displays an animated schematic of the Laser Air Cooling system.

Icon Description

Select the INFORMATION button to display the Air Cooler Module data log showingthe Run Time hours and any errors that have been logged, refer to 3.7.4.4.1.

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3.7.4.4.1 Air Cooler Data Log Screen

Icon Description

Select the COG button to revert to the Air Cooler Module screen.

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3.7.4.5 Power Distribution

The Power Distribution icon is for future use.

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For future use. This page will contain details of the Power Distribution Screen.

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3.7.4.6 Interlocks Screen

Select the Interlocks icon in the Overview screen to display the Interlocks screen.

The Interlocks screen displays the status of Laser Interlock Chain and the I/O cards.

Icon Description

Select the I/O button to toggle the display to the I/O screen.

Select the chain button to toggle the display to the Interlock Chain screen.

Select the INFORMATION button to display the Interlocks data log showing the RunTime hours and any errors that have been logged, refer to Section 3.7.4.6.1.

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3.7.4.6.1 Interlocks Data Log Screen

Icon Description

Select the COG button to revert to the Interlocks Chain screen.

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3.7.4.7 Lamp Screens

Select the Lamp icon in the Overview screen to display the Lamp Module screen.

The Lamp Module screens display a schematic of the Lamp Module. It indicates the status ofthe Temperature switch, the status and value of the DC Link and the values of DemandedPower and Actual Power. When the Laser is in READY, the DC Link is shown open circuit andwhen the Laser is ON the DC Link is shown closed circuit.

Icon Description

Select the INFORMATION button to display the Lamp Module data log showing theLamp ON hours, Run Time hours and any errors that have been logged, refer toSection 3.7.4.7.1.

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3.7.4.7.1 Lamp Modules Data Log Screen

Icon Description

Select the COG button to revert to the Lamp Module screen.

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3.7.4.8 Boost Modules

Select the Boost icon in the Overview screen to display the Boost Module screen.

The Boost Module screens show a schematic display of the Boost Module.

It indicates the status of the Temperature switch, the status and value of the DC Link and thevalue of Demanded Current. When the Laser is in READY, the DC Link is shown closed circuitand when the Laser is ON the DC Link is shown open circuit.

Icon Description

Select the INFORMATION button to display the Boost Module data log showingthe Run Time hours and any errors that have been logged, refer to Section3.7.4.8.1.

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3.7.4.8.1 Boost Modules Data Log Screen

Icon Description

Select the COG button to revert to the Boost Module screen.

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3.7.4.9 Water Cooler Screen

Select the Water Cooler icon in the Overview screen to display the Water Cooler screen.

The Water Cooler Module screen shows an animated schematic display of the Water Coolingsystem. It indicates the ’% open’ of the Valve and the status of the water level. It also indicatesthe status and value of the water conductivity, temperature and flow.

Icon Description

Select the INFORMATION button to display the Water Cooler Module data logshowing the Run Time hours and any errors that have been logged, refer to Section3.7.4.9.1.

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3.7.4.9.1 Water Cooler Module Data Log Screen

Icon Description

Select the COG button to revert to the Water Cooler Module screen.

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3.7.4.10 Help Screen

The Help screen contains tabbed displays that provide information on Safety, Alarms, Warningsand details from the Product Manuals.

Select the tab to display the required screen.

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3.7.5 Level 2 Supervisor Access

Log on (refer to Section 3.7.3.1) at Level 2 to display the Level 2 Overview screen.

The Level 2 Overview screen contains all the icons and functions of Level 1 with the addition ofthe Process icon. The keyswitch will be yellow.

Icon Description

Select the PROCESS button to display the Process screen, refer to Section 3.7.5.1.

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3.7.5.1 Process Screen

This screen allows the User to select the Parameter Set, Shutter Mode, Control Mode, open andclose the Shutter and set the Pointing Diode ON or OFF (if fitted).

When the Operator tab is selected, the User can also reset the parameter values within theselected set.

When the Settings tab is selected, the User can monitor the Lamps, The Water Flow and theCooler. The Trip levels can also be set in this screen.

Parameters settings and control operations are only available when the Laser system is inLOCAL mode.

Icon Description

Select the GRAPH button to view the Laser Power graph, refer to Section3.7.5.1.6. This screen is available only if SPC has been selected, refer to Section3.7.5.3.1.

Process view, this icon is available when Process Vision in the Settings/Generalscreen is ticked. This is for future use.

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3.7.5.1.1 Parameter Selection

Parameters selections are only available when the Laser system is in LOCAL mode.

Select the OPERATOR Tab. The following parameters can be set.

Parameter Range Description

Param Set 1 - 10 Select the active Parameter Set by selecting either thename or the value and using the display keypad.

Enter the Parameter Set number by either using the + or– keys to increment/decrement the number value orselect the relevant number keys and then select ENT.The PC keyboard can also be used.

When a Parameter Set is selected, the parameter valueswill appear in the appropriate boxes.

If a parameter requires modification, the new parametervalue are entered and the Parameter Set saved eitheras a modified version of the original using the SAVEbutton or as a new Parameter Set using the SAVE ASbutton.

The new Parameter Set can then be loaded by selectingthe LOAD button.

Up to ten Parameter Sets can be stored.

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Mean Power 0 – 100%

0.1% incrementThis is the mean demand of the Laser and is apercentage of the maximum mean Lamp power.

Ramp Up 0 - 9.99 seconds

0.01s incrementThe time taken for the Laser to attain the set Laserpower output when switched from READY to ON.

Ramp Down 0 - 9.99 seconds

0.01s increment

The time taken for the Laser power output to reach zerowhen switched from ON to READY.

CW (ContinuousWave)

Continuous power output defined by Mean Power.

Sine Symmetrical output defined by Mean Power, Frequencyand Depth.

Depth 0 –100%

Depth of sine wave modulation.

100% modulation yields twice the value ofAverage Power.

Square Asymmetrical output with frequency from 100Hz to500Hz.

Square wave oscillates between the Simmer and Peakpower setting.

Peak Power 0 – 200%

Ratio of Peak Power demanded and maximumrated average Laser power.

For a given Peak Power setting, modification ofthe Mean Demand changes the mark-to-space ratio(duty cycle).

For a given Mean Power setting, modification ofthe Peak Power changes both the Peak Power outputand the mark-to-space ratio.

Modulation

Shaped For future use.

Frequency 100Hz to 500Hz Used for Square Wave and Sine Wave.

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Select the SETTINGS Tab. The Process Settings screen will be displayed.

The following parameters can be monitored.

Parameters Range Description

Lamps

Alarm

Lamp

Hours

Hours

Setting for Lamp elapsed hours alarms.

Elapsed hours for Lamp. Also shown as a % of duration toalarm.

Flow

Count

Alarm

Litres/ minute

Litres/ minute

Water flow.

Water flow alarm set point.

Cooler

Hours

Alarm Hours

Elapsed hours.

Elapsed hours alarm set point.

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If POWER TRIPS is enabled, refer to Section 3.7.5.5.4, the following parameters can be set.

Enter the parameter value by either using the + or – keys to toggle the value or select therelevant number keys and then select ENT.


Trips

High Trip Watts If Trip to Ready is selected in the PSU Config screen (refer toSection 0, and power exceeds this limit, the Laser system will revertto READY. If Trip to Ready is not selected, a warning is displayed.

Low Trip Watts If Trip to Ready is selected in the PSU Config screen (refer toSection 0, and power exceeds this limit, the Laser system will revertto READY. If Trip to Ready is not selected, a warning is displayed.

Hi Trip Time Seconds The period the Laser power must exceed the High Trip parameterbefore a Trip will occur.

Lo Trip Time Seconds The period the Laser power must exceed the Low Trip parameterbefore a Trip will occur.

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3.7.5.1.2 Laser Mode

The Laser System can be in either LOCAL or REMOTE.

When the system is in REMOTE mode, it is controlled by the Main Process Controller via theMachine Interface. No parameter settings or control operations can be carried out by the GUIwhilst the system is in REMOTE mode.

When the system is in LOCAL mode, it is controlled by the GUI. All parameter settings andcontrol operations are enabled.

Mode Description

Selects LOCAL mode. LOCAL appears in red next to the MODE label. The Locbutton is greyed out.

Selects REMOTE mode. REMOTE appears in red next to the MODE label. TheRem button is greyed out.

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3.7.5.1.3 Shutter Mode

Shutter parameters are only available when the Laser system is in LOCAL mode.

If the Shutters have been checked as fitted in the System set-up (refer to Section 3.7.5.3), theShutter mode can be changed in this screen.


The Shutter mode is changed by using the + or – keys to toggle mode.

Normal Shutter operates on demand from the User.

Available in Local and Remote modes.

Timed Shutter will operate at timed intervals as indicated in the value box.Enter the value by either using the + or – keys to toggle value or selectthe relevant number keys and then select ENT.Available in Local mode only. Used for maintenance purposes.

Shutter Mode

Single Single open and close of Shutter.Available in Local mode only when the Laser system is selected ON.Used for maintenance purposes.

Shutter Status Closed

Enabled

Open

The status indication is determined by the selection in the ShutterControl icon.

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3.7.5.1.4 Shutter Operation

If the Shutters have been checked as fitted in the system set-up (refer to Section 3.7.5.3), theShutters can be operated from this screen.

Parameter Description

Select this button to ENABLE the Shutter. The OPEN button must be selectedwithin five seconds or the ENABLE button will timeout.

Select this button within five seconds of selecting ENABLE to OPEN the Shutter.

Enabled

Open

CloseSelect this button to CLOSE the Shutter.

3.7.5.1.5 Pointing Diode

If a Pointing Diode is fitted, it can be switched ON and OFF by selecting the appropriate button

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3.7.5.1.6 Power Graph

Icon Description

Select to return to Process screen.

Select to start monitoring power.

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3.7.5.1.7 Process View Screen

This screen is for future use.

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Level 3 Configuration Access

Log on (refer to Section 3.7.3.1) at Level 3 to display the Level 3 Overview screen. Thiscontains Diagnostic and Configuration screens for fault diagnosis and system set-up.

The Level 3 screen contains all the icons and functions of Level 2 with the addition of theConfiguration icon. The Keyswitch will be red.

Icon Description

Select the Configuration button to display one of the Diagnostic and Configurationscreens. The actual screen displayed will be the last active screen.

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3.7.5.2 Screen Selection

The Configuration screen displays six icons that enable the User to select the required facility.

Icon Description

Settings

Select this button to display the Settings screen, refer to Section 3.7.5.3.

Data Logs

Select this button to display the Data Logs screen, refer to Section 3.7.5.4.

Maintenance

Select this button to display the Maintenance screen, refer to Section 3.7.5.5.

Monitor

Select this button to display the Monitor screen, refer to Section 3.7.5.6.

Diagnostics

Select this button to display the Diagnostics screen, refer to Section 3.7.5.7.

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3.7.5.3 Settings Screen

This screen contains a set of tabbed displays that allow the User configure the system settings.

3.7.5.3.1 General Tab


View For future use.

SPC Statistical Process Control. Select to enable collection of Laser power data.

Shutters Fitted Select to enable the Shutters fitted, refer to Section 3.7.5.1.4.

Data Display Selects the items to be displayed in the Data Display icons, refer to Section 3.7.2.

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3.7.5.3.2 Password Tab

This screen allows the passwords to be edited.

Select the EDIT button to display the Password Edit screen.

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3.7.5.3.3 Password Editing Screen

The Password Edit screen allows the password for each Access Level to be edited using eitherthe PC keyboard or selecting the display keyboard on the screen.

Enter new password for the Access Level.

Select ↵

The display reverts to the Password Setting screen and shows the new password.

To exit the Password Edit screen without entering a password:

Select the Esc key.

The display will return to the Password Setting screen and shows the original password.

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3.7.5.3.4 Language Tab

This screen enables the display language to be selected.

Select the appropriate radio button to display the required language.

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3.7.5.3.5 Comms Tab

This screen allows the Communications parameters to be set. The text entries will be Factoryset and will only be changed if a different PC or modem is to be used. Text entry is made usingthe PC keyboard.

The TRACK icon in the Modem area of the screen will allow screen activity to be tracked.


Modem Select to allow modem access.

Select the port required.

Enter the Initiation string, Dial string and Connect time.

Network Select to allow Network access.

Enter the Internet Provider address.

OPC Select to allow Object linking and embedding for Process Control.

Enter Laser number. This feature is for future use.

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3.7.5.3.6 Laser Type Tab


Simulation Settings Select the required Laser Type to be shown in Simulation Mode.

Run Settings Select the configuration settings on the Process Laser to the required LaserType. This can be done whilst the Laser is operating.

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3.7.5.3.7 Machine Interface Tab


Control Settings Not required on the JK501/401 Series Laser.

Serial I/F For future use.

Start-up Mode Determines whether the Laser starts in Local or Remote mode.

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3.7.5.4 Data Logs Screen

This screen contains a set of tabbed displays that show the data collated by the Control System.The Data Logs screen also contains File Management icons.

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3.7.5.4.1 File Management

Each Data Log can store up to ten files. The active file is Log 0 and the earliest is Log 9. Whenthe limit is exceeded, the File Manager will delete Log 9, re-number the current logs andgenerate a new Log 0.

These files are automatically restricted to 1.4Mb to allow archiving on to floppy disc. A new Logwill be generated when the active Log reaches this limit.

File management icons are displayed according to the screen selected.

To display a log other than the Log 0:

Select FILE MANAGER.

Select SELECT LOG.

Select the required Log

Select EXIT.

Icon Description

File Manager.

Displays the File Manager Screen.

Delete Log

Deletes the selected Log.

Archive Log

Saves Log to floppy disc.

.

Select Log

Selects the Log to be displayed on the Tab screen.

Date/Event

Toggles the selected Log between date and event number order.

Print.

Prints selected Data Log.

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3.7.5.4.2 Error Tab

The Error Tab screen displays the active or the selected Error Log.

3.7.5.4.3 Event Tab

The Event Tab screen displays the active or the selected Event Log.

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3.7.5.4.4 Warning Tab

The Warning Tab screen displays the active or the selected Warning Log.

3.7.5.4.5 Soak Tab

The Soak Tab screen displays the active or the selected Soak Log.

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3.7.5.4.6 Maintenance Tab

The Maintenance Tab screen displays the active or the selected Maintenance Log.

3.7.5.4.7 CommsTab

The Comms Tab screen displays the active or the selected Comms Log.

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3.7.5.4.8 SPC Tab

The Statistical Process Control Tab screen displays the active or the selected SPC Log.

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3.7.5.5 Maintenance Screen

The Maintenance screen contains a set of tabbed displays that allow the User to monitor,configure and tune the Laser System.

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3.7.5.5.1 Counters Tab


Water Alarm The number of hours that will generate an alarm. This figure is set using theDisplay keyboard.

Water Run Time The elapsed hours of the Cooling Water. This figure is reset to zero using theDisplay keyboard. A Maintenance Confirm window will appear on reset.

Shutter Ops The total number of Shutter operations. This figure is reset to zero using theDisplay keyboard. A Maintenance Confirm window will appear on reset. If theLaser System has the Timeshare facility, all Shutter counts will be displayed.

Lamp Alarm The number of hours that will generate an alarm. This figure is set using theDisplay keyboard.

Lamp Hours The elapsed hours of Lamps 1 and 2. This figure is reset to zero using theDisplay keyboard. A Maintenance Confirm window will appear on reset.

System On Time The elapsed hours of System operation. This figure is reset to zero using theDisplay keyboard.

Laser On Time The elapsed hours of Laser operation. This figure is reset to zero using theDisplay keyboard.

Maintenanceprompt tick box

Generates an automatic prompt when maintenance is due when ticked.

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3.7.5.5.2 Tuning Tab

This screen provides the dynamic information used when tuning the Rear Mirror. This ensuresthat the Rear Mirror is positioned to give maximum reflection of the beam into the Laser Rodand therefore provide maximum mean power.


Power A dynamic, real time indication of the power. The maximum power achieved isindicated by the red indicator.

Start Tune Select to start or stop the Tuning cycle.

Readings Dynamic, real time indicators of maximum and mean power.

Laser Settings The mean power setting. This can be set using the display keyboard.

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3.7.5.5.3 Soak/Cycle Tab

This screen enables the Soak cycle to start and stop. It also generates the Soak Log.


Start/Stop Soak Select this button to start or stop the Soak Test.

A message appears in the Message Banner when the Soak Test commences.

Start/Stop Cycle Select to start or stop the Laser Test Cycle.

A warning window will appear if the Shutter is closed.

A warning window will appear to warn of Shutter operation.

A flashing red banner will appear when the Shutter is operating.

A message appears in the Message Banner when the cycle commences.

Sample Rate The number of minutes between samples. Incremented by the + and – buttons.

% Dynamic indication of the percentage of time until next soak sample.

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3.7.5.5.4 PSU Config Tab

This screen allows the User to configure the PSU parameters.


Power The power parameters are set using the display keyboard.

Pcal Calibrated Power. Compensates for the ageing effect ofFlashlamps.

Simmer Level The level for Simmer power.

Cruise Range For future use.

Cruise Sensitivity For future use.

PSU Gains The Output Power % of the PSUs.

Power Trips Enable Select to enable Power Trips.

Trip to Ready Select to cause Laser to Trip to Ready if Power Trip occurs. If notselected, a warning is displayed.

ExternalPowerControl

Enable Select to enable EPC (Customer option, refer to Section 5.7).

High Power Limit When EPC is enabled, these limits are set usingLow Power Limit the Display keyboard.

Closed Loop Enable Select to enable Closed Loop Control. The control system continuouslychecks the power and adjusts the input power to the lamps accordingly. This happensin the background and the displayed Mean Power (%) value will remain the same.

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3.7.5.6 Monitor Screen

3.7.5.6.1 PC Tab

This screen displays the details of the User Interface, Hardware Platform, Operating Systemand Software.

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3.7.5.6.2 Comms Tab

This screen allows all Communications Channels to be monitored.

Icon Description

Enables/Disables filtering of Communications Alarm events.

Enables/Disables filtering of Communications Process events.

Enables/Disables filtering of Communications Control events.

Log CommsSelect to log Comms details.

Enables/Disables recording of Comms events to a file which may then be viewedin the LOGS area.

Delete all displayed events in Rx DATA and Tx DATA fields.

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3.7.5.7 Diagnostics Screen

This screen contains a set of tabbed displays that allow the system to be operated, the I/O to bemonitored, data to be downloaded from the Parameter Nodes and power curves generated.

3.7.5.7.1 System Tab

Icon Description

Cooler OFF/ON Select to set Cooler ON or OFF.

Laser to Ready Select to set Laser to READY.

Laser to ON Select to set Laser ON.

Shutter Open Select to set Shutter to OPEN.

Shutter Close Select to set Shutter to CLOSE.

Pointing On Select to set Pointing Diode to ON.

Pointing Off Select to set Pointing Diode to OFF.

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3.7.5.7.2 I/O Tab

This screen displays the status of the Level Switch, Over Temperature Switch, Pump Contactor,Pump Overload, Relay A and Relay B.

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3.7.5.7.3 Nodes Tab

This screen allows Program files to be downloaded to the Control Nodes within the LaserDistributed Control System.

Icon Description

Select to open Catalogue screen.

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Catalogue Screen

A Catalogue contains all the files to be downloaded. This screen allows the catalogues to betransferred between drives.

Icon Description

Select to return to Node screen.

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3.7.5.7.4 Power Curve Tab

This screen allows a Power Curve to be generated and printed.

Icon Description

Select to generate Power Curve (Laser status must be ON or Start button will begreyed out).

Select to display File Manager.

Select to print Active Log.

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4. Alarm and Warning Handling

4.1 Alarm and Warning DisplaySystem faults will cause either an Alarm or a Warning to be displayed on the screen.

Alarms will normally stop the Laser operating (some Shutter and Machine Interface alarms donot stop the Laser). Alarms cause the periphery of the relevant icon to flash in red and an AlarmMessage to be displayed in the Alarm Banner. Alarm indications will remain present until thefault has been cleared and the RESET button selected. If more than one alarm exists, the nexthighest priority alarm will be displayed.

Warnings indicate a problem but allow continued operation. Warnings cause the periphery ofthe relevant icon to flash in yellow and a warning message to be displayed in the MessageBanner. Warning indications will remain present until the problem has been cleared. This may ormay not require manual intervention.

4.2 AlarmsAlarms are identified by codes displayed in the Alarm Banner, refer to Figure 7.

Figure 7 - Alarm Message Screen

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4.2.1 Alarm Response

The following responses should taken when an Alarm is generated.

Step Action Response

Reset Alarm.

If Alarm resets go to Step 3. 1

Periphery of appropriate icon on GUI screendisplayed in flashing red.

Alarm code and message displayed in AlarmBanner. If Alarm does not reset, refer to Section

4.2.2 and rectify cause of Alarm.

2 Alarm List generated. Clear Alarm list.

3 Alarm List cleared. Resume Operations.

4.2.2 Alarm Codes

Alarm Code Alarm Description Meaning

Case 265 LCC DSP not communicating LCC DSP Node card fault

Case 769 Interlock feed 24Vdc missing

Case 770 Brown Out Trip Brown Out Interlock Tripped

Case 771 Phase rotation fault Check phase detection

Case 772 Three phase overload Check surge suppressors

Case 773 Spare Interlock 1




Case 777 Shutter rack interlock Shutter not in correct position orinterlock

Case 778 GUI Keyswitch Off Keyswitch off on GUI or remote PCbox

Case 779 GUI Emergency stop pressed E/stop pressed on GUI or remote PCbox

Case 780 Emergency stop pressed Laser cabinet E/stop pressed

Case 781 Customer Remote Interlock Check connections on SK602



Case 803 Safety relay out KA1 In when should be out

Case 804 Safety relay in KA1 Out when should be in

Case 805 Shutter Not Responding Shutter node fault/no communication

Case 806 Software error Error in software code or timeout fault

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Case 807 Cooler pump not responding Cooler node fault/no communication

Case 808 Emission indicator fault Software can’t start emission indicators

Case 809 Safety relay fault KA1 Didnt operate during sequence

Case 810 Boost not responding Boost node fault/no communication

Case 811 LCC not responding LCC node fault/no communication

Case 812 Failed to simmer Simmer fault/check lamps

Case 813 Failed to enable lamps PSU or communication

Case 1025 Low Coolant Level Incorrect water level

Case 1026 Water Over Temperature High water temp. in system

Case 1027 Cooler Relay Fault Cooler relay not operating

Case 1028 Cooler Overload Relay Fault Cooler overload relay trip out

Case 1029 Water Low Temperature Low water temp in tank

Case 1030 Water High Temperature High water temp in tank

Case 1031 Water Very High Temp. Very high water temp in tank

Case 1032 Water High Conductivity Incorrect conductivity level

Case 1033 Low Flow Alarm Low flow detected in cooler

Case 1034 High Flow Alarm High flow detected in cooler

Case 1035 Temperature Sensor Fault No reading reported

Case 1036 Conductivity Sensor Fault No reading reported

Case 2817 Contactor Not In (K1) Boost contactor fault



Case 2820 Contactor Not Out (K1) Boost contactor fault



Case 2823 Low Input Voltage Low input voltage to boost

Case 2824 Low Boost Voltage Low DC link voltage after boost

Case 2825 Lamp Driver Not Responding Boost node fault/no communication

Case 2826 Boost Sequence Error PSU or communication

Case 2827 Boost Discharge Fault DC link voltage too high aftershutdown

Case 2828 Boost Output Too Low Low boost voltage output

Case 2829 Boost Over Temperature Boost high temperature

Case 2830 Lamp Off Lamp driver has gone to OFF state

Case 2831 Low Input Voltage Rectified (Input) volts low

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Case 2832 High Input Voltage Rectified (Input) volts high

Case 2833 Brown Out Trip Brown out detected by boost

Case 2834 DSP Comms Error Boost node card Fault

Case 2835 Lamp Comms Error Comms watchdog from LD stopped.

Case 5377 Simmer Contactor Fault Lamp Driver contactor error

Case 5378 Contactor Not Out Contactor IN when should be OUT

Case 5379 Software Sequence Error PSU software control error

Case 5380 Contactor Not Out Contactor IN when should be OUT

Case 5381 Contactor Not In Contactor OUT when should be IN

Case 5382 Low Simmer Lamp Driver low simmer level

Case 5383 High Simmer Lamp Driver high simmer level

Case 5384 Lamp Over Temperature Lamp Driver high temperature

Case 5385 Brown Out Trip Brown out detected by lampdriver

Case 5386 DSP Comms Error Lamp Driver node card Fault

Case 5387 Boost Comms Error Comms watchdog from boost stopped.

Case 5388 Over Power Lamp Driver power limit

Case 7937 Shutter 1 close not detected Not closed

Case 7938 Shutter 1 false open detected Open when should be closed

Case 7939 Shutter 1 open not detected Not Open

Case 7940 Shutter 1 false close detected Closed when should be open

Case 7941 Shutter 1 open timing error Not open in time limit

Case 7942 Shutter 1 close timing error Not closed in time limit

Case 7943 Shutter 1 over temperature Shutter trips on high temperature

Case 7944 Shutter 1 FCMS power fault FCMS fault on PSU

Case 7945 Shutter 1 FCMS fault Fault on FCMS circuit

Case 7946 Shutter 1 workstation door close fault Doors not closed in time

Case 7947 Shutter 1 BDI fault Shutter control fault

Case 7948 Shutter 1 workstation door reset fault Door interlocks not reset in time

Case 7949 Shutter 1 pointing diode fault Low current to diode.






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Case 8716 Shutter 4 workstation door reset fault -Door interlocks not reset in time


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Case 8961 Shutter 5 close not detected Not Closed


























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4.3 WarningsWarnings are identified by codes displayed on the Warning Message screen, refer to Figure 8.

Figure 8 – Warning Message Screen

4.3.1 Warning Response

The following responses should be taken when a Warning is generated.

Step Action Response

Reset Warning.

If Warning resets go to Step 3. 1

Periphery of appropriate icon on GUIscreen displayed in flashing yellow.

Warning code and message displayed inWarning Banner.

If Warning does not reset, refer toSection 4.3.2 and rectify cause ofWarning.

2 Warning List generated. Clear Warning list.

3 Warning List cleared. Resume Operations.

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4.3.2 Warning Codes

Code Warning Reason Prognosis

1 Low Trip The Laser Output Power hasdropped below the Low Tripparameter setting.

2 High Trip The Laser Output Power has risenabove the High Trip parametersetting.

3 Lamp Life The Flashlamps have been usedfor longer than their specifiedreliable life.

The lamps must be changed.

61 LowTemperature

The Coolant temperature has fallenbelow the Low Temperatureparameter setting.

Valve is set open.Laser has been OFF in coldroom.

62 HighTemperature

The Coolant temperature has risenabove the High Temperatureparameter setting.

Valve is not open fully.External water supply is OFF.

63 HighConductivity

The Coolant Conductivity has risenabove the High Conductivityparameter setting.

De-ioniser or Filter needchanging.System has been left unused.

64 Low Flow The Coolant Flow rate has fallenbelow the Low Flow parametersetting.

Blockage in Coolant circuit.Pump connected backwards.

65 High Flow The Coolant Flow rate has risenabove the High Flow parametersetting.

Blockage in parallel flow path.Wrong Pump fitted.Faulty Flow Meter.

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5. Optimisation

5.1 IntroductionThe Optimisation procedure consists of tuning the Rear Mirror and generating a Power Curve.When this has been done, the Laser will operate at maximum efficiency. The setting-up ofExternal Power Control (customer option) is described in Section 5.7.

Refer to Section 3 for GUI Operating Instructions.

5.2 Initial Set-upPower-up the Laser (Refer to Section 3.2).

Select the LASER ON (II) button to switch Laser ON.

Ensure all Shutters are closed.

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5.3 Rear Mirror TuningStep Action Remarks

1 Select PROCESS button

Set MODULATION to CW

Set MEAN POWER to 0%

Select SAVE

Exit Process screen

Respond to Screen prompt.

2 Select CONFIGURATION button

Select MAINTENANCE button

Select TUNING

Select START TUNING

3 Refer to Figure 9.

Rotate the X and Y adjusters on theRear Mirror Assembly to give amaximum Mean Power output.

The Mean Power value is displayed in the MEANPOWER icon.

Maximum Mean Power is the maximum valueachieved during the Tuning.

If a maximum Mean Power value is achieved butsubsequently cannot be repeated it isrecommended that the tuning cycle is stoppedand restarted.

4 Select MEAN POWER % value.

Set value to 30%


Rotate the X and Y adjusters on theRear Mirror Assembly to give maximumMean Power output.

6 Select MEAN POWER % value.

Set value to 50%


Rotate the X and Y adjusters on theRear Mirror Assembly to give maximumMean Power output.

8 Select STOP TUNE

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Figure 9 - Rear Mirror X and Y Adjusters

1. Y Axis Adjuster

2. X Axis Adjuster

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5.4 Power Curve GenerationThe Power curve is generated to provide a graphical indication of the Laser performance.

Step Action Remarks

1 Select PROCESS button

Set MODULATION to CW

Set MEAN POWER to 0%

Select SAVE

Exit Process screen

Respond to Screen prompt.

Select DIAGNOSTICS button

Select POWER CURVE tab

Set increment to 2%

2

Select START The Power Curve will be generated.

POWER LOG RUNNING will be displayedin the Message banner to indicate that thePower Log is being generated.

When the Power Curve is being generated,two green lines will appear on the graphaxis. The horizontal line represents themaximum design power and the vertical linerepresents 90% of input power. These linesshould intersect when the Power Curve hasbeen generated.

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5.5 Focus Head Set-upThis procedure sets the focal point of the beam at the workpiece to achieve optimumperformance. This is achieved by taking a number of ‘burns’ at progressive distances from theworkpiece to ascertain the minimum spot size (beam waist).

Step Action

CautionIf a Pointing Diode is fitted to the Laser System, it must be notedthat the position of the focal plane of the Pointing Diode beam isdifferent to that of the YAG beam. Therefore, the Pointing Diodebeam must NOT be used to define the focal point for the Process.

CautionFibre ends are easily damaged.Fibre handling precautions must be observed throughout thisprocedure, refer to Section 1.15.

1 Secure the Focus Head in a Z-axis position that allows small incrementsin vertical movement.

2 Clamp test piece (stainless steel) in position below the Focus Head.

3 Position and secure the Focus Head approximately 5mm above thespecified Focal Point of the Focus Head.

4 Ensure Laser Status is READY.

5 Set MODULATION to CW.

6 Set MEAN POWER to 90%

7 Set the Laser to ON.

8 Set SHUTTER MODE to NORMAL.

9 Set SHUTTER to ENABLE.

Step 10 must be carried out within five seconds of Step 9.

10 Set Shutter to OPEN

Record a burn length on the test piece.

11 Set Shutter to CLOSED.

12 Position the test piece so that a clean section is exposed to the FocusHead.

13 Position the Focus Head 1mm closer to the test piece.

14 Repeat steps 9 to 12 until eleven burns are recorded and the Focus Headis 5mm below the specified Focal Point of the Focus Head.

15 Measure the burn diameters recorded on the test piece (refer to Figure10).

16 The Focal Point that gives the smallest burn diameter is the optimum andshould be set on the Focus Head.

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Figure 10 – Focus Burns

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5.6 CompletionWhen the Optimisation has been completed:

Select OVERVIEW screen

Select the KEYSWITCH.

Reset the appropriate Access Level if applicable (refer to Section 3.7.3.1).

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5.7 External Power Control (EPC) Set-up (Customer option)Refer to the 401/501 Pre-installation Manual for the Machine Interface (M/C) connections.

Connect the analogue signal, from the function generator to PL601 – M/C Interface, as shownbelow:

PL601 – Pin 61 – Input (+)

PL601 – Pin 62 – Input (-)

WARNINGDO NOT USE AN INPUT SIGNAL GREATER THAN +10VDC.DAMAGE TO THE ANALOGUE INPUT DEVICE WILL OCCUR.

Connect an external +24Vdc supply to the M/C Interface supply, pins 70 & 71 on PL601.

The input signal should be 10Vdc which is equivalent to 100% Mean Power. EPC control willlook at the Pcal and the PSU gains and limit power output accordingly.

Switch ON and power-up the laser (refer to Section 3.2).

Select the MAINTENANCE button.

Select the PSU CONFIG button.

In the External Power Control (EPC) box, Tick enable (refer Section 3.7.5.5.4).

Note: High power limit will be set to 100%, and low power limit 0%.

Set the Mean Power to 0% demand.

Set the laser status to ON (II).

You are now ready to run the laser under EPC control.

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6. User Maintenance

6.1 IntroductionRoutine Maintenance is restricted to the following items:

• General inspection.

• Coolant Filter replacement.

• De-ioniser cartridge replacement.

• Flashlamp replacement.

• Cover Slide cleaning and replacement.

• Fuse replacement.

• Surge Suppressor replacement.

• Bulb replacement.

The Coolant Replenishment Procedure has been included in this Section but it is not a RoutineMaintenance task. It has been included to ensure that, if required, the correct procedures fordraining and filling are available to the User

All other Maintenance and Servicing tasks are contained in the Servicing and MaintenanceManual issued to Authorised personnel only.

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6.2 Routine Maintenance Tasks

Task Periodicity Reference Maint.Level

General Inspection Weekly Section 6.3

Filter Replacement 12 months or 2000 hours* Section 6.5 1

De-ioniser Replacement 12 months or 2000 hours* Section 6.6 1

Flashlamp Replacement As necessary or when elapsedhours of Lamp reaches theconfigured limit

Section 6.7 1

Cover Slide Replacement As necessary Section 6.8 1

Surge Suppressor Replacement On failure Section 6.9 1

Bulb replacement On failure Section 6.10 1

* Whichever is sooner.

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6.3 General InspectionStep Action

WARNING

ELECTRIC SHOCK HAZARDS EXIST.

ELECTRIC SHOCK CAN CAUSE SERIOUS OR FATAL INJURY.

1 Carry out Power OFF Sequence.

Wait for 2 minutes. This ensures that the capacitors have discharged to a safe level.

2 Unlock and open Laser Head lid.

3 Carry out an inspection of the Fibre Optic Assembly.

Check for signs of damage, overheating, loose joints or any indication that could beinterpreted as an early warning of a problem.

A damaged Fibre Optic Assembly or component must be replaced immediately.

4 Examine Laser beam path and ensure all housings and beam sealing tubes are ingood condition, fit correctly and are secure.

Check for any gaps or openings between Laser path and Beam Delivery components.

WARNING

IF ANY FAILURE OR DAMAGE IS NOTED, THE LASER MUST NOT BEOPERATED AGAIN UNTIL THE DEFECT HAS BEEN CORRECTED.

IF ANY FAILURE OR DAMAGE APPEARS TO BE A RESULT OF EXPOSURE TOTHE LASER BEAM, THE CAUSE MUST BE ASCERTAINED AND CORRECTEDIMMEDIATELY.

5 Check all Safety Labels are in position, secure and legible

Refer to Section 2.7.3 for label details and Error! Reference source not found. forlocations.

If any labels are missing or illegible, replacements can be obtained from GSI Lumonicsquoting the part numbers given in Section 2.7.3.

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6.4 Coolant ReplenishmentPersonnel authorised to Maintenance Level 1 can carry out this procedure.

6.4.1 Materials

Parts Required Part Number

50 litres of Analar Grade 3 Water 1D0M00801

Tools/Equipment Spares/Consumables

Standard Tool Kit O-Ring Kit

Door Key Paper Towels

Container - 60 litre capacity Plastic Bag

Funnel

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6.4.2 Draining Procedure

Figure 11 – Coolant Draining

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Refer to Figure 11 for item identification.

Step Action

WARNINGELECTRIC SHOCK HAZARDS EXIST.





3 Using suitable tool, depress Air Vent on Pumping Chamber to allow Coolant to draininto reservoir.

4 Unlock and open Cooler Bay door.

5 Identify Reservoir Hose (item 4). Position container on the floor adjacent to ReservoirHose.

6 Remove Reservoir Hose (item 4) from Retaining Clip (item 2). Loosen cap (item 1).Lower Reservoir Hose into the container.

7 Remove and retain Reservoir Hose cap (item 1) and allow Coolant to drain intocontainer.

8 If Coolant System is to be re-filled, refer to Section 6.4.3 for Filling Procedure.

9 Replace Reservoir Hose Cap (item 1).

10 Replace Reservoir Hose (item 4) in Retaining Clip (item 2).

11 Close and lock Cooler Bay door.

12 Close and lock Laser Head lid.

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6.4.3 Filling Procedure

The Coolant level should be between the red minimum line and the green maximum line on theCoolant Level Indicator (item 3, Figure 12). If it is close to the red line, Coolant should be added.

Figure 12 – Coolant Filling

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Step Action






3 Ensure Reservoir Hose (item 5) is securely held in Retaining Clip (item 2).

4 Remove Reservoir Hose cap (item 1) and insert a funnel.

Caution

Always use new Coolant. Do not fill Laser with used Coolant as it could becontaminated.

5 Fill the Reservoir Tank with Analar Grade 3 water until level reaches green line onLevel Indicator (item 3).

6 Replace Reservoir Hose cap (item 1).

7 Carry out Power ON Sequence.

8 Allow cooling system to run for 1 minute.


10 Inspect pipework, holder and fittings for signs of leakage.

11 Rectify cause of any leakage.

12 Check Coolant level. Add more Coolant if necessary.

13 Wipe up any spillage with paper towels.

14 Close and lock Cooler Bay door.


16 Select the Maintenance/Counters screen and reset the Water Run Time to zero.

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6.5 Filter Replacement ProcedurePersonnel authorised to Maintenance Level 1 can carry out this procedure.


Paper Filter 550000101



Filter Wrench Paper Towels

Door Key Plastic Bag

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Figure 13 – Filter Replacement Procedure

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Step Action






3 Using suitable tool, depress Air Vent on Pumping Chamber to allow Coolant to draininto reservoir.


5 Refer to Section 6.4.2 and drain Coolant.

6 Using Filter Wrench, unscrew and remove Filter Body (item 5).

7 Remove and dispose of Paper Filter.

The Paper Filter is non-hazardous and can be disposed of through normal IndustrialWaste routes

8 Empty Coolant from Filter Body (item 5).

9 Inspect O-Ring for signs of damage. Replace if necessary.

10 Remove packaging from new Filter.

11 Partly fill the Filter Body with Coolant.

12 Fit a new Filter in the Filter Body. Ensure that the Filter is located correctly over thespigot on the base of the Filter Body.

13 Ensure the O-Ring is fitted and serviceable.

14 Refit the Filter Body and tighten using a Filter Wrench.

15 Refer to Section 6.4.3 and refill with Coolant.

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6.6 De-ioniser Replacement ProcedurePersonnel authorised to Maintenance Level 1 can carry out this procedure.


De-ioniser Resin Refill M7357060X



Door Key Paper Towels

Filter Wrench Plastic Bag

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Figure 14 - De-ioniser Replacement Procedure

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Step Action



1Carry out Power OFF Sequence.



3 Using suitable tool, depress Air Vent on Pumping Chamber to allow the Coolant todrain into the reservoir.

4 Unlock and open the Cooler Bay door.

5 Refer to Section 6.4.2 and drain the Coolant.

6 Unscrew and remove the De-ioniser Body (item 1).

7 Remove De-ioniser cartridge from De-ioniser Body.

8Remove and retain the rubber gasket. Inspect for signs of damage and replace ifnecessary.

9 Inspect the O-Ring for signs of damage and replace if necessary.

10 Unscrew, remove and retain cartridge lid.

11

Empty used resin into plastic bag and dispose.

Resin is non-hazardous and can be disposed of through normal Industrial Wasteroutes. Contact GSI Lumonics for a Materials Safety Data Sheet.

12Wash out cartridge until all resin is removed.

Dry cartridge using paper towel.

13 Open new resin container. Tip new resin into cartridge.

14 Refit cartridge lid, ensuring that it is finger tight only.

15

Refit cartridge in De-ioniser Body (item 1).

Ensure that the spring on the base of the cartridge is correctly located over the spigoton the base of the De-ioniser Body.

16 Refit washer.

17 Ensure O-Ring is fitted and serviceable.

18 Refit the De-ioniser Body (item 1).

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6.7 Flashlamp Replacement ProcedurePersonnel authorised to Maintenance Level 1 can carry out this procedure.

6.7.1 Materials


Flashlamps x 2 or complete set PA024000X

GSI Lumonics recommends that Flashlamps are changed as a complete set or in pairs. Thiswill increase system running time.



Flashlamp handle Paper towels

Eye protection Plastic gloves.

Lint free cloth

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6.7.2 Removal Procedure

Figure 15 – Flashlamp Removal Procedure

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Step Action






3 Identify Pumping Chamber (item 12) containing Flashlamps to be replaced.

4Identify Air Vent (item 2) located on Pumping Chamber lid.

Using suitable tool, depress Air Vent on Pumping Chamber (item 1) to allow Coolant todrain into reservoir.

5 Using 4mm hex key, remove 4 bolts (item 3) securing Pumping Chamber lid.

Caution

WEAR PLASTIC GLOVES

Optical components are fragile and are easily damaged. Extreme care must be takenwhen handling optical components. Always handle optical components in a cleanenvironment.

6Lift Pumping Chamber Lid until Locating Pin (item 5) is clear of Pumping Chamber. TiltPumping Chamber Lid towards rear of Laser cabinet to prevent wetting of Laser Railand equipment. Avoid spilling water on to the Gold Reflectors.

7Remove Pumping Chamber lid. Place in a clean area.

Precautions should be taken to prevent damage to the Air Vent (item 2) when placingPumping Chamber lid on work surface.

8If necessary, dry Upper Gold Reflector (item 4) using lint free cloth.

Protect Gold Reflector from damage or contamination.

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Removal Procedure continued.

Figure 16 - Flashlamp Removal Procedure

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Step Action

CAUTIONFlashlamps are made of glass and may splinter or shatter. Eye protection must beworn whilst removing Flashlamps. Carefully remove broken glass with tweezersor long nose pliers.

9 Using 3mm hex key, fit Flashlamp Extraction Handle (item 6) to Flashlamp (item 7) atrear of chamber.

10Exerting an even pressure, lift Flashlamp (item 7) until it is clear of Pumping Chamber(item 1).

Remove Flashlamp (item 7).

11 Using 3mm hex key, fit Flashlamp Extraction Handle (item 6) to Flashlamp (item 8) atfront of Pumping Chamber (item 1).

12Exerting an even pressure, lift Flashlamp (item 8) until it is clear of Pumping Chamber(item 1).

Remove Flashlamp (item 8).

13 If Flashlamp (item 7 or 8) has broken, carefully remove glass with tweezers or long nosepliers. Dispose of glass in suitable container.

14 Using lint free cloth, carefully dry excess water from inside chamber.

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6.7.3 Installation Procedure

Figure 17 - Flashlamp Installation Procedure

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Step Action



Caution

WEAR PLASTIC GLOVES.

Optical components are fragile and are easily damaged. Extreme care must betaken when handling optical components. Always handle optical components in aclean environment.

1 Ensure Pumping Chamber (item 1) is dry.

2Remove new Flashlamp from packaging. Remove end caps from cooling connectors.

New Flashlamps are supplied with Extraction Handles attached. Fit rear Flashlampfirst.

3 Carefully push new Flashlamp (item 7) into rear Flashlamp connectors.

4 Using an even pressure, push Flashlamp down until secure.

5 Using 3mm hex key, remove Extraction Handles (item 6) from Flashlamp.

6 Carefully push new Flashlamp (item 8) into front Flashlamp connectors.

7 Using an even pressure, push Flashlamp down until secure.

8 Using 3mm hex key, remove Extraction Handles (item 6) from Flashlamp.

9 Inspect O-rings on chamber sides and verify they are intact and secure. Replace ifnecessary.

CautionCare must be taken when replacing Pumping Chamber lid to avoid damage toFlashlamps, Laser Rod or gold Reflectors.

10

Tilt Pumping Chamber lid towards the rear of the Laser Head to prevent wetting theLaser Rail.

Position Pumping Chamber lid over Pumping Chamber (item 1).

Ensure Locating Pin (item 5) is aligned with Locating Hole (item 10) at rear of PumpingChamber.

11 Lower lid onto Pumping Chamber.

12 Secure Pumping Chamber lid to Pumping Chamber with 4 bolts (item 3) using 4mm hexkey.

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Installation Procedure continued.

Figure 18 – Flashlamp Installation Procedure

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Step Action

13 Carry out Power ON Sequence.

14 Ensure GUI is powered up and running.

15 Log on to GUI at Access Level 3.

16 Select CONFIGURATION button.

17 Select DIAGNOSIS button.

18Select ‘COOLER TO ON’ button.

Coolant Pump will start.

19 Check Pumping Chamber for signs of leakage. If leaks are detected shut down Laserimmediately.

20 Rectify cause of leak. Wipe up spillage using paper towels. Use lint free tissues to dryUpper Gold Reflector (item 7) and Lower Gold Reflector (not shown in Figure 18).

21 If Laser was shut down in step 19, repeat step 13 to restart Laser.

22 Ensure GUI is powered up and running.

23 Log on to GUI at Access Level 3.

24 Select CONFIGURATION button.

25 Select MAINTENANCE button.

26

Select Lamp hours counter.

Reset to zero.

Select ENTER.

Respond to Screen Prompt.

Counter will reset to zero.

27 Refer to Section 5 and carry out Optimisation Procedure for Balancing and Tuning.


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6.8 Cover Slide Replacement Procedure

6.8.1 Materials

Part Required Part Number

Cover Slide 123412301



Rubber Bulb Puffer PROPAN-2-OL

Bulb Removal Tool Lint Free Tissues

Door key Plastic Gloves

Small Vacuum Cleaner

6.8.2 Removal Procedure

1

2

3

4

Figure 19 – Cover Slide Removal Procedure

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Step Action




2Remove excess dust from the area around Cover Slide (item 3) using a small vacuumcleaner.

3Remove Retaining Spring (item 4) and Cover Slide (item 3).

Take care not to strike or damage Focusing Head (item 1).

4 Remove O-Ring (item 2).

5 Remove Cover Slide (item 3) from Retaining Spring (item 4).

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6.8.3 Cleaning and Installation Procedure

1

2

3

4

Figure 20 – Cover Slide Installation Procedure

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Step Action



1 Clean Retaining Spring (item 4) and place in a clean environment.

2Using Rubber Bulb Puffer, remove dust particles from faces of Cover Slide (item 3).

If Cover Slide (item 3) is damaged or cannot be cleaned sufficiently, replace CoverSlide.

Caution WEAR PLASTIC GLOVES.Optical components are fragile and are easily damaged. Extreme care must betaken when handling optical components. Always handle optical components ina clean environment.

3 Place Cover Slide (item 3) in a clean environment.

4 Carefully fold a lens tissue into a pad that is just slightly narrower than Cover Slide(item 3).

5

Dampen tissue using PROPAN-2-OL (or approved cleaner).

Wipe tissue across the full area of Cover Slide (item 3) in a single stroke.

(Do not use multiple passes as it leaves streaks on the slide).

6

Hold Cover Slide (item 3) by the edge and wipe once more in a single straightmovement. Dispose of the pad.

If necessary, make up a new pad and repeat the process until Cover Slide (item 3)looks clean when viewed as a mirror.

7 Check the cleanliness of Cover Slide (item 3) again.

8 Ensure Retaining Spring (item 4) is clean.

9 Ensure O-Ring (item 2) is serviceable.

10

Fit Cover Slide (item 3) in Retaining Spring (item 4).

Ensure O-Ring (item 2) is in position on Focusing Head (item 1).

Offer both Cover Slide (item 3) and Retaining Spring (item 4) together to FocusingHead (item 1).

Secure Cover Slide (item 3) in position with Retaining Spring (item 4).

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6.9 Surge Suppressor Replacement ProcedurePersonnel authorised to Maintenance Level 1 can carry out this procedure.

6.9.1 Materials


Surge Suppressor 85D884501

Tools/Equipment Consumables

Door key

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Figure 21 – Surge Suppressor Replacement Procedure

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Step Action





2 Unlock and open End Bay door.

3 Locate and remove unserviceable Suppressor FV1, FV2 or FV3 (item 1).

4 Fit a serviceable Suppressor

5 Close and lock End Bay door.

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6.10 Bulb Replacement ProcedurePersonnel authorised to Maintenance Level 1 can carry out this procedure.

6.10.1 Materials


Bulb 24V 6W 640000821


Bulb Extraction Tool

Step Action




2 Unscrew, remove and retain coloured outer Cover of the Lamp.

3 Remove and retain inner Cover.

4 Using Lamp Extraction Tool, rotate unserviceable Bulb 900 anti-clockwise and remove.

5 Using Lamp Extraction Tool, insert serviceable Bulb and rotate 900 clockwise. Ensurebulb is secured.

6 Withdraw Lamp Extraction Tool.

7 Refit Inner Cover.

8 Refit Outer coloured Cover.

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6.11 Bendlock AssemblyThe Bendlock Assembly is available for Output Fibre Termination on PIPA Fibres used in robotapplications.

6.11.1 Assembly Instructions

1. Fit the two Bendlock adaptors using the 4 M3 screws 2. Remove Locator Screw

3. Fit the 18 rings over the Fibre Termination onto the cable

4. Replace the Locator screw

5. Build up the Bendlock assembly using the split-rings, sleeve and snap ring

6. Completed bendlock assembly

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6.12 Fibre Optic Cable Replacement ProcedurePersonnel authorised to Maintenance Level 2 can carry out this procedure.

6.12.1 Materials


Fibre Optic Cable Refer to Section 8 for appropriate partnumber.


Standard Tool Kit

Door key

6.12.2 Fibre Input Termination Removal Procedure

Figure 22 – Fibre Input Termination

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Step Action

WARNING



Caution

A fibre alignment will need to be done upon the removal/installation of the FibreInput Termination

Removal Procedure

1 Ensure the Power is switched OFF.


9 Unlock and open the Laser Head lid.

10 Pull back the Protective Cover (item 1) to expose the Fibre Input Termination (item 2).

11 Unscrew, but do not remove, the clamping screw (item 6) to loosen the RetainingClamp.

12 Carefully and in a straight line, withdraw the Fibre Input Termination (item 2) from theFibre Receiver (item 7).

13 Install a protective cover (not illustrated) over the Fibre Input Termination (item 2).

14 Carefully remove the Fibre cable from the Laser Head.

15 Place a piece of tape over the exposed end of the Fibre Receiver (item 7) to preventingress of dirt or moisture.

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6.12.3 Installation Procedure

Figure 23 – Fibre Input Termination

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Refer to Figure 23 for item identification

Step Action

WARNING



Installation Procedure

1 Ensure the Power is switched OFF.

2 Remove the protective Cover (not illustrated) from the Fibre Input Termination (item 2).

3 Inspect the Fibre cable for damage. Replace if necessary.

4 Ensure the O-Ring (item 4) is installed and serviceable. Replace if necessary.

Caution

The Fibre Input Termination and the Fibre Output Termination are different.Ensure that the Fibre Termination with the chamfer is installed to the Laser HeadFibre Receiver.

5 Ensure that the rear edge of the Fibre Input Termination (item 2) IS chamfered.

6 Pull back the protective Cover (item 1) from the Fibre Input Termination (item 2).

7 Ensure the Locating Pin (item 3) on the Fibre Input Termination (item 2) is aligned withthe Locating Hole (item 5) on the Fibre Receiver (item 7).

8 Insert the Fibre Input Termination (item 2) into the Fibre Receiver (item 7).

The Fibre Input Termination will enter the Fibre Receiver easily and then stop. Slightpressure is then required to ensure that the FCMS connectors have fully connected.The Fibre Input Termination is fully inserted when no aluminium on the FibreTermination is visible at the entrance to the Fibre Receiver.

9 Tighten the Retaining Clamp screw (item 6) to secure the Fibre Input Termination(item 2) in the Fibre Receiver (item 7).

10 Position the protective Cover (item1) over the Fibre Input Termination (item 2).

11 Carry out a Lens Alignment Procedure (Refer to the 401/501 Maintenance Manual1EAA80E03).

12 Close and lock the Laser Head lid.

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6.12.4 Fibre Output Termination Replacement Procedure

Figure 24 – Fibre Output Termination

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Step Action

WARNING



Removal Procedure

1 Ensure Power is switched OFF.

2 Pull back the protective Cover (item 1) to expose the Focus Head (item 7).

3 Unscrew, but do not remove, the Clamping screw (item 6) to loosen the RetainingClamp.

4 Carefully and in a straight line, withdraw the Fibre Output Termination (item 2) from theFocus Head (item 7) and remove the Focus Head.

5 Place the Focus Head (item 7) in protective packaging to prevent ingress of dirt ormoisture.

6 Install a protective Cover (not illustrated) over the Fibre Output Termination (item 2).

Installation Procedure

7 Remove protective Covers from the Focus Head (item 7) and the Fibre OutputTermination (item 2).

8 Inspect the Focus Head (item 7) for damage. Replace if necessary.

9 Pull back the protective Cover (item 1) from the Fibre Output Termination (item 2).

10 Ensure that the rear edge of the Fibre Output Termination is NOT chamfered.

11 Ensure the Locating Pin (item 3) on the Fibre Output Termination (item 2) is alignedwith the Locating Hole (item 5) on the Focus Head (item 7).

12 Insert the Fibre Output Termination (item 2) into the Focus Head (item 7).

The Fibre Output Termination will enter the Focus Head easily and then stop. A slight pressure isthen required to ensure that the FCMS connectors have fully connected. The Fibre OutputTermination is fully inserted when no aluminium on the Fibre Output Termination is visible at theentrance to the Focus Head.

13 Tighten the Retaining Clamp screw (item 6) to secure the Fibre Output Termination(item 2) in the Focus Head (item 7).

14 Position the protective Cover (item1) over the Fibre Output Termination (item 2).

15 If necessary, place a protective cover over the exposed end of the Focus Head(item 7).

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7. Laser Processing

7.1 OverviewSetting up a Laser process is an involved process. This section is for guidance only andis not intended for use without reference to Technical Instruction.

Fibre-optic beam delivery is achieved by focusing Laser light into a fibre-optic cable. The fibreoptic cable on the JK501 is 600µm diameter and on the JK401 it is 400µm diameter. The light ishomogenised as it passes through the cable to the Focus Head.

As light exits from the fibre-optic cable it expands into a Focus Head. This incorporates a re-collimating and focusing lens assembly.

A primary lens re-collimates the expanding beam from the fibre and a focusing lens focuses thebeam down to a small spot on the workpiece surface. Different spot sizes are achieved bychanging the combination of recollimating and focus lens focal lengths.

The JK501/401 Laser can be fitted with a Focus Head that uses a variety of Recollimating andFocusing Lens combinations. This provides a range of focused Laser beam spot sizes.

Different Focus Lenses used in conjunction with a 200mm Recollimating Lens will achieve thefollowing nominal spot sizes:

Focus Lens(mm)

JK401 SpotSize (mm)

JK501 SpotSize (mm)

80 0.16 0.24

100 0.20 0.30

120 0.24 0.36

160 0.32 0.48

200 0.40 0.60

300 0.60 0.90

Focused spot size on the workpiece greatly influences processing performance. In general,whilst operating in Continuous Wave mode, spot size governs both depth and maximum travelspeed achievable when welding and cutting.

At a given demand (Mean Power), smaller spot size achieves greater intensity and higherprocessing speeds. However, small spot sizes require the use of a lens with a short focal length.This means that the lens has to be positioned close to the workpiece thus increasing risk ofdamage to the optics caused by fume and spatter generated during processing. The degree ofrisk is dependent on the materials and type of process being undertaken.

The use of an Air Knife positioned in front of the output housing can protect the optics duringwelding operations. This consists of a jet of high velocity compressed air directed perpendicularto the beam path. A special welding nozzle can be fitted which incorporates an Air Knife andGas Shielding.

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7.2 Welding in Continuous Wave ModeWelding is achieved by focusing the Laser beam onto the material surface at an intensitysufficient to effect material heating, melting and vaporisation.

By moving the workpiece relative to the Laser beam, a continuous weld can be produced alonga pre-determined path.

In a given material, the geometric characteristics of the weld (depth, width, cross-sectional areaetc) are controlled by the following parameters:

• Laser average power.

• Welding speed.

• Focused spot size.

Increased power (with other parameters constant) increases weld width, depth and cross-sectional area.

Increased welding speed decreases depth and cross-sectional area.

Increased focus spot size will increase weld width and decrease depth. In this case, weld cross-sectional area may not change or may reduce depending on the focused spot diameter.

7.3 Welding in Modulation ModeHigh Peak Power improves processing of reflective and high heat conductivity materials. Whenwelding aluminium alloys this capability is crucial to developing a stable Melt Puddle at the focuspoint, especially when lap welding. The energy is quickly drawn away from the Melt by the alloy.The variation in surface reflectivity can be quite large due to surface oxidisation in aluminiumalloys. High peak power overcomes these effects thus ensuring a good process.

Variations in focus position are tolerated more efficiently using a Modulated Beam. When theweld surface varies in distance from the Focus Lens, the use of high Peak Power overcomesthe loss of weld penetration due to the lower intensity in the focus spot.

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7.4 Jigs and FixturesControl of the material position relative to the Laser beam is achieved using Jigs and Fixtures.Good position control is essential if good quality, consistent results are to be achieved.

If flat sheet materials are to be processed, the simplest form of control is by clamping thematerial in a fixed plane relative to the Laser beam. Figure 25 shows two simple arrangements,A - clamping from below and B - clamping from above.

Figure 25 – Position Control Methods

Clamping from above allows high pressures to be exerted on the workpiece and enables rapidchanging of components.

Clamping from below offers the advantage of always presenting the surface of the workpiececonsistently in position with respect to the Laser beam. This method is recommended whenprocessing sheet materials which vary in thickness.

Experience has shown that the clamping method used should ensure that the parts to bewelded are held with the joint ±0.2mm relative to the Laser beam focus position.

2

1

2

1

3

3

4

4

5

5

A

B

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7.5 Shielding GasDuring welding operations, it is normally necessary to provide an inert gas shield around theweld to prevent oxidation.

Under normal conditions, adequate gas shielding can be provided via a pipe to the weld areaaround the beam/material interaction point. Gas flow should typically be 10 - 20 litres/minuteArgon.

Where materials such as Titanium and its alloys require processing with zero contamination, it isnecessary to employ a more sophisticated gas delivery system.

Using a Gas Shoe will achieve the conditions required to process materials withoutcontamination. This device provides an inert atmosphere not only in the region of the moltenweld puddle but also to the solidified weld as it cools. Slightly more gas flow is required whenusing the gas shoe, typically 30 - 50 litres/minute Argon.

Processing materials such as Stainless Steel, Aluminium and Titanium may require inert gasshielding to the Weld Underbead during full penetration welding. A very effective method is tointroduce a channel flooded with inert gas underneath the weld. A gas inlet at one end of thechannel and an outlet at the other is one method of maintaining a constant stream of gas alongthe underbead. The gas outlet should be slightly constricted to help retain the gas at theunderbead but not to cause excessive pressure. Excessive pressure causes concavity of theUnderbead or blows holes in the weld. Flow rates should typically be 2 - 5 litres / minute.

The absence of gas shielding when welding thin sheet mild steel (< 0.3 mm) may not adverselyaffect the properties of the weld and will, in general, allow welds to be produced at higherspeeds and with greater penetration.

For most welding applications, Argon is efficient and cheap. The use of Helium as a shieldinggas is not normally necessary. However, the use of Helium when welding Aluminium alloys is asignificant benefit as it offers improved process stability. This results in a smoother top bead andallows greater penetration to be achieved.

The table below gives details of Gas Shielding requirements and the recommended ShieldingGas.

Material Gas Shielding Requirements Recommended Gas

Mild steel 0 -3.0 mm Gas shielding not always necessary Argon

Steel > 3.0 mm Gas shielding recommended Argon

Stainless steel and nickelalloys

Gas shielding recommended Argon

Aluminium alloys Gas shielding essential Argon/Helium

Titanium alloys Gas shielding essential Argon

Copper alloys Gas shielding may prevent effectivecoupling of the beam into workpiece

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7.6 Fume and Spatter ControlDuring welding operations it is normally necessary to prevent spatter and fume from impactingand accumulating on the Cover Slide that protects the Focusing Lens.

Fume and spatter control is easily achieved by use of a Crossjet. This is a high velocitycompressed air jet, directed perpendicular to the beam path, in front of the Focus Head betweenthe Cover Slide and the workpiece.

If a Crossjet is used, care must be taken to locate it in a position where the airflow does notdisrupt the gas shielding.

7.7 Material WeldingLaser welding is a highly controllable fusion welding process. This process can be used to weldall metallic materials that are weldable using conventional welding processes.

Materials welded using high power Lasers are as follows:

Material Information

Zinc-coatedautomotive steel

Generally weldable with coating thickness up to 15µm/side if a joint gapis introduced to allow vaporising zinc to escape.

Carbon and Carbon-Manganese steels

Readily weldable up to 3mm without gas shield and in greater thicknesswith gas shield. May encounter cracking in steels with high Carboncontent.

Stainless steel andNickel-based alloys

Readily weldable with good gas shield. Cleaning and degreasing priorto welding often necessary.

Titanium andTitanium alloys

Readily weldable but requires excellent gas shielding

Aluminium andAluminium alloys

Pure and lean alloys are readily weldable with good gas shielding. 5000and 6000 series alloys may require filler wire in addition to overcomecracking.

Copper and Copperalloys

Generally weldable although combination of high reflectivity andthermal conductivity can cause problems. Bismuth- and alloyscontaining Lead can crack.

Some of the benefits of Laser welding such as high welding speed and minimum workpiecedistortion, are maximised when the Laser is used to make autogenous welds (i.e. with nomaterial addition in the form of filler wire, powder, shim etc.). However, some materials requirematerial addition to give high quality welds with acceptable properties.

At the high power level of the JK501/401 Series Laser, welding with material addition is readilyachievable although welding speeds are generally lower than with autogenous welding.

Some highly reflective materials can be difficult to weld because the majority of the Laser beamis reflected from the material surface preventing heating and melting. This is the case with Gold,Silver, their alloys and with some Copper alloys.

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With all materials, it is important that surfaces to be welded are free of oxidation, oil, grease,cutting fluid etc. Contamination of this kind is likely to result in porosity and other defects in theweld. Appropriate cleaning procedures must be applied to remove contamination from surfacesto be welded.

7.8 Cutting in CW ModeFocusing the Laser beam onto the surface of the material to be cut at an intensity sufficient toensure material heating, melting and vaporisation achieves cutting. A co-axial assist gas isapplied through the cutting nozzle which directs the gas at the beam/material interaction point. ,A continuous cut can be produced along a predetermined path by moving the workpiece relativeto the Laser beam.

The assist gas facilitates removal of molten material from the cut. In a given material, the LaserAverage Power, the cutting speed and the type of gas used control the thickness of material thatcan be cut. The width of cut is controlled by the focused spot size.

Increased power (with other parameters constant) increases the thickness of material that canbe cut.

Increased Laser power decreases cutting speed.

Increased focused spot size increases the width of cut.

Cutting performance is normally presented in the form of material thickness versus cuttingspeed graphs.

7.9 Cutting in Modulation ModeWhen cutting, the square wave pulsed output of the Laser is used to improve the piercingspeed. When starting a cut, square wave also improves the cut quality for thick materials. It alsoimproves cut quality when cutting at an angle to the surface of the part.

Pulsing improves the cutting of high heat conductivity metals such as Aluminium, by using thepeak intensities to overcome energy lost to conductivity and reflectivity.

Modulation also improves the edge quality of the cuts where intricate features are to betrepanned and Laser power reduced while maintaining a high intensity focus.

7.10 Cutting FixturesControl of the material position relative to the Laser beam is achieved using Jigs and Fixtures.Good position control is essential if good quality, consistent results are to be achieved.

If flat sheet materials are to be processed, the simplest form of control is by clamping thematerial in a fixed plane relative to the Laser beam. Refer to Figure 25 which shows two simplearrangements, clamping from above or below.

Experience has shown that the clamping method used should ensure that the parts to bewelded are held with the joint ±0.5mm relative to the Laser beam focus position.

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7.11 Cutting Assist GasThe co-axial assist gas used in Laser cutting facilitates removal of molten material from the cut.

Both Air and Oxygen are used in Laser cutting and contribute additional heat during the cuttingof steels. This is due to an exothermic reaction that occurs between the Oxygen in the assistgas and the Iron in the steel. This additional heat increases both cutting depth and cuttingspeed.

Oxygen bearing assist gas pressure is required to be optimised to achieve best results.

Excessive pressure can produce uncontrolled burning of the cut edge. This may result in a cutof varying width.

Insufficient pressure may lead to failure to cut through the material and possible nozzleblockage or optic damage.

A good starting pressure for cutting with Air or Oxygen assist gas is 3-5 bar (measured close tothe nozzle).

Gases with high Oxygen purity can offer an increase in performance of between 10 and 20%;however the benefits of increased performance must be balanced against the correspondingincrease in the cost of the gas.

7.12 Inert Assist GasesInert gases such as Argon or Nitrogen can be used as assist gases during cutting. UnlikeOxygen-bearing gases, they do not contribute additional heat to the process. Their use isprimarily to assist in the removal of molten material and prevent oxidation of the cut faces. Thisis important for applications where the cut faces are to be welded subsequently without theneed for further edge preparation and cleaning.

At very high pressures, e.g. ~15bar, cuts free from dross can be produced which require nofurther cleaning. Careful optimisation of gas pressure and cutting speed is required to achievethis condition. It is essential to ensure that the cutting nozzle and gas system are adequate tohandle such high pressures safely.

7.13 Cutting Different MaterialsA wide range of metallic materials can be cut successfully using the JK501/401 Series Laser.

For processing guidelines, please refer to GSI Lumonics.

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7.14 Process Preparation

7.14.1 Choice of Focused Spot Size

High welding and cutting speed is normally desirable from a productivity viewpoint but, in someapplications, the use of short focal length lenses to achieve high speeds can present problems.

The following factors need to be considered when choosing focused spot size:

7.14.2 Part/Focus Position

The process tolerance to variations in Laser focus point is a function of the depth of focus, i.e.the distance above and below the actual focus position over which the focused spot diameter isapproximately constant. The depth of focus is proportional to lens focal length. If the position ofthe part is within the depth of focus, the process will be consistent and reproducible.

If parts cannot be positioned accurately relative to the focus position of the beam because, forexample, part to part dimensional variations are significant or low accuracy work handling isused, then it may be necessary to use a longer focal length focusing lens. This will increaseprocess tolerance but will limit maximum processing speed.

7.14.3 Weld Shape, Cut Width and Joint Strength

Processing using small focused spot size at high speed results in production of narrow welds orcuts of small cross-sectional area.

When welding, this increases the need to ensure accurate alignment of the joint to be weldedand the focused Laser beam. If this is difficult, for example because of part to part variations orlow accuracy work handling, a larger spot size may be necessary resulting in production of awider weld. This allows a greater tolerance to alignment of the focused beam with the joint.

When cutting this produces a narrow cut (or kerf) which increases the need to ensure accuratefocused Laser beam alignment with the desired cut path. A wider cut, produced using a largerfocused spot size, may be more tolerant to part alignment.

Additionally, producing a narrow cut can present problems as scrap material, for examplecircular slug resulting from cutting a circular aperture, may not drop cleanly away because oflimited clearance. A wider cut, produced using a larger focused spot size, would increaseclearance and improve the chances of scrap parts dropping away cleanly.

With overlap and overlap T-welds, the production of a narrow weld results in limited weld widthat the joint interface. For structural overlap welds, it is normally necessary for weld width at theinterface to be greater than the material thickness. To produce a weld of suitable width, a largerfocused spot size may be required at the expense of welding speed.

7.14.4 Cover Slide Damage

The use of a short focal length lens is not advisable when welding or cutting materials thatgenerate high levels of fume and spatter. Fume and spatter can impinge on the Cover Slide

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below the Focusing Lens and cause a reduction in Laser beam transmission through it.Eventually this will result in overheating and fracture of the Cover Slide and possible irreparabledamage to the Focusing Lens.

Materials that may generate high levels of fume and spatter are Zinc coated steels and somehigh Magnesium content Aluminium alloys.

7.14.5 Processing Access

Processing access is affected by the choice of focusing lens focal length. The Laser beamdiameter after it has passed through the Recollimating Lens in the Focus Head is constant;however a short focal length Focusing Lens results in greater focused beam cone angle than along focal length Focusing Lens

The greater cone angle can limit beam access that could be a problem when, for example,welding in the bottom of a groove or between closely packed tubes. In such cases, it may benecessary to use a longer focal length focusing lens that results in a smaller cone angle.

7.14.6 Finding Focus

Nearly all welding and cutting is carried out with the Laser beam focused on the materialsurface. Before setting up a new process, it is important to know the accuracy of the focus beamposition.

The focus beam position is a fixed distance from the end of the Focus Head, i.e. the cover slideposition.

Refer to Section 5 for details.

7.14.7 Welding

7.14.7.1 Gas Shielding

When preparing a welding process, it is important to establish a gas shield/gas flow rate thatachieves effective shielding and is reliable for production use. Care in setting up gas shielding atthis point can prevent time consuming and costly problems before production welding starts.

Because of the wide range of materials/components and different End User requirements, thereare few rules that apply to setting up effective gas shielding.

However, the following points should be considered when setting up gas shielding:

• Turn on shielding gas on prior to initiating a weld in order to purge the gas deliverysystem and displace air from the weld region.

• A pipe fitted to deliver shielding gas to the weld must be positioned ahead of thewelding point and arranged to direct shielding gas at the point of beam / materialinteraction. Pipe to be angled at ~45º to the surface of the part being welded

• The distance from the end of the pipe to the beam material interaction point must be farenough to prevent the pipe being damaged by heat from the process but close enoughto ensure good coverage of the weld. Normally, a distance of 10-20mm is suitable.

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• Gas flow rate should be adjusted to the minimum value necessary to achieve therequired shielding effect. Normally the requirement is to prevent visible oxidation of thesurface, i.e. to produce a bright, shiny weld topbead. This is achievable with flow ratesof 10-20 litres/minute when using a pipe or 30-50 litres/minute when using a Gas Shoe.

• Ineffective shielding does not necessarily indicate insufficient gas flow rate. Excessivegas flow rate can cause turbulence in the weld area and result in entrapment of air thatleads to oxidation.

• When a weld is terminated, it may be necessary to stop the workpiece or Focus Headmotion and continue the supply of shielding gas for a few seconds to prevent oxidationof the hot solidified metal at the weld termination point.

• Care must be taken to prevent interaction between the Air Knife, used to protect theCover Slide from fume and spatter, and the flow of shielding gas.

• Many variables influence the effectiveness of gas shielding. Take note of all aspects ofsuccessful set-ups so that they can be reproduced if necessary.

7.14.7.2 Crossjets

It is important to set up a Crossjet that prevents fume and spatter impinging on the Cover Slide.

It is normally sufficient to use a Crossjet positioned to blow a high velocity jet of air across thegap between the Cover Slide and the workpiece.

When setting up a crossjet, the following points should be considered:

• Some materials produce more fume and spatter than others. Materials that produce alot of fume and spatter for example, Zinc-coated steels and some Aluminium alloys,warrant additional attention on setting up a Crossjet.

• The optimum Crossjet position between the workpiece and The Cover Slide requiresinvestigation for each welding task. If the Crossjet is placed too close to the workpiece,the jet of air can interact with the flow of shielding gas and reduce shieldingeffectiveness. If it is placed too close to the Cover Slide, the crossjet may be ineffectivein preventing fume and spatter hitting the Cover Slide.

• The optimum rate of airflow for Crossjet use requires investigation for each weldingtask. If the rate is too low, the Crossjet will be ineffective. If the rate is too high, anexcessive volume of air will be used and the process will become very noisy.

• The Crossjet should be positioned so deflected fume and spatter is not blown ontoother equipment in the workstation.

• The Crossjet air supply must be switched on prior to initiation of welding to allow steadystate flow conditions to be achieved. Crossjet air supply must be left running for aperiod after weld termination. This prevents fume in the atmosphere from beingdeposited on to the Cover Slide.

• The air supplied to the Air Knife is to be clean and free from moisture and oil.

7.14.7.3 Part Fit-up

Laser welding is a high precision fusion welding process that is often carried out withoutmaterial addition in the form of wire, powder and shim.

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This means that the parts to be Laser welded have to fit closely together to achieve successfulwelds.

Generally, parts should fit together so that any gap remaining between them is less than10% ofthe thickness of the thinnest material being welded. If greater gaps exist than it is likely that theweld produced in an overlap configuration will exhibit undercut (a concave underbead and/ortopbead, see Figure 26). It is possible that with inadequate fit-up the Laser beam will melt thetop and bottom plates in a lap joint but fail to join them together. It is possible that, in a buttweld, no weld will be produced as the focused Laser beam will pass through the joint gapwithout melting the material.

Figure 26 – Undercut Overlap Weld

It is important when setting up a new process to ensure that the parts to be welded have adimensional accuracy suitable to ensure good fit-up and that the fixing of parts into the jigs isaccurate.

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7.14.8 Cutting

7.14.8.1 Nozzle Set-up

The quality of cut, ultimate cutting speed and consistency of cutting performance in differentcutting directions are all dependent on the positioning of the cutting nozzle relative to the Laserbeam focus and the workpiece surface.

When setting up for Laser cutting, the following points should be considered:

• Optimum results will be achieved with the beam accurately positioned to pass centrallydown the nozzle and to exit the nozzle aperture concentrically. Nozzle position shouldbe adjusted to achieve this.

• The optimum position of the Laser beam focus below the nozzle is dependent onmaterial type and thickness, assist gas type and pressure and cut quality requirements.For most cutting tasks, the Laser beam focus position should be ~1mm below the endof the nozzle. The workpiece should be positioned coincident with the Laser beamfocus position. (The distance between the end of the nozzle and the workpiece istermed Stand-off).

• Cutting performance is highly dependent on cutting nozzle condition. Nozzles damagedby workpiece contact, contamination or overheating due to beam clipping should bereplaced.

7.14.8.2 Assist Gas

Cut quality and cutting speed are dependent on gas type and pressure

When setting up a cutting process, the following points should be considered:

• If using Oxygen gas assist, great care must be taken to optimise gas pressure toachieve high cut speed and quality. Optimum pressure is dependent on material typeand thickness, nozzle outlet diameter, and Stand-off. For most cutting tasks in steeland stainless steel, gas pressure is ~4 bar.

• If using inert gas assist, it may be necessary to cut with the Laser beam focus positionbelow the material surface to produce a cut with minimum taper. In this case, thenozzle position will require adjustment to maintain a ~1mm Stand-off.

• If using inert gas assist, great care must be taken to optimise gas pressure to achievegood cut quality free from oxidation. Optimum pressure is dependent on material typeand thickness, nozzle outlet diameter and Stand-off. For most cutting tasks, the gaspressure is ~8 bar, although the use of significantly higher pressures may be needed ifcuts free from dross are required.

• Switch on assist gas prior to commencement of cutting to allow purging of the gasdelivery system and establish steady state flow conditions.

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7.15 Optimisation

7.15.1 Use of Ramp Up and Ramp Down

Optimisation of Ramp Up and Ramp Down is important in welding applications where weldinitiation and termination points form an integral part of the welded component and must be freeof defects and/or of good surface appearance

Ramp Up time is defined in the Parameter Set Table (refer to Section 3.7.4.1) and sets the timefor the Laser to reach the set Laser power output when switched ON from READY. Whenwelding, the Ramp Up feature can be used to increase weld penetration in a controlled mannerat the start of the welding to fade in the weld smoothly.

Ramp Down time sets the time for the Laser to reach zero when switched from ON to READY.When welding, the Ramp Down feature can be used to decrease weld penetration gradually in acontrolled manner at the end of welding to fade out the weld smoothly. The Ramp Down facilityis used when welds are made in circular components to ensure smooth fade out in the area ofweld overlap.

Optimum settings depend on material type and thickness, welding power and speed and otherprocessing parameters as well as the precise quality and appearance requirements of thefinished component.

Optimum settings are best defined by conducting structured processing trials at different RampUp and Ramp Down times on representative components.

7.16 Record KeepingEstablishing a Laser process for use in a production welding or cutting application requiresmany parameters to be set and adjusted. The goal is to develop an optimised and tolerantprocess that will prove reliable in use and allow the speed and quality benefits offered by Laserprocessing to be realised.

In order for such a process to be established and to ensure it can be repeated, it is importantthat accurate process records are kept and maintained.

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8. SparesThe complete Spares List is annotated on the following pages.

The Spares List is divided into major assemblies. Sub-assemblies and components areannotated in the Service and Maintenance Manual.

Please contact GSI Lumonics for further details or for ordering Spares.

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Laser Head

Location Item Description Part No. MaintenanceLevel

LASER HEAD Rear Mirror Assembly PA035530X 2

Optic only 1222159YA 3

Gaitering Gaiter Set (INVARIANT) MA039000X 2

Gaiter Set (VARIANT) MA039020X 2

Pump Chamber JK501 Assembly (No Lamps) PC035900X 2

JK401 Assembly (No Lamps) PC035890X 2

Top Reflector 3

Flashlamp PA024000X 1

O-Ring Pumping Chamber Kit MA035910K 1

JK501 Rod & Flow Tube Assembly PC035930X 2

JK401 Rod & Flow Tube Assembly PC035940X 2

Earth Pin 1

Lamp Lead Assembly 2

Front Mirror Optic 12220110A 2

BET JK501 Assembly MC038970X 2

JK401 Assembly MC038980X 2

BET (VARIANT) Relay 1 JK401 PC039920X 2

Relay 1 JK501 PC039930X 2

Energy Monitor Assembly EH113260X 2

Turning Mirror Assembly PC039070X 3

Shutter Assembly PC022730X 3

Beam Dump Assembly PG039060X 2

Window 12210210A 2

LASER HEAD Fibre Receivers Fibre Receiver Single-way ML034360X 2

Fibre Focus Lens Housing MC035790X 2

JK401 Lens Cell PC039310X 2

JK501Lens Cell PC039300X 2

Temperature Switch 19A128001 3

JK401 Lens Cell (VARIANT) PC039920X 2

JK501 Lens Cell (VARIANT) PC039930X 2

PIPA Fibre 5m x 600µm PA035160X 2







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FOCUS HEAD PIPA Focus Head Straight,160mm Recollimating Lens PL035470X

PIPA Focus Head Straight,200mm Recollimating Lens

PL034410X

PIPA Focus Head Right Angle160mm Recollimating Lens

PL035490X

PIPA Focus Head Right Angle200mm Recollimating Lens

PL035500X

PIPA Focus Head Right Angle + Camera160mm Recollimating Lens

PL036490X

PIPA Focus Head Right Angle + Camera200mm Recollimating Lens PL037100X

Fibre BendlockAssembly ML036240X

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Main Cabinet Left-hand Bay


COOLER Cooler ControlModule

EF111550X 2

Pump 50 Hz Complete Assembly MF040590X 2

Pump 60 Hz Complete Assembly MF040600X 2

Filter Body Assembly (No Filter) MF037810K 1

Carbon Paper 550001801 1

De-ioniserBody

Assembly (No De-ioniserContainer)

MF037820K 1

ResinContainer

Assembly (No De-ioniser Material) 550000111 1

Resin Material M7357060X 1

Flow Controller 520003301 2

HeatExchanger

Assembly MF039541C 2

Temperature Switch (50C) 19A100201 2

Flow Meter EF104910X 2

Level Indicator EF111950X 2

Water Analar Grade 3 1D0M00801 1

Tank Assembly MF034781D 2

Level Sensor EF111950X 2

Conductivity Probe EF111930X 2

Temperature Probe. EF111940X 2

Control Valve (RED) MF037420X 2

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Main Cabinet Right-hand Bay


MAIN CABBAY 2

Boost Assembly E81Z3220X 2

Lamp Driver Assembly EK113990X 2

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End Bay


POWERDISTRIBUTION

SurgeSuppressor

Plug in – 320V 85D884501 1

3PH Relay KV1 – Monitoring Relay 1GU012001 2

3PH Contactor QF1 – To Transformer (1.6-2.5A) 18BC25001 2

3PH Contactor QF2 – To Pump (1-1.6A) 18BC16001 2

Contactor KM1 – Pump Overload 1G0C02001 2

Hour Meter PT1 – 110VAC 620004001 2

Circuit Breaker QF3/QF4 18BD04711 2

24Vdc PSU GS1 – General 24Vdc 340004501 2

E/Stop unit KA1 – 24Vdc 1GSC40001 2

Relay KA2 – 24Vdc 1G0C00601 2

PCB AP2 – Mains Monitor EK110730X 2

PCB AP3 – Digital Interlock EE111440X 2

Transformer T1 – 800VA 110VAC 1F0BF9001 2

Node A1 – SLNI (RS422) 230006311 2

PCB AP1 – Interface Card EK113760X 2

CONTROL Control Rack Assembly (No PCB’s) EK111370X 2

Power Supply Card EK111410X 2

Digital I/O Card EK111320X 2

Analogue I/O Card EK111270X 2

Laser Control Card (LCC) EK111200X 2

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End Bay - Door


SHUTTERCONTROL

24Vdc PSU GS1 – General 24Vdc 340004501 2

PCB BDI Card EC108940X 2

PCB Beam Node Card EC107040X 2

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Consumables

Item Description Part No.

Spare Fuse Set TBR

O-Ring Set TBR

Spare Bulb Set TBR

Safety Labels TBR

jk501/401 nd: yag industrial laser user...

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