fiber optic module

Fiber Optic Module

Part 108 104B

NORDSON CORPORATION � AMHERST, OHIO � USA

� 1997 Nordson CorporationAll rights reserved

108 104BIssued 4/97

Manual 17-20

Nordson Corporation welcomes requests for information, comments and inquiries about its products.

Address all correspondence to

Nordson Corporation555 Jackson StreetAmherst, OH 44001

Notice

This is a Nordson Corporation publication which is protected by copyright. Original copyright date 1990. No part ofthis document may be photocopied, reproduced, or translated to another language without the prior written consent

of Nordson Corporation. The information contained in this publication is subject to change without notice.

Trademarks

100 Plus, Blue Box, ChromaFlex, CleanSleeve, CleanSpray, Control Coat, Cross-Cut, Easy Coat, Econo-Coat,Excel 2000, Flow Sentry, Isocoil, Isocore, Iso-Flo, Nordson, the Nordson logo, PRX, Pro-Flo, RBX, Ready-Coat,

Rhino, Select Coat, Select Cure, Shur-Lok, Smart Spray, System Sentry, Thread Coat, Tribomatic, and Versa-Sprayare registered trademarks of Nordson Corporation.

CPX, CanWorks, Excel 2000, PowderGrid, Pulse Spray, SCF, Versa-Coat, Versa Screen, Package of Values, andSwirl Coat are trademarks of Nordson Corporation.

Table of Contents i


108 104BIssued 4/97

Manual 17-20

Table of Contents

1. Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Safety Symbols 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Qualified Personnel 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Intended Use 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Installation 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. Operation 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7. Less-Obvious Dangers 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. Action in the Event of a System or Component Malfunction 1-8. . . . .

9. Maintenance and Repair 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10. Material and Solvent Precautions 1-10. . . . . . . . . . . . . . . . . . . . . . . . . . .

11. Disposal 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Theory 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Installation 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjusting the Fiber Optic Module 3-6. . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Operational Checkout 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Troubleshooting Chart 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Initial Disassembly 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Disassembly of the Fiber Optic Module 6-1. . . . . . . . . . . . . . . . . . . . . . .

4. Repair of the Fiber Optic Module 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety

Description

Installation

Operation

Troubleshooting

Repair

Table of Contentsii


108 104BIssued 4/97

Manual 17-20

1. Introduction 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Illustrated Parts List 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Fiber Optic Module 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Optic Cable Installation Kit 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Introduction 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fiber Optic Module 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fiber Optic Cable 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts

Specifications


Issued 11/95 A1EN–03–[SF–LIQD]–1

Section 1

Safety

Safety1-0


Issued 11/95A1EN–03–[SF–LIQD]–1

Safety 1-1



Section 1Safety

This section contains general safety instructions for using your Nordsonequipment. Task- and equipment-specific warnings are included in othersections of this manual where appropriate. Note all warnings and followall instructions carefully. Failure to do so may result in personal injury,death, or property damage.

To use this equipment safely,

� read and become familiar with the general safety instructionsprovided in this section of the manual before installing, operating,maintaining, or repairing this equipment.

� read and carefully follow the instructions given throughout this manualfor performing specific tasks and working with specific equipment.

� store this manual within easy reach of personnel installing, operating,maintaining, or repairing this equipment.

� follow all applicable safety procedures required by your company,industry standards, and government or other regulatory agencies.Refer to the National Fire Protection Association (NFPA) standard 33and to federal, state, regulatory agency, and local codes for rules andregulations covering installation and operation of spray systems.

� obtain and read Material Safety Data Sheets (MSDS) for all materialsused.

Become familiar with the safety symbols presented in this section. Thesesymbols will alert you to safety hazards and conditions that may result inpersonal injury, death, or property and equipment damage.

WARNING: Failure to observe this warning may result inpersonal injury, death, or equipment damage.

1. Introduction

2. Safety Symbols

Safety1-2



WARNING: Risk of electrical shock. Failure to observe thiswarning may result in personal injury, death, or equipmentdamage.

WARNING: Disconnect equipment from line voltage. Failure toobserve this warning may result in personal injury, death, orequipment damage.

WARNING: Risk of explosion or fire. Fire, open flames, andsmoking prohibited.

WARNING: Wear protective clothing, safety goggles, andapproved respiratory protection. Failure to observe may resultin serious injury.

WARNING: Hot! Risk of burns. Wear heat-protective clothing,safety goggles with side shields and/or heat-protective glovesdepending on the symbol shown.

WARNING: System or material pressurized. Relieve pressure.Failure to observe this warning may result in serious injuryor death.

WARNING: Injection. Do not point this device at yourself orother personnel. Failure to observe this warning may result inserious injury or death.

2. Safety Symbols (contd.)

Safety 1-3



CAUTION: Failure to observe may result in equipmentdamage.

CAUTION: Hot surface. Failure to observe may result inburns.

“Qualified personnel” is defined here as individuals who thoroughlyunderstand the equipment and its safe operation, maintenance, andrepair. Qualified personnel are physically capable of performing therequired tasks, familiar with all relevant safety rules and regulations, andhave been trained to safely install, operate, maintain, and repair theequipment. It is the responsibility of the company operating thisequipment to see that its personnel meet these requirements.

WARNING: Use of this equipment in ways other thandescribed in this manual may result in personal injury, death, orproperty and equipment damage. Use this equipment only asdescribed in this manual.

Nordson Corporation cannot be responsible for injuries or damagesresulting from nonstandard, unintended applications of its equipment.This equipment is designed and intended only for the purpose describedin this manual. Uses not described in this manual are consideredunintended uses and may result in serious personal injury, death, orproperty damage. Unintended uses may result from taking the followingactions:

� making changes to equipment that have not been recommended ordescribed in this manual or using parts that are not genuine Nordsonreplacement parts

� failing to make sure that auxiliary equipment complies with approvalagency requirements, local codes, and all applicable safety standards

� using materials or auxiliary equipment that are inappropriate orincompatible with your Nordson equipment

� allowing unqualified personnel to perform any task

2. Safety Symbols (contd.)

3. Qualified Personnel

4. Intended Use

Safety1-4



Read the installation section of all system component manuals beforeinstalling your Nordson equipment. A thorough understanding of systemcomponents and their requirements will help you to install this equipmentsafely and efficiently.

WARNING: Failure to follow these safety procedures can resultin personal injury or death.

� Allow only qualified personnel to install Nordson equipment.

� Use only approved equipment. Using unapproved equipment in anapproved system may void agency approvals.

� Make sure all equipment is rated and approved for the environment inwhich you are using it.

� Follow all instructions for installing components and accessories.

� Install all electrical, pneumatic, gas, and hydraulic connections tolocal code.

� Install locking, manual, shutoff valves in the air supply lines to thesystem. This allows you to relieve air pressure and lock out thepneumatic system before undertaking maintenance and repairs.

� Install a locking disconnect switch or breaker in the service line aheadof any electrical equipment.

� Use only electrical wire of sufficient gauge and insulation to handlethe rated current demand. All wiring must meet local codes.

� Ground all electrically conductive equipment. Ungroundedconductive equipment can store a static charge which could ignite afire or cause an explosion if a hot spark is discharged.

� Route electrical wiring, electrostatic cables, and air hoses and tubingalong a protected path. Make sure they will not be damaged. Do notbend electrostatic cables around a radius of less than 6 in. (152 mm).

� Install safety interlocks and approved, fast-acting fire detectionsystems. These shut down the spray system and any flammableliquid supply if a ventilation or electrical problem occurs, a fire isdetected, or other emergency situation develops.

5. Installation

Safety 1-5



� Make sure the spray area floor is conductive to ground and that theoperator’s platform is grounded.

� Use only designated lifting points or lugs to lift and move heavyequipment. Always balance and block loads when lifting to preventshifting. Lifting devices must be inspected, certified, and rated for agreater weight than the equipment being lifted.

� Do not use unapproved fluid hoses. Solvents may cause them todeteriorate rapidly which may allow flammable or pressurized materialto escape.

� Protect components from damage, wear, and harsh environmentalconditions.

� Allow ample room for maintenance, material supply container drop-offand loading, panel accessibility, and cover removal.

� Protect equipment with safety devices as specified by applicablesafety regulations.

� If safety devices must be removed for installation, install themimmediately after the work is completed and check them for properfunctioning.

Only qualified personnel, physically capable of operating the equipmentand with no impairments to their judgement or reaction times, shouldoperate this equipment.

Read all component manuals before operating this equipment. Athorough understanding of system components and their operation willhelp you operate the system safely and efficiently.

� Use this equipment only in the environments for which it is rated. Donot operate this equipment in humid, flammable, or explosiveenvironments unless it has been rated for safe operation in theseenvironments.

� Before starting this equipment, check all safety interlocks,fire-detection systems, and protective devices such as panels andcovers. Make sure all devices are fully functional. Do not operate thesystem if these devices are not working properly. Do not deactivateor bypass automatic safety interlocks, locked-out electricaldisconnects, or pneumatic valves.

5. Installation (contd.)

6. Operation

Safety1-6



� Know where EMERGENCY STOP buttons, shutoff valves, and fireextinguishers are located. Make sure they work. If a componentmalfunctions, shut down and lock out the equipment immediately.

� Before operating, make sure all conductive equipment, objects beingsprayed, and fluid containers are connected to a true earth ground.

� Never operate equipment with a known malfunction or leak.

� Never point handguns or applicator nozzles at yourself or otherpersons.

� Never touch exposed electrical connections on equipment while thepower is ON.

� Do not operate the equipment at pressures higher than the ratedmaximum working pressure of any component in the system.

� Shut off moving equipment before taking measurements or inspectingworkpieces.

� Know the pinch points, temperatures, pressures, and materialcomposition for all equipment that you are working with. Recognizepotential hazards associated with these and exercise appropriatecaution.

� Wear shoes with conductive soles, such as leather, or use groundingstraps to maintain a connection to ground when working with oraround electrostatic equipment.

� Do not wear or carry metallic objects (jewelry or tools) while workingwith or around electrostatic equipment. Ungrounded metal can storea static charge and cause harmful shocks.

� Maintain skin-to-metal contact between your hand and the gun handleto prevent shocks while operating manual electrostatic spray guns. Ifwearing gloves, cut away the palm or fingers.

� Shut off electrostatic power supplies and ground gun electrodesbefore making adjustments to powder spray guns.

� If you notice electrical arcing in a spray area, shut down the systemimmediately. An arc can cause a fire or explosion.

� Keep parts of the body or loose clothing away from rotating parts.Remove personal jewelry and cover or tie back long hair.

6. Operation (contd.)

Safety 1-7



� Wear National Institute of Occupational Safety and Health (NIOSH)approved respirators while operating spray equipment and whenperforming maintenance and cleaning tasks.

� Wear eye protection when operating spray equipment.

� Wear gloves and protective clothing to protect your skin frommaterials.

� Keep paint pumps, pressure pots, and containers of flammablecoating materials or solvents far enough away from spray booths toprevent their inclusion in a booth fire.

� Do not smoke in the spray area. A lit cigarette could ignite a fire orcause an explosion.

� Treat all high-pressure fittings and hoses as if they could leak.High-pressure compressed air can be injected under the skin andcause serious injury or death.

� Do not use materials that will corrode the equipment.

� Do not attempt to operate electrical equipment if standing water ispresent.

� Wash exposed skin frequently with soap and water, especially beforeeating or drinking. Do not use solvents to remove coating materialsfrom your skin.

Operators should also be aware of less-obvious dangers in the workplacethat often cannot be completely eliminated:

� exposed surfaces on the equipment which may be hot or have sharpedges and cannot be practically safeguarded

� electrical equipment which may remain energized after the equipmenthas been shut off

� vapors and materials which may cause allergic reactions or otherhealth problems

� automatic hydraulic, pneumatic equipment, or mechanical parts thatmay move without warning

� unguarded, moving mechanical assemblies

6. Operation (contd.)

7. Less-Obvious Dangers

Safety1-8



Do not operate a system that contains malfunctioning components. If acomponent malfunctions, turn the system OFF immediately.

� Disconnect and lock out electrical power. Close and lock outhydraulic and pneumatic shutoff valves and relieve pressures.

� Allow only qualified personnel to make repairs. Repair or replace themalfunctioning component according to instructions provided in itsmanual.

Allow only qualified personnel to perform maintenance, troubleshooting,and repair tasks. Only persons who are properly trained and familiar withNordson equipment are permitted to service this equipment.

� Always wear appropriate protective clothing and use safety deviceswhen working on this equipment.

� Follow the recommended maintenance procedures in your equipmentmanuals.

� Do not service or adjust any equipment unless another person trainedin first aid and CPR is present.

� Disconnect, lock out, and tag electrical power at a disconnect orbreaker in the service line ahead of electrical equipment beforeservicing.

� Relieve air and fluid pressures before servicing equipment. Followthe specific instructions in this manual.

� Use only genuine Nordson replacement parts. Using unapprovedparts or making unapproved modifications to equipment may voidagency approvals and create safety hazards.

WARNING: Note the flash point of the cleaning solvent used.Only use controlled methods and equipment, such astemperature-controlled or explosion-protected heaters, to heatcleaning solvent. Observe explosion-prevention regulationsand follow applicable safety instructions.

� Refer to the MSDS before using solvents to clean this equipment.The MSDS will provide use, storage, and disposal information aboutthe solvent. Read this information carefully and follow instructions.

8. Action in the Event of aSystem or ComponentMalfunction

9. Maintenance and Repair

Safety 1-9



� Never use an open flame to clean the unit or components of the unit.

� Do not store flammable materials in the spray area or room. Keeppaint pumps, pressure pots, and containers of flammable coatingmaterials or solvents far enough away from spray booths to preventtheir inclusion in a booth fire. If a fire or explosion occurs, flammablematerials in the area will increase the chances and the extent ofpersonal injuries and property damage.

� Make sure that the room where you are working is sufficientlyventilated. Avoid breathing vapors over prolonged periods of time.

� Check interlock systems periodically to ensure their effectiveness.

WARNING: Operating faulty or electrostatic equipment ishazardous and can cause electrocution, fire, or explosion.Make resistance checks part of your periodic maintenanceprogram.

� Check all ground connections periodically with a megohm meter.Resistance to ground must not exceed one megohm. If sparks orarcing occur, shut down the system immediately.

� Connect all disconnected equipment ground cables and wires afterservicing the equipment. Ground all conductive equipment.

WARNING: Service lines connected to panel disconnectswitches will still be energized unless power is shut off atanother disconnect ahead of the panel. Make sure the power isoff before servicing. Wait 5 minutes for capacitors to dischargeafter shutting off the electrical power.

� Turn off the electrostatic power supply and ground the gun electrodebefore adjusting or cleaning the nozzles, fluid tips, or air caps.

� If a “power on” test is required, perform the test carefully and thenshut off and lock out power as soon as the test is over.

� Never troubleshoot the power supply without first disconnecting allexternal power supplies and discharging the high-voltage capacitorswith an insulated screwdriver.

� Ground electrodes and electrostatic cable ends before touching them.

9. Maintenance and Repair (contd.)

Safety1-10



� Do not attempt to service electrical equipment if there is standingwater present. Do not service electrical equipment in a high-humidityenvironment.

� Use tools with insulated handles when working with electricalequipment.

� Keep high-voltage connection points clean and insulated withdielectric grease or oil.

� Do not attempt to service a moving piece of equipment. Shut off theequipment and lock out power. Secure equipment to preventuncontrolled movement.

WARNING: Hot! Risk of burns. Wear heat-protective clothing,eye protection with side shields and/or heat-protective gloves.

Heated materials may cause severe burns on contact. Remember thatsome materials, even solid materials, may retain heat for some time. Ifyou are burned by a heated material, immediately cool the affected skinwith lots of cool, clean water. Do not try to remove hot, melted materialfrom the skin. Seek immediate medical attention.

High-pressure fluids, unless they are safely contained, are extremelyhazardous. A jet of high-pressure fluid can act like a knife or needle,penetrate skin and muscle, and inject itself into your body. Injected fluidscan cause toxic poisoning.

Do not treat an injection injury as minor. Seek medical care immediately.Inform the medical staff at the hospital that you have an injection injuryand identify the fluid that was injected. If possible, give the doctor copiesof the MSDS for the injected fluid and for any additives, such as solvents,that are in the injected fluid.

Also, Nordson recommends that you carry a National Safety EquipmentManufacturers Association (NSEMA) wallet card to give to emergencymedical staff in the event of an injection injury. These cards are suppliedwith the equipment. Additional cards are available free from NordsonCorporation.

9. Maintenance and Repair (contd.)

10. Material and SolventPrecautions

Safety 1-11



WARNING: Injection hazard. Do not go near a known leak in ahose or fitting, and stay clear of all spray nozzles or orifices. Donot point an applicator at yourself or other personnel. Thehigh-pressure fluid stream can penetrate skin and inject fluidinto the body causing serious injury or death.

To prevent an injection injury, take some basic safety precautions whenoperating your equipment.

� Always handle spray applicators carefully. Do not point a pressurizedgun at yourself or other personnel.

� Never place hands, fingers, or other parts of your body directly over aspray nozzle or in front of a leak in a high-pressure system.

� Never “back-flush” the nozzles. Blocking a nozzle causes thehigh-pressure fluid to reverse direction and can lead to an injectioninjury.

� Always relieve system pressure before servicing equipment. Triggerall applicators and bleed off system pressure.

Halogenated hydrocarbon solvents can cause an explosion when usedwith aluminum components in a pressurized fluid pumping system(pumps, heaters, filters, valves, spray guns, and tanks). The explosioncould cause serious bodily injury, death, or substantial property damage.No available stabilizers will prevent this violent reaction from happening.

WARNING: Never use halogenated hydrocarbon solvents toclean aluminum parts or to flush any system. Cleaning agents,coatings and paints, or adhesives may contain halogenatedhydrocarbon solvents. Obtain and read the MSDS for eachmaterial and solvent being used.

� Use nonhalogenated solvents.

� Contact your solvent supplier to determine whether your existingmaterials and solvents contain halogenated hydrocarbons or to obtaina suitable, nonhalogenated hydrocarbon solvent for cleaning andflushing your system.

10. Material and SolventPrecautions (contd.)

Safety1-12



� See Table 1-1. Check the labels on your solvent containers.Halogenated hydrocarbon solvents can be recognized if any of thefollowing elements are listed in the name of the product or as aningredient:

Element Symbol Prefix

Flourine F “Flouro-”

Chlorine Cl “Chloro-”

Bromine Br “Bromo-”

Iodine I “Iodo-”

If you are now using halogenated hydrocarbon solvents in pressurizedsystems with aluminum components, perform the following steps:

� Pump the system empty, shut off the pumps, and relieve the systempressure.

� Disassemble and inspect the system components. Replace anydamaged or corroded parts.

� Thoroughly clean all noncorroded parts with nonhalogenatedhydrocarbon.

� Contact your coatings, solvent, or adhesive supplier for anonhalogenated solvent to thoroughly flush the entire system beforeoperating it.

� If you must continue to use halogenated hydrocarbon solvents,consult your Nordson representative about compatible Nordsoncomponents.


Safety 1-13



Table 1-1 Solvents Containing Halogenated Fluids

Chlorinated Solvents Iodinated Solvents Brominated Solvents Fluorocarbon Solvents

Carbon Tetrachloride Ethyl Iodide Ethylene Dibromide Dichlorofluoromethane

Chloroform Methyl Iodide Methyl Bromide Trichlorofluoromethane

Ethylene Dichloride N-butyl Iodide Methylene Chlorobromide Freon

Methylene Chloride Propyl Iodide

1-1-1 Trichloroethane

Monochlorobenzene

Orthodichlorobenzene

Perchloroethylene

Trichloroethylene

Dispose of equipment and materials used in operation and cleaningaccording to your local regulations.


11. Disposal

Safety1-14




108 104BIssued 4/97

Manual 17-20

Section 2

Description

Description2-0


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Manual 17-20

Description 2-1


108 104BIssued 4/97

Manual 17-20

Section 2Description

See Figure 2-1. The Nordson Fiber Optic Module provides a safe,accurate, turbine speed readout for a Nordson Rotary Atomizer.

The Fiber Optic Module is available in either an automatic or manualversion. The automatic version provides speed feedback to a controldevice which monitors and controls the speed of the rotary atomizer. Themanual version simply outputs a speed signal which may be used todisplay the speed of the atomizer.

Both versions employ a fiber optic cable and fiber optic photoelectricsensor. The fiber optic cable is 40 feet long, allowing the fiber opticmodule to be mounted outside the spray area.

The fiber optic photoelectric sensor transmits and receives the opticsignal and converts the optic signal to an electrical signal. The automaticversion of the Fiber-Optic Module also employs a divide-by-four printedcircuit board which modifies the output of the fiber optic photoelectricsensor so that it may be used by a control device microprocessor.

1720001A

Fig. 2-1 Fiber Optic Module

1. Introduction

Description2-2


108 104BIssued 4/97

Manual 17-20

See Figure 2-2. The fiber optic cable consists of two separate fiber opticlines. One end of the fiber optic cable connects to the rear of rotaryatomizer turbine. The other end of the fiber optic cable connects to thefiber optic photoelectric sensor within the fiber optic module. One of thefiber optic lines transmits signal from an LED in the fiber opticphotoelectric sensor to the rotary atomizer turbine. The other fiber linereceives reflected light from the rotary atomizer turbine and carries itback to the fiber optic photoelectric sensor.

1720002A

Fig. 2-2 Functional diagram, Fiber Optic Module

2. Theory

Description 2-3


108 104BIssued 4/97

Manual 17-20

When turbine air is applied to the turbine within the rotary atomizer, theturbine begins to spin in a counter-clockwise direction. As the turbinespins, an internal wheel attached directly the turbine shaft also begins tospin. One half of this wheel is reflective, and the other half isnon-reflective. As the wheel spins, it alternately reflects or absorbs thelight transmitted to it from the optic fiber line which is connects to theLED. The light that reflects off the wheel’s reflective surface is picked upby the second fiber optic line and is carried to the fiber optic photoelectricsensor.

The light pulse converts into a 0 to 15 VDC square wave output by thefiber optic photoelectric sensor. This output, in the manual version of theFiber Optic Module, may then be used by a speed display device todisplay the turbine speed.

In the automatic version of the Fiber Optic Module, the output signal fromthe fiber optic photoelectric sensor is transmitted to the divide-by-fourprinted circuit board. This divides the frequency of the 0 to 15 VDCsquare wave output from the fiber optic sensor module by a factor of four.The divide-by-four board then transmits another 0 to 15 VDC differentialsquare wave output which is used by a microprocessor based device todisplay, control, or monitor the turbine speed.

2. Theory (contd.)

Description2-4


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Section 3

Installation

Installation3-0


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Installation 3-1


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Section 3Installation

This section provides installation procedures for the Fiber Optic Module.

See Figure 3-1.

1720003A

1

2 3

4

Fig. 3-1 Connecting the Fiber Optic Cable to the Rotary Atomizer

1. Sensor plate2. 1/4 -inch ferrule nut

3. Fiber optic cable 4. Stop

1. Introduction

2. Installation

Installation3-2


108 104BIssued 4/97

Manual 17-20

1. Remove the outer cover of the rotary atomizer.

2. Inspect the rear of the rotary atomizer turbine. Locate the sensorplate (1) installed during the installation of the rotary atomizer.Remove the 1/4 inch ferrule nut (2) on the sensor plate. A 1/4 inchplug may have been installed in the 1/4 inch ferrule nut. Remove theplug.

3. Slide the 1/4 inch ferrule nut on to the end of the fiber optic cable (3)until the nut comes in contact with the stop (4).

4. Remove the reducer bushing and elbow (5) from the port markedEXHAUST at the rear of the turbine.

5. Push the fiber optic cable (3) into the sensor plate (1). Adjust thecable stop to within 1/4 to 1/8 inch from the 1/4 inch ferrule nut (2) andtighten the ferrule nut.

6. Route the fiber optic cable (3) through the large “V” shaped openingat the rear of the rotary atomizer to install the cover properly.

WARNING: Do not install the fiber optic module in anenvironment classified as hazardous. Improper installation maylead to a catastrophic failure, including explosion, fire,destruction of property, or death.

CAUTION: Determine the desired length of the fiber optic cablebefore cutting the cable to the desired length. Provide aprotected path for the fiber optic cable (3). Install the fiber opticmodule so it will not be subject to undue stress or kinking. Thebend radius of the fiber optic cable must not be less than oneinch.

CAUTION: Do not clean any end of the fiber optic cable withsolvents. Solvent will damage the fiber optic core. Use a clean,soft cloth if cleaning is required.

7. In a non-hazardous environment, permanently install the fiber opticmodule to a rigid structure using 1/4 inch hardware.

8. Remove the outer cover of the fiber optic module, removing fourscrews, lockwashers and flat washers.

9. Using a sharp knife or similar tool, split 21/2 to 3 inches from theunterminated end of the cable.


Installation 3-3


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Manual 17-20

10. Insert the split fiber optic cable into two of the holes on the cutter asillustrated in Figure 3-2.

1720004A

Fig. 3-2 Cable cutter

11. Cut the fiber optic cable by firmly pushing down on the blade. Cut thecable in a smooth motion, otherwise the cut may be rough, resultingin lowered cable transmission ability. If the cut is rough, cut a littlemore off the end of the cable using another cutting hole. Do not useany cutting hole more than once. Cut the cable to the desired length,leaving 21/2 to 3 inches of split cable at the unterminated end.

1720005A

1

3

2

4

Fig. 3-3 Connecting the Fiber Optic Cable to the Fiber Optic Module


Installation3-4


108 104BIssued 4/97

Manual 17-20

12. See Figure 3-3. Pass the slit cable ends through the supplied liquidtight fitting (4) and cap (3).

13. Insert each cable end into the plug until the cable exits the plugapproximately 1/4 inch. Position the cable end into thetransmitter/receiver port (2) on the photoelectric sensor. Slide thecap (3) and plug (1) towards the photoelectric sensor. Rotate the capclockwise while gently pushing on the cap to lock the cap on to thephotoelectric sensor.

Table 3-1 Fiber Optic Module Switch Settings

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Switch Function ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Setting


Mode ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

L. OnÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Alarm ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

OffÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

TimerÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Off

14. Install the liquid tight fitting to the fiber optic module enclosure. Donot twist the fiber optic cable or bend the cable more than a one inchbend radius.

15. Set the switches on the fiber optic photoelectric sensor in accordancewith Table 3-1.

16. Connect 15 VDC to the fiber optic module per Figure 3-4 (manualoperation) or Figure 3-5 (automatic operation).

17. The fiber optic module may now connect to the receiving device.Refer to the appropriate Nordson manual(s) for interconnectioninformation.


Installation 3-5


108 104BIssued 4/97

Manual 17-20

1720006A

1

2

3

4

5

6

+15 VDC

GND

GND

DETECT SIG OUT

GND

STABILITY SIGNAL OUT

+15 VDC PWR

TB1

RED

BLK

WHT

BRN

MODULE

Fig. 3-4 Wiring diagram, Fiber Optic Module (Manual Operation)

1720007A

1

2

3

4

5

6

+15 VDC

GND

SIG +

SIG –

+15 VDC

TB1

RED

BLK

WHT

BRN

MODULE 1

2

3

4

PWR IN

CONN 1

DIVIDE BYFOUR BOARD

RED

BLK

WHT

Fig. 3-5 Wiring diagram, Fiber Optic Module (Automatic Operation)


Installation3-6


108 104BIssued 4/97

Manual 17-20

Follow these procedures to adjust the Fiber Optic Module.

1. Look through the exhaust port to the turbine disk. Rotate the turbineby hand until the non-reflective surface is opposite the fiber opticcable.

2. See Figure 3-6. Rotate the trimmer adjustment to the right until thered LED on the fiber optic photoelectric sensor lights and remains lit(Point A).

3. Rotate the turbine by hand until the reflective surface is opposite thefiber optic cable.

1720008A

D. ON

L. ON

MODE

OUT

STB

ALM.

OFF

TIMER

OFF DLY

ON DLY

OFF

TRIMMER ADJ.

GREEN

RED

Fig. 3-6 Module controls and indicators

Adjusting the Fiber OpticModule

Installation 3-7


108 104BIssued 4/97

Manual 17-20

4. Rotate the trimmer adjustment knob to the left, counting turns of theknob until the red LED on the fiber optic photoelectric sensor shuts offand remains off (Point B).

5. Rotate the trimmer adjustment knob to the right half way betweenpoints A and B

6. Reinstall the reducer bushing and elbow in the exhaust port at therear of the turbine.

7. Apply a minimum of 4.13 bar (60 psig), 5.5 bar (80 psig) optimumbearing air to the rotary atomizer turbine.

8. Slowly spin the rotary atomizer turbine shaft. If the photoelectricsensor is properly adjusted, the red and green LEDs will flash on andoff as the turbine spins.

9. Install the outer cover of the rotary atomizer.

Adjusting the Fiber OpticModule (contd)

Installation3-8


108 104BIssued 4/97

Manual 17-20


108 104BIssued 4/97

Manual 17-20

Section 4

Operation

Operation4-0


108 104BIssued 4/97

Manual 17-20

Operation 4-1


108 104BIssued 4/97

Manual 17-20

Section 4Operation

The following are general instruction to operate the fiber optic signalconditioner. Air pressures given within these instructions are initialsettings for checkout and may be adjusted for optimum performance.

The fiber optic signal conditioner operates as follows:

1. Make certain nominal 5.5 bar (80 psig), minimum of 4.13 bar(60 psig), bearing air is supplied to the rotary atomizer turbine.

2. Apply power to the receiving device.

WARNING: Avoid contact with high speed rotting parts.

WARNING: Maximum turbine speed for the Model RA-12rotary atomizer is 40,000 RPM. To avoid personal injury andequipment damage, do not exceed maximum speeds. Refer toTable 4-1 for speed information.

3. Adjust the TURBINE AIR pressure to obtain the expected speed asindicated on Table 4-1.

NOTE: Graph information is based on turbine air supplied through1/2 inch ID tubing in the lengths specified. Speeds are based on a turbinespinning an unloaded cup with 5.5 bar (80 psi) bearing air applied.

4. Compare the display on the RPM indicator with the expected speedas indicated on Table 4-1.

5. If the turbine speed is displayed and the speed indicated is close tothe expected speed, the fiber optic signal conditioner is operatingproperly. If the turbine speed is not displayed, or the speed indicatedis significantly different from the expected speed, adjust the turbinespeed to 0 psi and apply the turbine brake to bring the turbine to astop. Refer to Troubleshooting.

1. Introduction

2. Operational Checkout

Operation4-2


108 104BIssued 4/97

Manual 17-20

Table 4-1 Expected Turbine Speeds

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Turbine Air Pressure

Bar (psi)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

Speed x 1000

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

3.05m (10 ft)1/2 in. air line





ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

0.345 (5.0) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

12.0 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

8.8 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

6.5ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

0.689 (10.0)ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

20.0ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

14.5ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

10.5ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

1.03 (15.0)ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

26.0ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

21.6ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

17.9ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ


32.1ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

27.2ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ

23.0





27.9





31.6ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ


ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ


35.3ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ2.76 (40.0)



ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ38.1ÁÁÁÁÁÁÁÁÁÁÁ





40.8

2. Operational Checkout(contd.)


108 104BIssued 4/97

Manual 17-20

Section 5

Troubleshooting

Troubleshooting5-0


108 104BIssued 4/97

Manual 17-20

Troubleshooting 5-1


108 104BIssued 4/97

Manual 17-20

Section 5Troubleshooting

WARNING: Allow only qualified personnel to perform thefollowing tasks. Follow the safety instructions in this documentand all other related documentation.

This section contains troubleshooting procedures. These procedurescover only the most common problems that you may encounter. If youcannot solve the problem with the information given here, contact yourlocal Nordson representative for help.

WARNING: Hazardous voltages are present during testingprocedures. Serious injury or death may result if personnel failto observe safety precautions.

CAUTION: Printed circuit boards are susceptible to damagedue to electrostatic discharge. Personnel must be electricallygrounded while handling printed circuit boards.

Problem Page

1. RPM not displayed or is inaccurate 5-2

2. Power source not functioning 5-2

3. LED lights do not illuminate 5-3

1. Introduction

Troubleshooting5-2


108 104BIssued 4/97

Manual 17-20

Problem Possible Cause Corrective Action

1. RPM not displayed oris inaccurate

Wiring between the fiber optic moduleand receiving device

Check and correct the wiring.

15 V not present Check the fiber optic module powersource. Refer to the appropriatemanual.

Power source not functioning Repair or replace the power source.Refer to Problem 2.

2. Power source notfunctioning

Wiring between power source and fiberoptic module.

Check between GND and TB1(4) in thefiber optic module. Voltage shouldtoggle between 15 VDC and 0 V as thecup is spun.

Voltage is not toggling between 15 Vand 0 V.

Replace the fiber optic module

Divide by four board Check the divide-by-four board betweenpins 2 (gnd) and 4 (sig out–). Voltageshould toggle between 0 and 15 V ascup is spun. Replace the divide-by-fourboard if necessary.

2. Troubleshooting Chart

Troubleshooting 5-3


108 104BIssued 4/97

Manual 17-20

Problem Possible Cause Corrective Action

3. LED lights do notilluminate

Reflective surface damaged Remove cover from the fiber opticmodule. With power applied, bearing airon, and turbine air off, slowly spin theatomizer turbine by hand. The red LEDon the fiber optic module should turn on(light reflected) and off (light absorbed)as the cup is spun slowly. The greenLED will illuminate when marginalreflected light is seen. The LED’sshould alternate on and off as the cup isspun. Replace reflective surface ifnecessary.

Fiber optic cable or sensor damaged Remove the fiber optic cable from thefiber optic module. Hold one branch ofthe cable toward a light source. Withthe cable installed in the rotary atomizerturbine, spin the cup by hand withbearing air on and the turbine off. Lookinto the other branch of the fiber opticcable as the turbine is spun by hand.

If a blinking light is seen, adjust thesensor. Refer to Installation.

If a blinking light is not seen, replace thecable.

2. Troubleshooting Chart(contd.)

Troubleshooting5-4


108 104BIssued 4/97

Manual 17-20


108 104BIssued 4/97

Manual 17-20

Section 6

Repair

Repair6-0


108 104BIssued 4/97

Manual 17-20

Repair 6-1


108 104BIssued 4/97

Manual 17-20

Section 6Repair

Use the following procedure for the disassembly and repair of the fiberoptic module. Disassembly must be performed by qualified personnelobserving standard safety practices.

1. Remove and lock out the line power. Disconnect the input power tothe fiber optic module.

2. Remove the outer cover of the rotary atomizer.

3. Remove the 1/4 inch ferrule nut which retains the fiber optic cable tothe sensor plate.

See Figure 7-1. Disassemble the fiber optic module as follows:

CAUTION: Printed circuit boards are susceptible to damagedue to electrostatic discharge. Personnel must be electricallygrounded while handling printed circuit boards.

1. Remove the four screws (1), lockwashers (2), and flatwashers (3) toremove the cover (4) from the enclosure (14).

2. Disconnect the fluid tight fittings (15, 16) from the enclosure.

3. (Manual operation only)—tag and disconnect the wiring connected tothe terminal block (9) on the fiber optic enclosure panel (13).

4. (Automatic operation only)—tag and disconnect the wiring connectedto the terminal block on the divide-by-four board (5).

5. (Automatic operation only)—remove the four screws (1),lockwashers (2), and flatwashers (3) to remove the divide-by-fourprinted circuit boar (5) from the fiber optic enclosure panel (13).

6. Disconnect the fiber optic cable from the fiber optic photoelectricsensor.

1. Introduction

2. Initial Disassembly

3. Disassembly of the FiberOptic Module

Repair6-2


108 104BIssued 4/97

Manual 17-20

7. Remove the two screws (6), lockwashers (7) and flatwashers (8) toremove the terminal block (9) and marker strip (10).

8. Insert a small screwdriver into the slotted tab on the fiber opticphotoelectric sensor (11), directly below the connector for the fiberoptic cable. Gently pry the slotted tab forward. Lift the fiber opticphotoelectric sensor (11) from the base.

9. Remove the two screws (12) to remove the base from the fiber opticenclosure panel (13).

10. Remove the four screws (1), lockwashers (2), and flatwashers (3) toremove the fiber optic enclosure panel (13) from the enclosure (14).

Repair of the fiber optic module is limited to the removal and replacementof damaged components or printed circuit boards. See Figure 7-1 forcomponent locations

3. Disassembly of the FiberOptic Module (contd.)

4. Repair of the Fiber OpticModule


108 104BIssued 4/97

Manual 17-20

Section 7

Parts

Parts7-0


108 104BIssued 4/97

Manual 17-20

Parts 7-1


108 104BIssued 4/97

Manual 17-20

Section 7Parts

To order parts, call the Nordson Customer Service Center or your localNordson representative. Use this five-column parts list, and theaccompanying illustration, to describe and locate parts correctly.

Numbers in the Item column correspond to numbers that identify parts inillustrations following each parts list. The code NS (not shown) indicatesthat a listed part is not illustrated. A dash (—) is used when the partnumber applies to all parts in the illustration.

The six-digit number in the Part column is the Nordson Corporation partnumber. A series of dashes in this column (- - - - - -) means the partcannot be ordered separately.

The Description column gives the part name, as well as its dimensionsand other characteristics when appropriate. Indentions show therelationships between assemblies, subassemblies, and parts.

Item Part Description Quantity Note

— 000 000 Assembly 1

1 000 000 � Subassembly 2 A

2 000 000 � � Part 1

� If you order the assembly, items 1 and 2 will be included.� If you order item 1, item 2 will be included.� If you order item 2, you will receive item 2 only.

The number in the Quantity column is the quantity required per unit,assembly, or subassembly. The code AR (As Required) is used if thepart number is a bulk item ordered in quantities or if the quantity perassembly depends on the product version or model.

Letters in the Note column refer to notes at the end of each parts list.Notes contain important information about usage and ordering. Specialattention should be given to notes.

1. Introduction

Using the Illustrated PartsList

Parts7-2


108 104BIssued 4/97

Manual 17-20

See Figure 7-1.

Item Part Part Description QuantityManual

QuantityAutomatic

132 245 Module, fiber optic, manual 1

132 192 Module, fiber optic, automatic 1

1 981 064 981 064 � Screw, #8-32 x 3/8 8 12

2 983 111 983 111 � Washer, lock ,split, #8 8 12

3 983 010 983 010 � Washer, flat #8 8 12

4 132 254 132 254 � Encloser, fiber optic 1 1

5 - - - - - - 111 093 � Board, PC, divide by four 0 1

6 981 597 981 597 � Screw, #6-32 x 1/2 2 2

7 983 102 983102 � Washer, Lock #6 2 2

8 983 003 983 003 � Washer, flat #6 2 2

9 121 057 121 057 � Block, terminal, 6 station 1 1

10 933 202 933 202 � Strip, marker, 6 position 1 1

11 132 190 132 190 � Sensor, photoelectric, fiber optic 1 1

12 981 010 981 010 � Screw, #4-40 x 7/16 2 2

13 132 193 132 193 � Panel, enclosure, fiber optic 1 1

14 132 194 132 194 � Enclosure, fiber optic 1 1

15 132 297 132 297 � Fitting, liquid tight, 0.231–0.394 1 1

16 132 298 132 298 � Fitting, liquid tight, 0.079–0.197 1 1

2. Fiber Optic Module

Parts 7-3


108 104BIssued 4/97

Manual 17-20

1720009A

1

2

3

4

6

7

8

2

1

3

1

2

3

9

10

13

14

15

16

11

12

Partof 11

5

Fig. 7-1 Fiber Optic Module

2. Fiber Optic Module (contd.)

Parts7-4


108 104BIssued 4/97

Manual 17-20

See Figure 7-2.

Item Part Description Quantity Note

— 132 195 Installation kit, cable optic 1

1 132 442 � Cable, fiber optic, reflectivec 1

2 132 443 � Connector, cable, fiber optic 1

1720010A

1 2

Fig. 7-2 Optic cable installation kit

3. Optic Cable InstallationKit


108 104BIssued 4/97

Manual 17-20

Section 8

Specifications

Specifications8-0


108 104BIssued 4/97

Manual 17-20

Specifications 8-1


108 104BIssued 4/97

Manual 17-20

Section 8Specifications

This section contains the technical data you will need for the Fiber OpticModule.

Height: 22.9 cm (9.00 in.)

Width: 20.32 cm (8.0 in.)

Depth: 5.08 cm (2.0 in.)

Mounting: (width, center to center) 14.61 cm (5.75 in.)(height, center to center) 25.1 cm (9.88 in.)

Weight: 2.95 K (6.5 lb)

Power Requirements: 15 VDC

Length 12.2 m (40 ft)

1. Introduction

Fiber Optic Module

Fiber Optic Cable

Specifications8-2


108 104BIssued 4/97

Manual 17-20

fiber optic module

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