20140319 01-3711-7d0004 ba apex2003si en a - …apex 2003.si control unit type 07-3711-.2.3/.......

APEX 2003.SIOperating instructions

Control Unit APEX 2003.SI Type 07-3711-3223/.... (High pressure); Type 07-3711-4213/.... (Dilution);

Document No. 01-3711-7D0004 Version: 19.03.2014/Rev. A

BARTEC GmbH Tel.: +49 7931 597-0 [email protected] Max Eyth-Straße 16 Fax: +49 7931 597-119 www.bartec.de 97980 Bad Mergentheim Germany

Reservation: Technical data subject to change without notice. Changes, errors and misprints may not be used as a basis for any claim for damages.

Operating Instructions

APEX 2003.SI Control Unit

07-3711-3223/….

-High pressure-

07-3711-4213/….

-Dilution-

Document no.: 01-3711-7D0004 Version: 19 March 2014 / Rev. A

Contents Page English 1 - 56

Appendix EC Declaration of Conformity EC Type Examination Certificate

APEX 2003.SI Control Unit Type 07-3711-.2.3/....

Technical data subject to change without notice.

- EMPTY SHEET -


Table of Contents


1 Safety 5 1.1 This Manual 5 1.1.1 Languages 6 1.2 Handling the Product 6 1.3 Use in Accordance with the Intended Purpose 6 1.3.1 Exclusive Purpose 6 1.3.2 Improper Use 6 1.4 Operator’s Obligations 6 1.5 Safety Instructions 7 1.5.1 General Safety Instructions 7 1.5.2 Safety Instructions for Operation 7 1.6 Standards Conformed To 8 1.7 Ex Protection Type and Certification 9 1.8 Warranty 9

2 Product Description 10 2.1 APEX 2003.SI Control Unit (High Pressure) 10 2.1.1 Schematic Diagram 11 2.1.2 Construction of the Control Unit 12 2.2 APEX 2003.SI Control Unit (Dilution) 13 2.2.1 Schematic Diagram 13 2.2.2 Construction of the Control Unit 14

3 Installation 15 3.1 APEX 2003.SI Control Unit 15 3.1.1 Control Configuration 15 3.1.2 Mounting the Control Unit 16

4 Connections 17 4.1 Pneumatic Connections 17 4.2 Electrical Connections 17 4.2.1 Safety Instructions for the Electrical System 17 4.2.2 Rules for Wiring to the APEX Control Unit 18 4.2.3 APEX 2003.SI Control Unit (Type 3223, High Pressure) 19 4.2.4 APEX 2003.SI Control Unit (Type 4213, Dilution) 24

5 Operation 28 5.1 Setting of Parameters 28 5.2 Operation of the Sensor Module 29 5.3 Display on the Sensor Module 29 5.4 Changing of Values 29 5.5 S1 Rotary Switch for “Display” 30 5.6 Rotary Switches S2 to S4 “Purge time” 30 5.7 S5 “ON/OFF” Rotary Switch 31 5.8 K4 and K5 Relays 31

6 Commissioning 32 6.1 Setting of the Positive Operating Pressure (DP 1) 33 6.2 Checking the Quantity Lost through Leakage 33 6.3 Calculation of Purge Time 33 6.3.1 Checking the Purging Phase 34 6.3.2 Checking the Operating Phase 34

7 Operation 35 7.1 Safety during Operation 35 7.2 Types of Purging Gas 35 7.3 Operating Phases in the Pressurized Enclosure 36 7.4 Operating Phases in a Pressurized Enclosure 36 7.4.1 Purging Phase 36

Table of Contents APEX 2003.SI Control Unit Type 07-3711-.2.3/....


7.4.2 Operating Phase 37 7.5 Bypass Operation 37

8 Maintenance and Care 38 8.1 Inspection Table for Commissioning and Maintenance 39

9 Malfunctioning and Troubleshooting 40 9.1 Fault Table 40 9.2 Error Code Table 42

10 Technical Data 43 10.1 General Technical Data for the APEX Control Unit 43 10.2 Supplementary Technical Data for the APEX 2003.00SI Control Unit (High Pressure) 44 10.3 Supplementary Technical Data for the APEX 2003.00SI Control Unit (Dilution) 44

11 Order Numbers 45 11.1 APEX 2003.SI Control Units 45 11.2 Accessories and Spare Parts 45 11.2.1 Sensor Module 45 11.2.2 Pressure Reducer 45 11.2.3 Accessories 45 11.2.4 Control Module 45

12 Test and Assessment Report Form 46

13 Appendix 48 13.1 Purging Gas Diagram for the APEX 2003.SI (Type: 07-3711-3223/....) 48 13.2 Purging Gas Diagram for the APEX 2003.SI (Type: 07-3711-4213/....) 49

14 Declarations of Conformity and Approvals 50 14.1 EC Declaration of Conformity for the APEX Control Unit 50 14.2 EC Type Examination Certificate for the APEX Control Unit 51


Safety

Technical data subject to change without notice. EN 5/56

1 Safety

1.1 This Manual

O p e r a t i n g I n s t r u c t i o n s

It is essential to read and observe the contents of this documentation and this chapter in particular before you install and operate the APEX control unit.

This manual contains the information required to use the control unit in accordance with its intended purpose. It is addressed to technically qualified personnel.

Familiarity with and the technically perfect implementation of the safety instructions and warnings described in this manual are preconditions for safe installation and commissioning. The safety notes and warnings in this documentation are given in a general way and only qualified personnel will have the necessary specialised know-how to interpret and implement them correctly in specific individual cases.

This manual is an integral part of the scope of supply even if for logistical reasons it can be ordered and delivered separately. If you need any further information, please ask the BARTEC branch that is near you or responsible for your area.

Particularly important points in this documentation are marked with a warning symbol:

D A N G E R

DANGER draws attention to a danger which will lead to death or serious injury if not avoided.

W A R N I N G

WARNING draws attention to a danger which can lead to death or serious injury if it is not avoided.

C A U T I O N

CAUTION draws attention to a danger which can lead to an injury if it is not avoided.

A T T E N T I O N

ATTENTION draws attention to measures which should be taken to prevent damage to property.

N o t e

Important instructions and information on effective, economical and environmentally compatible handling.

Safety APEX 2003.SI Control Unit Type 07-3711-.2.3/....

EN 6/56 Technical data subject to change without notice.

1.1.1 Languages

N o t e

The original operating instructions were written in German. All other available languages are translations of the original operating instructions.

The operating instructions are available in various languages. They are enclosed with the product in the languages German, English, French, Italian, Spanish and Russian. If you require any other languages, please ask BARTEC or request them when placing the order.

1.2 Handling the Product

The product described in these operating instructions has been tested and left the factory in perfect condition as regards meeting safety requirements. To maintain this condition and ensure that this product operates perfectly and safely, use it only in the manner described by the manufacturer. Appropriate transportation, suitable storage and careful operation are also essential for the perfect and safe operation of this product.

The APEX control unit must be mounted properly and securely onto the pressurized enclosure if it is to work perfectly and correctly.

1.3 Use in Accordance with the Intended Purpose

1.3.1 Exclusive Purpose

The APEX control unit serves exclusively as a controlling and monitoring device for pressurized enclosures and is intended for use in Explosion Group II, category 2G and Temperature Class T4 or T6.

The permissible operating data for the device being used must be observed.

1.3.2 Improper Use

Any other use is not in accordance with the intended purpose and can cause damage and accidents. The manufacturer will not be liable for any use beyond that of its exclusive intended purpose.

1.4 Operator’s Obligations

The operator undertakes to restrict permission to work on the APEX control unit to people who:

are familiar with the basic regulations on safety and accident prevention and have been instructed in the use of the ATEX control unit;

have read and understood the documentation, the chapter on safety and the warnings.

The owner/managing operator checks that the safety regulations and accident prevention rules applicable to the respective application are being observed.


Safety

Techncal data subject to change without notice. EN 7/56

1.5 Safety Instructions

1.5.1 General Safety Instructions

Do not wipe devices with a dry cloth or clean them in a hazardous area!

Do not open devices in a hazardous area.

The general statutory regulations or directives relating to safety at work, accident prevention and environmental protection legislation must be observed, e.g. the German industrial health and safety ordinance (BetrSichV) or the applicable national ordinances.

In view of the risk of dangerous electrostatic charging, wear appropriate clothing and footwear.

Avoid the influence of heat that is higher or lower than the specified temperature range (see Chapter 10.1 “General Technical Data”).

Keep the devices away from moisture.

1.5.2 Safety Instructions for Operation

When setting up or operating explosion-resistant electrical systems, the IEC/EN 60079-14 (NEC for USA/CEC for Canada) and all relevant installation and operating regulations must be observed.

Upkeep

For electrical systems the relevant installation and operating regulations must be complied with (e.g. Directive 99/92/EC, Directive 94/9/EC, German industrial health and safety ordinance (BetrSichV), the applicable national ordinances IEC 60079-14 and the DIN VDE 0100 series)!

The disposal of this equipment must comply with the national regulations on the disposal of waste.

Maintenance

Regular maintenance is not necessary if the device is operated correctly, in accordance with the installation instructions and environmental conditions. See Chapter on “Maintenance and Care”.

Inspection

Under IEC 60079-19 and EN 60079-17, the owner/managing operator of electrical installations in hazardous areas is obliged to have these installations checked by a qualified electrician to ensure that they are in a proper condition.

Repairs

Repairs on explosion-protected operating equipment may be done only by authorised persons working in accordance with the latest developments in technology and using original spare parts. The relevant regulations must be observed.

Commissioning

Before commissioning, check that all components and documents are there.

Safety APEX 2003.SI Control Unit Type 07-3711-.2.3/....


1.6 Standards Conformed To

The APEX control unit conforms to Directive 94/9/EC for devices and protective systems for use for their intended purpose in hazardous areas (ATEX Directive). Pursuant to this directive, the following standards serve as a basis for the APEX control unit:

Standard Designation

EN 60079-0:2012 Electrical apparatus for explosive gas atmospheres.

Part 0: General Requirements

EN 60079-1:2007 Explosive Atmospheres -

Part 1: Equipment protection by flameproof enclosure “d”


Part 2: Equipment protection by pressurized enclosure “p”


Part 7: Equipment protection by increased safety “e”


Part 11: Equipment protection by intrinsic safety “i”


Part 26: Equipment with equipment protection level (EPL) Ga

DIN EN ISO 61511-1:2005

Functional Safety - safety instrumented systems for the process industry sector - Part 1:

Framework, definitions, system, hardware and software requirements

DIN EN ISO 61511-2:2005

Functional Safety - safety instrumented systems for the process industry sector - Part 2:

Guidelines for the application of part 1

EN 61000-6-2:2005 Electromagnetic Compatibility (EMC) -

Part 6-2: Generic standards - Immunity for Industrial environments

EN 61000-6-4:2007 +A1:2011

Electromagnetic Compatibility (EMC) -

Part 6-4: Generic standards - Emission standard for industrial environments

EN 60529:1991 +A1:2000

Degrees of protection provided by enclosures (IP code)


Safety


1.7 Ex Protection Type and Certification

The following markings showing Ex protection and certification are affixed to the device:

II 2(1) G Ex de ib [ia Ga px] IIC T4 Gb DMT 99 ATEX E 082

1.8 Warranty

W A R N I N G

Risk of death or serious injury if the control is modified or converted without the manufacturer’s approval.

Explosion protection and the necessary stress tolerance and conformance to safety requirements of the design and production are no longer assured then.

Before making any modifications or implementing any conversions, contact the manufacturer and obtain written approval.

Use only original spare parts and original expendable parts.

N o t e

Scope of warranty

The manufacturer grants a complete guarantee only and exclusively for the spare parts ordered from the manufacturer.

As a basic rule, our “General Conditions of Sale and Delivery” apply. These are available to the owner/managing operator at the latest on formation of a contract. Guarantee and liability claims for personal injury and damage to property are excluded if they are due to one or more of the following reasons:

use of the APEX control unit for a purpose other than that for which it is intended.

incorrect installation, commissioning, operation and maintenance of the APEX control unit.

non-compliance with the instructions in the manual with respect to transport, storage, assembly, commissioning, operation and maintenance.

structural modifications to the APEX control unit without our prior authorisation.

inadequate monitoring of components that are subject to wear.

repairs done incorrectly.

disasters due to the effects of foreign matter or force majeure.

We guarantee the APEX control unit and its accessories for a period of 1 year starting on the date of delivery from the Bad Mergentheim factory. This guarantee covers all parts of the delivery and is restricted to the replacement free of charge or the repair of the defective parts in our Bad Mergentheim factory. As far as possible, the delivery packaging should be kept for this purpose. In the event of such a claim, the goods must be returned to us after written arrangement. The customer cannot claim to have the repairs done at the site of installation.

Product Description APEX 2003.SI Control Unit Type 07-3711-.2.3/....


2 Product Description

The APEX control units described here are specially intended for use on the “containment system” version of pressurized enclosures.

BARTEC produces two different variants for this application. The two APEX control units concerned differ in the technology used for purging the pressurized enclosure.

Type 07-3711-3223 (high pressure):

In this variant of the APEX control unit, the level of pressure in the pressurized enclosure is always 50 Pa above the pressure of the supplied measuring gas. Due to this automatic adjustment of the internal positive pressure in relation to the measuring gas pressure, it is not possible for the measuring gas to enter the interior of the pressurized enclosure in the event of a leakage.

Type 07-3711-4213 (dilution):

In this variant of the APEX control unit, a constant flow through the interior is generated once the purging has ended. In the event of a leakage, this constant flow inside the pressurized enclosure ensures that the explosive measuring gas is diluted to an extent that prevents an explosion occurring.

2.1 APEX 2003.SI Control Unit (High Pressure)

The type 07-3711-3223/…. APEX control unit has been specially designed for Ex p systems which are constructed within the concept of a “containment system”.

For this purpose, the APEX control unit functions in accordance with the method described in EN 60079-2, chapter 11.1.2, whereby the internal pressure in the pressurized enclosure is always 50 Pa (0.5 mbar) above the level of pressure of the measuring gas. If the difference in pressure drops to less than 50 Pa, the analysis system is automatically deactivated.

Once the APEX control unit has been mounted, the purging gas connections have been connected to the pressurized enclosure and the mains voltage and protective gas have been connected, the Ex p system starts automatically. The Ex p control with the APEX control unit regulates the purging gas flow and the pressure inside the enclosure during the purging phase as well as the pressure inside the enclosure during the operating phase.

Once the pressurized enclosure has been purged and the fitted components inside have been automatically activated, the APEX control unit monitors the positive pressure prevailing in the pressurized enclosure and the pressure of the supplied measuring gas. If there is a change in the pressure level of the measuring gas, the APEX control unit automatically regulates the internal pressure of the pressurized enclosure until the difference in pressure between the pressurized enclosure and the measuring gas reaches the required 50 Pa.

If the pressure of the measuring gas increases to the extent that the difference in pressure cannot reach 50 Pa, the pressurized enclosure is deactivated.


Product Description


2.1.1 Schematic Diagram

Item Designation

Purge gas flow

Measuring gas

Pressurized enclosure

Measuring cell

APEX 2003.SI control unit

External relative pressure sensor

External differential pressure switch



2.1.2 Construction of the Control Unit

The type 07-3711-3223/…. APEX control unit is mounted at a distance from the pressurized enclosure.

The purge gas connections are mounted between the pressurized enclosure and the APEX control unit.

Construction:

Item Designation Function

Control module Control unit

Sensor module Display of system pressure levels

Outlet valve Purge gas outlet

Pressure monitor Purge gas measurement

Bypass key switch Bypass operation

Pressure reducer with pressure gauge Purge gas supply

Purge gas valve Purge gas feed

PE bar Earthing connection

Cable gland Cable entry

Purge gas connection Supply to Ex p enclosure


Product Description


2.2 APEX 2003.SI Control Unit (Dilution)

The type 07-3711-4213/…. APEX control unit is specially intended for Ex p systems constructed within the concept of a “containment system”.

For this purpose, the APEX control unit functions in accordance with the method described in EN 60079-2, chapter 13.3, whereby the control unit purges the pressurized enclosure and a continuous flushing (operating flow) reliably prevents a dangerous concentration of explosive gas mixtures. As the pressure inside the pressurized enclosure is higher than the atmospheric pressure, it is not possible at any point in time for explosive gases to penetrate the pressurized enclosure from outside.

Once the APEX control unit has been mounted, the purging gas connections have been connected to the pressurized enclosure and the mains voltage and protective gas have been connected, the Ex p system starts automatically. The Ex p control with the APEX control unit regulates the purging gas flow and the pressure inside the enclosure during the purging phase, as well as the pressure inside the enclosure and the operating flow during the operating phase.

2.2.1 Schematic Diagram

Item Designation

Purge gas flow


APEX 2003.SI control unit



2.2.2 Construction of the Control Unit

The type 07-3711-4213/…. APEX control unit is mounted at a distance from the pressurized enclosure.

Purge gas connections are mounted between the pressurized enclosure and the APEX control unit.

Construction:


Control module Control unit

Sensor module Display of system pressure levels

Purge gas circuit dilution Operating flow

Pressure monitor Purge gas measurement

Bypass key switch Bypass operation

Pressure reducer with pressure gauge Purge gas supply

Purge gas valve Purge gas feed

PE bar Earthing connection

Cable gland Cable entry

Purge gas connection Supply Ex p enclosure


Installation


3 Installation

3.1 APEX 2003.SI Control Unit

3.1.1 Control Configuration

A T T E N T I O N

Do not install the purge gas supply directly opposite.

It is not permissible to mount the purge gas supply in a position directly opposite as this would interfere with the proper and efficient purging of the pressurized enclosure.

If the right positioning is not possible for mechanical reasons, use an angled element at the inlet to divert the purge gas flow.



APEX control unit Control

Purge gas connection Purge gas feed

The pressurized system configuration must be selected to ensure that the purge gas feed will purge the pressurized enclosure well.

All modules for controlling and regulating the purge gas flow are integrated in the control unit and they therefore do not need to be mounted separately.

G ¼” screw connections with internal thread are attached to the APEX control unit as standard for the purging gas feed and return.

The purging gas lines are to be produced with a hose that has an internal diameter of at least 8 mm and a maximum length of 5 m.

Installation APEX 2003.SI Control Unit Type 07-3711-.2.3/....


3.1.2 Mounting the Control Unit

To mount the APEX control unit onto a wall or a mounting plate, the top lid must be removed. The APEX control unit can be screwed onto a wall or mounting plate by using the mounting holes provided for that purpose.

The mounting bores should be 200 mm x 380 mm in size.

Assembly drawing:

Quantity Material

4 Screw M6 x 30

Quantity Material

4 Screw M6 x 35

4 Washer M6

4 Retaining ring M6

4 Nut M6


Connections


4 Connections

4.1 Pneumatic Connections

The following purge gas connections must be produced in the APEX control unit:

Purge gas supply at the pressure reducer ().

Purge gas supply and return to the pressurized enclosure ().

4.2 Electrical Connections

4.2.1 Safety Instructions for the Electrical System

D A N G E R

Risk of fatal injury from electrical current.

Work on live parts poses a risk of electrocution. Observe the 5 safety rules for work on electrical systems: - disconnect from the mains supply - safeguard against unintended reconnection - verify the absence of voltage - earth and short-circuit - cover or safeguard nearby live parts

Connections APEX 2003.SI Control Unit Type 07-3711-.2.3/....


4.2.2 Rules for Wiring to the APEX Control Unit

D A N G E R

Risk of fatal injury when enclosure covers are opened.

The cover on the APEX control unit must not be opened in a hazardous (potentially explosive) atmosphere!

Before opening any lids on the enclosure, check the atmosphere for the presence of any explosive gases.

A T T E N T I O N

All core wires, including those not required, must be connected to a terminal.

Lay the wires only in the space between the shield and the connecting terminals. The wires must not jut out / protrude. There must not be any loose wires in the APEX control unit.

Check the connections.

The following describes how to feed and connect cables to the APEX control unit:

Procedure:

Loosen the fastening screws (4 screws) on the lid of the APEX control unit and take off the lid.

Feed the supply, data and enable line through the cable glands into the Ex e junction box.

Establish the electrical connections in accordance with the terminal assignment. Screw the terminals in securely with 0.4 - 0.6 Nm.

Put the shields and earthing connections onto the shield bus.

Use appropriate closures to seal cable glands that are not in use.

Tighten cable glands with 3.0 Nm.

Put the lid onto the APEX control unit and tighten the 4 fastening screws with 1.4 Nm.


Connections


4.2.3 APEX 2003.SI Control Unit (Type 3223, High Pressure)

Terminal Connection Function 1-12 Sensor module Control 13-14 Ext. P switch Gas pressure measurement 15-16 Temperature switch Cooling 17-18 Bypass key switch Bypass operation 19-20 Ext. activation Activation Ex p outlet 21-22 Ext. P sensor Gas pressure measurement 23-24 Programming bridge Safety module 25-26 Supply voltage Voltage supply 28-29 Outlet valve System-dependent 31-32 Purge gas valve Purge gas supply 34-35 Ex p Enabling 27, 30, 33, 36, 37 PE connection Earthing 38-46 Floating contacts Alarm signalling 47-48 RS485 interface Only for service



4.2.3.1 Supply voltage

A T T E N T I O N

Incorrect supply voltage destroys the control module in the APEX control unit!

An incorrect supply voltage will destroy the control module’s internal fusing.

Before activating the supply voltage, compare the supply voltage level with the level printed on the APEX control unit.

The supply voltage specified on the control module must be connected to terminals 25, 26 and 27.

Terminal Connection Function 25 L Phase 26 N Neutral conductor 27 PE Earthing

4.2.3.2 Enabling pressurized enclosure

A T T E N T I O N

Protect the control module from overcurrent!

The Ex p enabling (relays K2/3; terminals 34 and 35) may be operated only in conjunction with a mains fuse.

Data: max. 5 A, 1,500-A switching capacity, quick-acting

Check the version.

The application inside the pressurized enclosure is enabled by means of the APEX control unit. There must not be any voltage in the pressurized enclosure when the APEX control is deactivated. The maximum which the Ex p enabling can switch is a single-phase circuit with neutral conductor and a maximum load of 5 A. If the current load inside the pressurized enclosure is polyphase or more than 5 A, a separately certified Ex d contactor, activated by the APEX control unit, will be required.

Terminal Connection Function 34 Phase L enabling Phase 35 Neutral conductor N enabling Neutral conductor 36 PE Earthing


Connections


4.2.3.3 Floating Contacts

Floating contacts are available for processing signals at the APEX control unit. Their function is freely programmable.

Terminal Connection Function 38 Floating contact N.C., normally closed 39 Floating contact C, base contact 40 Floating contact N.O., normally open 41 Floating contact N.O., normally open 42 Floating contact N.O., normally open 43 Floating contact N.O., normally open 44 Floating contact N.O., normally open 45 Floating contact N.O., normally open 46 Floating contact N.O., normally open

4.2.3.4 Programming bridge

N o t e

It is not possible to program the control module without a programming bridge. The programming bridge is necessary when altering the programming and setting pressure levels because these changes will not be accepted without a programming bridge.

Put on the programming bridge to make changes to the programming.

Remove the programming bridge when you have finished programming.

Adjusting work at the control module and sensor module cause alterations to the overall function. When changes are to be made and saved, the programming bridge included in the scope of supply must be placed at terminals 23 and 24 before the adjustments are made.

To ensure that the programming bridge will not be forgotten after the conclusion of the work on the APEX control unit, it is designed to prevent the lid of the APEX control unit closing as long as the programming jumper is still connected.

4.2.3.5 RS485 Interface

The RS 485 interface is intended only for servicing and setting work in the factory. The RS485 interface must not be used while the pressurized operating equipment is in use.



4.2.3.6 Separate ON/OFF Switch

N o t e

- The 19/20 input must always be provided with a bridge whenever there isn’t any switch connected. Otherwise, the purging will proceed but the application in the pressurized enclosure will not be enabled.

- The 19/20 input is active also during the purging phase or when the bypass key switch is activated. If the bridge or the switch is not closed and the purge time has ended, the pressurized enclosure will not be enabled.

A separately certified switch for manually switching the Ex p enabling on and off can be connected at terminals 19 and 20 instead of the existing bridge.

Function:

The function of a main switch can be emulated by the separate ON/OFF switch.

After activation, the APEX control unit purges the pressurized enclosure and generates the required positive pressure. The internal module (control) is not switched on until the separate ON/OFF switch is activated.

Terminal Connection Function 19 ON/OFF switch N.O. 20 ON/OFF switch N.O.

4.2.3.7 Thermal Overload Connection

N o t e

This process is not a safety temperature monitoring procedure as intended in the standard. If such monitoring is required, a safety thermostat must be used instead of the normal commercially available thermostat, which can only be manually reset.

Terminals 19 and 20 can be used with the connection of 2 redundant thermostats (N.C. contacts) to turn off the non-Ex devices inside the pressurized enclosure once the set temperature is reached.

Function:

When the set temperature is exceeded, the thermostat contact opens. The opening action cancels and accordingly deactivates the command enabling the pressurized enclosure.

Terminal Connection Function 19 ON/OFF switch N.C. 20 ON/OFF switch N.C.


Connections


4.2.3.8 External differential pressure switch

Terminals 13 and 14 allow the connection of an external differential pressure switch.

This serves to ensure the fulfilment of the requirement under EN 60079-2 that a difference of 0.5 mbar (50 Pa) be maintained between the internal positive pressure and the pressure level of the fed measuring gas. A differential pressure of 5 mbar (500 Pa) is recommended.

If no differential pressure switch is connected, a 1.5-kΩ resistor must be connected between terminals 13 and 14 a.

Terminal Connection Function

13 Differential pressure switch Separate pressure measurement

14 Differential pressure switch Separate pressure measurement

4.2.3.9 External Relative Pressure Sensor

If the pressurized enclosure’s pressure is to track the fluctuations in the measuring gas pressure, a separate relative pressure transmitter must be mounted onto the analyser’s measuring gas inlet and its analog outlet must be connected to the control module’s terminals 21 (+) and 21(-).

This external pressure sensor serves to monitor the internal pressure in the pressurized enclosure in relation to the measuring gas line and to keep it constantly at an increased level (DIFF C). Diff C has been factory pre-set to 5 hPa. If the internal pressure in the pressurized enclosure drops for more than 5 seconds below the Diff C min level, the electrical components are switched off and a new purging phase is started.

If no pressure sensor is connected, a 6.8- kΩ resistor must be connected between the terminals 21 and 22.

Terminal Connection Function 21 Pressure sensor (+) 4…20 mA analog inlet 22 Pressure sensor (-) 4…20 mA analog inlet



4.2.4 APEX 2003.SI Control Unit (Type 4213, Dilution)

Terminal Connection Function 1-12 Sensor module Control sensor module 13-14 No function Variant-dependent

15-16 Temperature switch Temperature-dependent supply of purge gas

17-18 Bypass key switch Bypass operation 19-20 ON/OFF switch Separate activation Ex p outlet 21-22 No function Variant-dependent 23-24 Programming bridge Safety module 25-26 Supply voltage Voltage supply APEX control unit 28-29 No function System-dependent 31-32 Purge gas valve Purge gas supply 34-35 Ex p Enabling the pressurized enclosure 27, 30, 33, 36, 37

PE connection Earthing

38-46 Floating contacts Alarm signalling 47-48 RS485 interface Only for service


Connections


4.2.4.1 Supply voltage

A T T E N T I O N

Incorrect supply voltage will destroy the control module in the APEX control unit!

An incorrect supply voltage will destroy the control module’s internal fusing.

Before you activate the supply voltage, compare the level with that printed on the APEX control unit.

The supply voltage specified on the control module must be connected to terminals 25, 26 and 27.

Terminal Connection Function 25 L Phase 26 N Neutral conductor 27 PE Earthing

4.2.4.2 Enabling of Pressurized Enclosure

A T T E N T I O N

Protect the control module from overcurrent!

The Ex p enabling (relays K2/3; terminals 34 and 35) may be operated only in conjunction with a mains fuse.

Data: max. 5 A, 1,500-A switching capacity, quick-acting

Check the version.

The application inside the pressurized enclosure is enabled by means of the APEX control unit. There must not be any voltage in the pressurized enclosure when the APEX control is deactivated.

The maximum the Ex p enabling can switch is a single-phase circuit with neutral conductor and a maximum load of 5 A. If the current load inside the pressurized enclosure is polyphase or more than 5 A, a separately certified Ex d contactor, activated by the APEX control unit, will be required.

Terminal Connection Function 34 Phase L enabling Phase 35 Neutral conductor N enabling Neutral conductor 36 PE Earthing



4.2.4.3 Floating Contacts

Floating contacts are available for processing signals at the APEX control unit. Their function is freely programmable.

Terminal Connection Function 38 Floating contact N.C., normally closed 39 Floating contact C, base contact 40 Floating contact N.O., normally open 41 Floating contact N.O., normally open 42 Floating contact N.O., normally open 43 Floating contact N.O., normally open 44 Floating contact N.O., normally open 45 Floating contact N.O., normally open 46 Floating contact N.O., normally open

4.2.4.4 Programming Bridge

N o t e

It is not possible to program the control module without a programming bridge. The programming bridge is necessary when altering the programming and setting pressure levels because these changes will not be accepted without a programming bridge.

Put on the programming bridge to make changes to the programming.

Remove the programming bridge when you have finished programming.

Adjusting work at the control module and sensor module cause alterations to the overall function. When changes are to be made and saved, the programming bridge included in the scope of supply must be placed at terminals 23 and 24 before the adjustments are made.

To ensure that the programming bridge will not be forgotten after the conclusion of the work on the APEX control unit, it is designed to prevent the lid of the APEX control unit closing as long as the programming jumper is still connected.

4.2.4.5 RS485 Interface

The RS 485 interface is intended only for servicing and setting work in the factory. The RS485 interface must not be used while the pressurized operating equipment is in use.


Connections


4.2.4.6 Separate ON/OFF Switch

N o t e

- The 19/20 input must always be provided with a bridge whenever there isn’t any switch connected. Otherwise, the purging will proceed but the application in the pressurized enclosure will not be enabled.

- The 19/20 input is active also during the purging phase or when the bypass key switch is activated. If the bridge or the switch is not closed and the purge time has ended, the pressurized enclosure will not be enabled.

A separately certified switch for manually switching the Ex p enabling on and off can be connected at terminals 19 and 20 instead of the existing bridge.

Function:

The function of a main switch can be emulated by the separate ON/OFF switch.

After activation, the APEX control unit purges the pressurized enclosure and generates the required positive pressure. The internal module (control) is not switched on until the separate ON/OFF switch is activated.

Terminal Connection Function 19 ON/OFF switch N/O 20 ON/OFF switch N/O

4.2.4.7 Thermal Overload Connection

N o t e

This process is not a safety temperature monitoring procedure as intended in the standard. If such monitoring is required, a safety thermostat must be used instead of the normal commercially available thermostat, which can only be manually reset.

Terminals 19 and 20 can be used with the connection of 2 redundant thermostats (N.C. contacts) to turn off the non-Ex devices inside the pressurized enclosure once the set temperature is reached.

Function:

When the set temperature is exceeded, the thermostat contact opens. The opening action cancels and accordingly deactivates the command enabling the pressurized enclosure.

Terminal Connection Function 19 ON/OFF switch N.C. 20 ON/OFF switch N.C.

Operation APEX 2003.SI Control Unit Type 07-3711-.2.3/....


5 Operation

5.1 Setting of Parameters

N o t e

Alteration of parameters and settings Parameter changes are only accepted when the programming bridge is connected to terminals 23 and 24 and the levels have been established by means of a reset with the S5 rotary switch.

The parameters are set on the control module and the sensor module. For this purpose, there are five rotary switches on the control module and 3 buttons on the sensor module.

The following sections explain the individual functions of the rotary switches and buttons.

Rotary switch Function S1 Change display S2 10-minute purge time run S3 1-minute purge time run S4 10-second purge time run S5 ON/OFF switch


Operation


5.2 Operation of the Sensor Module

The “+”, “-“ and “SET” taster are used for altering and saving the switching values selected with the S1 rotary switch. Pressing the “+” or “-“ button once changes the level by 0.1 mbar. The altered value is saved by means of the “SET” button and marked by an “*”.

Setting the S1 rotary switch to position 8 or 9 programs the functions of relays K 4 and K 5.

Button Function + Increase the value - Reduce the value SET Save the altered value

5.3 Display on the Sensor Module

The sensor module display shows the values selected by means of the “S1” rotary switch. Three lines are shown in the display, whereby each line indicates a particular value

Line Function 1 Display of the current actual value 2 Display of the purge time 3 Display of the current setpoint value

5.4 Changing of Values

The parameters can be adjusted inside the APEX control unit as follows. This example here concerns the DP1 internal pressure:

Procedure:

Turn S1 “Display” to position “0”.

Connect a programming bridge between terminals 23 and 24.

Press the “+” or “-“ buttons to alter the DP 1 level.

Press the “SET” button on the sensor module to save the new level. o The change is confirmed by an “*” in the display.

Switch the APEX control unit off and on again by means of the S5 rotary switch.

Remove the programming bridge between terminals 23 and 24.

Note

Procedure to change the parameters.

Use the same procedure to change the switching values and functions of DIFF A (position 1) to K 5 (position 9).



5.5 S1 Rotary Switch for “Display”

A T T E N T I O N

“MAX 1” and “MAX” positive pressure switching levels

If the “MAX 1” switching level is set to a level higher than “MAX”, the positive pressure regulation is switched off.

The S1 rotary switch is used to display the different switching levels in the sensor module. S1 switch positioned at:

Position Display Function 0 DP 1 Setpoint level of operating pressure / remaining purge time 1 DIFF A Minimum differential pressure A (purge time) 2 DIFF B Minimum differential pressure B (purge time) 3 MIN A Minimum positive pressure A (switching-off level) 4 MIN B Minimum positive pressure B (switching-off level) 5 MAX Maximum positive pressure (switching-off level operation) 6 MAX 1 Maximum positive pressure (switching-off level purge time) 7 MIN P Pre-alarm 8 K 4 Freely programmable signal relay 9 K 5 Freely programmable signal relay

5.6 Rotary Switches S2 to S4 “Purge time”

The purge time is set with rotary switches S 2 to S 4.

If a purge time of 13 minutes and 40 seconds is to be set, rotary switches S2 to S4 must be set as follows:

Procedure:

Turn the S1 “Display” rotary switch to position “0”.

Place a programming bridge between terminals 23 and 24.

Turn rotary switch S2 to position 1.



Turn the APEX control unit on and off by means of rotary switch S5.

Remove the programming bridge between terminals 23 and 24.

Switch Function S2 Minutes in tens S3 Minutes in units S4 Seconds in tens


Operation


5.7 S5 “ON/OFF” Rotary Switch

The S5 rotary switch is a reset switch and it is used for re-starting the system when adjustments have been made.

Position Function 0 Off / reset 1 On

5.8 K4 and K5 Relays

Various functions can be assigned to the K4 and K5 potential-free relays. The following table shows the possible functions for the K4 and K5 relays:

Value Function 0 Switches simultaneously with K 2/3 relays 1 Switches if the “DIFF A” level is exceeded. 2 Switches if the enclosure pressure is greater than “MIN P”. 3 Switches if the enclosure pressure is greater than “MIN A”. 4 Switches if the enclosure pressure is greater than “MAX”. 5 Switches if the enclosure pressure is greater than “MAX 1”. 6 Switches if the purge time is counting. 7 Switches simultaneously with K1 8 Switches if the key switch is activated 9 Switches if there is any internal malfunctioning.

Commisioning APEX 2003.SI Control Unit Type 07-3711-.2.3/....


6 Commissioning

A T T E N T I O N

- Before switching on for the first time, make sure the operating voltage agrees with the mains voltage.

- An error code will indicate any internal faults that may occur while the APEX control unit is starting up.

- If the error code is due to a fault in the purging gas supply, the fault should be eliminated and the APEX control unit reset by switching it off and on again.

N o t e

Alteration of parameters and settings

Parameter changes are only accepted when the programming bridge is connected to terminals 23 and 24 and the levels have been established by means of a reset with the S5 rotary switch.

Procedure for commissioning a pressurized system:

Before commissioning, check the electrical devices installed inside the pressurized enclosure.

Make sure the pressurized enclosure is purged sufficiently.

The relevant safety regulations and rules must be observed.

Check that the pressurized system functions correctly: o It must be ensured that there is no external voltage in the pressurized

enclosure (including data lines) when the control is deactivated. o In the event of a drop in pressure inside the pressurized enclosure, the fitted

components must be automatically disconnected from voltage (data lines included).

Set the positive operating pressure.

Check the quantity lost through leakage.

Calculate and set the purge time.

Check the purging phase.

Check the operating phase.


Commisioning


6.1 Setting of the Positive Operating Pressure (DP 1)

The DP1 level is the level of positive pressure inside the pressurized enclosure. This level is monitored by the APEX control unit and compensated if necessary.

This level must be adjusted to suit the application.

Control DP1 (standard setting on delivery) 07-3711-3223/**** (high pressure) 100.0 mbar 07-3711-4213/**** (dilution) 3.5 mbar

6.2 Checking the Quantity Lost through Leakage

The manufacturer determines the quality characteristics of a pressurized enclosure. These include the losses from the pressurized enclosure due to leakage and the resistance to positive pressure.

The resistance of the pressurized enclosure must be ensured for the maximum level of positive pressure arising. To check this, the outlet opening is closed (pressure monitor), the positive pressure in the enclosure is simulated and the leakage loss rate is measured.

The measured flow rate must not be greater than the maximum leakage loss specified by the manufacturer.

6.3 Calculation of Purge Time It is assumed in the following that the volume of purging gas is calculated to suit the capacity of the pressurized enclosure (capacity-dependent purge time).

The flow of purging gas at the outlet of the pressurized enclosure is used to calculate the purge time.).

Turn on the APEX control unit.

See the flow diagram in the appendix for the flow rate reached.

Calculate the purge time in accordance with the following formula:

10

60

Set the calculated purge time by means of the S2 to S4 rotary switches.

Switch the APEX control unit off and on again by means of the S5 rotary switch.

Commisioning APEX 2003.SI Control Unit Type 07-3711-.2.3/....


6.3.1 Checking the Purging Phase

N o t e

Safe operation during fluctuations in pressure.

For safe operation (pressure fluctuations), increase the pressure reducer’s setpoint inlet pressure by 0.5 bar.

Check the purge time for the pressurized enclosure as follows:

Set up the pressurized enclosure to be ready for operation.

Activate the APEX control unit.

Activate the purging gas supply. o The “MIN A” and “MIN B” LEDs light up. o The “DIFF A” and “DIFF B” LEDs light up. o The “purge time” LED flashes. o The time shown in the sensor module’s display counts down.

Reduce the purging gas supply by lowering the pressure at the pressure reducer. o The “MIN A” and “MIN B” LEDs go out. o The “DIFF A” and “DIFF B” LEDs go out. o The “purge time” LED is off. o The time shown in the sensor module’s display is reset.

Increase the purging gas supply by raising the pressure at the pressure reducer (max. 3 bar). o The “MIN A” and “MIN B” LEDs light up. o The “DIFF A” and “DIFF B” LEDs light up. o The “purge time” LED flashes. o The time shown in the sensor module’s display counts down. o At the end of the purge time the “OPERATE” LED lights up.

6.3.2 Checking the Operating Phase

Check the operating phase of the pressurized enclosure as follows:

Set up the pressurized enclosure to be ready for operation.

Activate the APEX control unit.

Activate the purging gas supply.

Let the purging phase run. o The “MIN A” and “MIN B” LEDs light up. o The “OPERATE” LED lights up. o Relay K2/3 activates the installed parts.

Reduce the purging gas supply by lowering the pressure at the pressure reducer. o The “MIN A” and “MIN B” LEDs go out. o The “OPERATE” LED goes out. o Relay K2/3 deactivates the installed parts.


Operation


7 Operation

7.1 Safety during Operation

D A N G E R

Damage to the explosion protection measure

If it can be assumed that safe operation is no longer possible, the APEX control unit must be put out of operation and secured against restarting.

7.2 Types of Purging Gas

D A N G E R

Risk of suffocation when using inert gas as a purge gas.

The use of inert gas as a purge gas forces oxygen out of the air.

Stop the supply of purging gas when opening the pressurized enclosure and make sure the escaping purging gas cannot be inhaled directly.

D A N G E R

Risk of explosion when the wrong type of purge gas is used.

The APEX control units described here are control units for “Containment Systems”. An incorrect purge gas can increase the risk of explosion.

Check the purge gas used against the specifications for the entire pressurized system.

Only inert gas or cleaned and dry instrument air may be used as purge gas. In any case, a filter must be placed upstream if the right quality with respect to the absence of foreign particles is not assured.

The following quality characteristic requirements at least should be met by the purge gas:

Residual dust: < 40 µm

Residual water: dew point +3 °C

Residual oil content: 1 mg/m³

Maximum temperature +40 °C



7.3 Operating Phases in the Pressurized Enclosure

The APEX control unit is constructed in conformance to the currently applicable directives and standards and fulfils the requirements specified there. The processes in the respective states are listed in the following.

Operating Phase Requirements Effect

Purging phase

Internal pressure greater than MIN A

Purge time on Internal pressure greater than MIN B Internal pressure less than MAX Min. differential pressure > DIFF A Min. differential pressure > DIFF B

Purge time ended Initiation of the operating phase

Operating Phase

Internal pressure greater than MIN A Pressurized enclosure is enabled

Internal pressure greater than MIN B Internal pressure less than MAX Purge time ended Bridge 19/20 closed

7.4 Operating Phases in a Pressurized Enclosure

The operation of a piece of pressurized operating equipment can be divided into three phases. The three phases break down into the preparatory, purging and operating phase. The three operating phases are explained in the following.

7.4.1 Purging Phase

A T T E N T I O N

Levels exceeding or falling short of setpoint levels

When levels fall below minimum levels for the flow rate and pressure, the purge time in the control module is reset to the initial level and the purging procedure begins again. If a maximum level is exceeded, the protective gas supply is interrupted as long as the pressure is exceeded.

The pressurized enclosure is purged with purge gas in order to remove any explosive gas-and-air mixture inside or to dilute it to a harmless concentration before the possible sources of ignition in the pressurized enclosure are activated.

This process prepares the pressurized enclosure for the operating phase. The necessary purging volume depends on the free capacity in the pressurized enclosure. The purging process is constantly monitored by the sensors in the sensor module and the pressure monitor.

To prevent the pressure inside the enclosure reaching an excessively high level as a result of an impermissibly high flow resistance at the control device’s pressure monitor, the purging gas pressure is restricted during the purge time to the “MAX 1” level. This means when a digital valve is used, the purge gas valve is closed for a short time when the “MAX 1” level is reached (pressure regulation).


Operation


7.4.2 Operating Phase

The Operating Phase begins when the purge gas valve is closed.

The operating pressure must be maintained throughout the entire operation of the pressurized enclosure to prevent the penetration of combustible substances. The electrical installed parts in the pressurized enclosure are connected and activated by means of a relay integrated in the control module.

If the enclosure pressure drops below the set minimum levels during the operating phase, all electrical installed parts in the pressurized enclosure which are not themselves explosion-proof are switched off and the purging process starts again.

7.5 Bypass Operation

D A N G E R

Death or serious physical injury due to commissioning with a bypass key switch in an explosive atmosphere.

Risk of explosion

Have the commissioning with a bypass key switch approved by the factory manager or his appointee. Approval may be given only if it has been ensured that there will not be any explosive atmosphere for the duration of the commissioning or if the necessary precautions have been taken to protect against the risk of explosion (fire permit).

A warning sign informing that the Ex protection will be eliminated if the key switch is activated must be affixed near the key switch.

During the operating phase it may be necessary to change settings on internally mounted components. The APEX control unit provides the bypass function for this purpose. If the bypass mode is activated, it must be ensured that there is no explosive gas in the atmosphere. The concentration of gas in the surrounding atmosphere is determined with a gas detector.

Once the bypass mode is activated, the door of the pressurized enclosure can be opened without interrupting the operation of the internal components. The required settings can be made and once these have been completed, the pressurized enclosure must be closed again. The operation of the pressurized enclosure is not interrupted for this duration. The phase of purging the pressurized enclosure is not repeated.

Maintenance and Care APEX 2003.SI Control Unit Type 07-3711-.2.3/....


8 Maintenance and Care

N o t e

Maintenance intervals

Regular maintenance is not necessary if the device is operated appropriately in compliance with the installation instructions and with due consideration to the ambient conditions:

An inspection in conformance to the “Inspection Table for Commissioning and Maintenance” in Chapter 8.1 is recommended once a year.

A T T E N T I O N

Maintenance and Care

- The currently applicable provisions and the national regulations relating to the upkeep, maintenance and inspection of the operating equipment must be observed!

- Operating and maintenance work may be done by trained specialist personnel only. The statutory regulations and other binding directives relating to workplace safety, accident prevention and environmental protection must be adhered to.

- Live parts can become exposed when covers are opened or parts removed, except where this is possible by hand. Connection parts may be live too.

The “Inspection Table for Commissioning and Maintenance” in Chapter 8.1 serves as a minimum requirement for the maintenance or commissioning of a pressurized enclosure.


Maintenance and Care


8.1 Inspection Table for Commissioning and Maintenance

Item Test point Commission-

ing Mainten-

ance OK OK

1 Visual inspection for damage

2 Attachment of the APEX control unit n/a

3 Diagonal purging of enclosure assured n/a

4 Installed devices attached securely

5 Installed equipment purged sufficiently. n/a

6 Devices with integrated capacitors noted (it may be necessary to affix a sign).

n/a

7 Devices with hot surfaces noted

8 Establishment of equipotential bonding

9 Wiring checked to ensure presence of blue cores or cables in the Ex i area

n/a

10 Wiring checked for conformance to the relevant directives.

n/a

11 “Key switch…” sign affixed wherever there are any key switches.

12 General state of the mounted elements in the pressurized enclosure (device feet, rain shelter, cable glands)

13 Agreement between mains voltage and the connection voltage for the individual devices

n/a

14 Total power consumption of the devices less than the control unit’s maximum switching capacity

n/a

15 Check separation of any data lines. n/a

16 Maximum surface temperature checked n/a

17 Pressure test with 1.5 x Pmax passed, no permanent deformations in the enclosure

n/a

18 Enclosure capacity determined n/a

19 Purging phase checked

20 Switching levels of the APEX control unit checked.

21 Correct functioning of the APEX control unit tested.

22 Correct functioning of any bypass key switch checked.

23 Sign conforming to EN 60079-2 affixed to enclosure.

Malfunctioning and Troubleshooting



9 Malfunctioning and Troubleshooting

It is assumed here that the connection of all external electrical and mechanical units has been carried out in an orderly fashion. For that reason, it should first be checked that the electrical units have indeed been set up and connected properly.

9.1 Fault Table

Fault Possible Cause Remedy

Device is not working, “Mains” LED does not light up

No mains voltage. Check mains voltage supply line.

The electrical devices are connected and activated without purging phase.

Device defective. Return to manufacturer

Key switch turned on Turn off the key switch

The digital purging gas valve switches off briefly during the purging phase

Excessive quantity of purging gas introduced into the pressurized enclosure

Reduce the purging gas nozzle

The “Purge time on” LED does not flash during the purge time

There is no purging gas Connect purging gas.

Purging gas valve does not open or opens only partially

Check purging gas valve for supply voltage (terminals 31 to 33)

Check purging gas valve for foreign particles in the mechanical part

Insufficient purging gas flow through the Ex p enclosure.

Increase input pressure to setpoint level

Check purging gas nozzle for correct level

Check the control unit’s “DIFF A”, “DIFF B”, “MIN A” and “MIN B” setpoint levels.

Increase the cross section in the purging gas supply line

The target pressure for the pressure reducer is not reached.

Purging gas supply too low. Increase the cross section of the supply line.

The pressure monitor for the control unit is inadmissibly blocked or restricted.

Remove the blockage or take suitable measures to eliminate the restriction.

Enclosure leaks during the purging phase due to an increase in internal pressure.

Use suitable measures to seal the enclosure.




Fault Possible Cause Remedy

The control unit does not connect the electrical devices after the purging phase.

“MAX” switching level too low. Check the “MAX” switching level.

Pressurized enclosure is leaking. Turn on the “MIN A” and “MIN B” pressure switches.

Seal the pressurized enclosure.

The control unit switches the electrical devices off after the purge time with a 5-second time delay.

The “MIN A” or “MIN B” switching level is too high.

Check the “MIN A” or “MIN B” switching level.

Configuration of K 4 or K 5 Check the configuration of the K4 or K5.

Relays K4 or K5 do not connect.

The enclosure is leaking. The purging gas valve is trying to maintain the internal pressure by opening the purging air nozzle.

Seal the enclosure or enlarge the passage in the air leakage nozzle.

The electrical devices do not switch off when the pressure drops.

Key switch turned on. Turn off the key switch.




9.2 Error Code Table

N o t e

Maintenance intervals

An error code will indicate any internal faults that may occur while the APEX control unit is starting up.

If the error code is due to a fault in the purging gas supply, the fault should be eliminated and the APEX control unit reset by switching it off and on again.

Error Code Error Description Remedy

(1) Memory: The cause of the error lies in the memory area.

Use the S5 rotary switch to reset the APEX control unit. If this measure is not successful, send the control unit back to the manufacturer.

(2)

Difference between Min A and Min B: the difference measured between the Min A and Min B pressure levels is too large

Check the measuring leads. They could be bent or dirty (e.g. with oil).

(3)

MUX/AD: The cause of the error lies in the area of the Multiplexer control or the analog/digital conversion.


(4)

SITRANS: The cause of the error lies in the area of the opt. pressure switch connections.

Check the connections.

(5) EEPROM: The cause of the error lies in the area of the internal EEPROM.


(6) RAM: The cause of the error lies in the area of the internal RAM modules.


(7)

MAX 1 less than MIN: The cause of the error lies in the setting of the minimum and maximum levels whereby the maximum level was set lower than the minimum level.

Check the setpoint values.

(8)

P > max in purge time: The internal pressure in the Ex p operating equipment exceeds the maximum setpoint level.

Reduce the supplied purging gas pressure.


Technical Data


10 Technical Data

10.1 General Technical Data for the APEX Control Unit

Parameters Specifications Ex protection type (ATEX) II 2(1)G Ex de ib [ia Ga px] IIC T4 Gb Certification DMT 99 ATEX E 082 Mains voltage AC 230 V or AC 115V (variant-dependent) Overvoltage category III Degree of protection IP 65 Connecting terminals max. 2.5 mm², fine-wired Ambient temperature operation -20 °C to +40 °C Ambient temperature storage and transport

-20 °C to +60 °C

Air humidity <90 % rel. humidity

Construction Ex e protective enclosure with a viewing window in the lid

Enclosure material Glass-reinforced polyester Purging gas medium Cleaned industrial compressed air or inert gas Input pressure of purge gas 2-3 bar (0.2…03 MPa)

Input pressure connection Pressure regulator ¼″ with pressure gauge (stainless steel)

Purge gas connection R1/4″ internal thread (stainless steel) Length of purge gas line max. 5 m Relay contacts

Relay K2/3 Switching capacity maximum 5 A at cos φ= 1/AC 250 V; dropout delay 5 seconds; additional fuse required; non-floating (=supply voltage)

Relays K4 and K5 Switching capacity maximum 5 A at cos φ= 1/AC 250 V; no dropout delay; floating

Cable glands 2 x M25x1.5 blue / 8 x M25x1.5 black Clamping area 6 to 13 mm

Technical Data APEX 2003.SI Control Unit Type 07-3711-.2.3/....


10.2 Supplementary Technical Data for the APEX 2003.00SI Control Unit (High Pressure)

Parameters Specifications Type 07-3711-3223/…. Weight 14.5 kg Dimensions 400 [W] x 250 [H] x 120 [D] mm Dimensions borehole pattern 380 [W] x 200 [H] mm Installation remote Sensor module internal Pressure monitor internal Bypass key switch internal Pressure levels Differential pressure levels 0-25 mbar (0-25 hPa) MIN/MAX 0-300 mbar (0-300 hPa) Purge time 0…99 minutes Flow rate 0 to 4,5 m³/h

10.3 Supplementary Technical Data for the APEX 2003.00SI Control Unit (Dilution)

Parameters Specifications Type 07-3711-4213/…. Weight 10.6 kg Dimensions 400 [W] x 250 [H] x 120 [D] mm Dimensions of the borehole pattern

380 [W] x 200 [H] mm

Installation remote Sensor module internal Pressure monitor internal Bypass key switch internal Pressure levels Differential pressure levels 0-25 mbar (0-25 hPa) MIN/MAX 0-25 mbar (0-25 hPa) Purge time 0…99 minutes Operating flow Set to 1.6 litre/minute Flow rate 0 to 4,5 m³/h


Order Numbers


11 Order Numbers

11.1 APEX 2003.SI Control Units

APEX 2003.SI control unit high pressure, 0-300 mbar AC 230 V with cradle relay 07-3711-3223/1002

AC 230 V 07-3711-3223/1003

AC 115 V with cradle relay 07-3711-3223/2002

AC 115 V 07-3711-3223/2003

APEX 2003.SI control unit dilution, 0-25 mbar AC 230 V 07-3711-4213/1001

AC 115 V 07-3711-4213/2001

11.2 Accessories and Spare Parts

11.2.1 Sensor Module

Sensor module for use with an APEX 2003.SI control unit 0-25 mbar, fitted device 17-51P2-1100

0-300 mbar, fitted device 17-51P2-1200

11.2.2 Pressure Reducer

Pressure reducer, 0.5-6 bar Size ¼″, stainless steel 03-5110-0008

Pressure gauge for pressure reducer G1/4″ 03-5110-0048

11.2.3 Accessories

Accessories for the APEX control unit Programming bridge 05-0012-0193

Rain protection cap 05-0032-0011

11.2.4 Control Module

Spare Parts for the APEX control unit Ex p control, control module, AC 230 V 07-7331-8112/1100

Ex p control, control module, AC 115 V 07-7331-8122/1100 Note: only available as a spare part, quoting type and serial number of the APEX control unit.

Test Report APEX 2003.SI Control Unit Type 07-3711-.2.3/....


12 Test and Assessment Report Form

Product designation :

Customer :

Type :

Order number :

Manufacturing no. :

Input voltage :

Valve type : Digital valve Prop. valve DN2 Prop. valve DN6

Measuring orifice :

Settings

Level S1 rotary switch

Description Code Switching level

DP 1 0 Positive operating pressure level between

enclosure and atmosphere D

DIFF A 1 Minimum differential pressure during the purging phase in the pressure monitor

Q

DIFF B 2 Minimum differential pressure during the

purging phase in the pressure monitor module R

MIN A 3 Minimum positive pressure between enclosure

and atmosphere (disconnection threshold) A

MIN B 4 Minimum positive pressure between enclosure

and atmosphere (disconnection threshold) P

MAX 5 The max. positive pressure between enclosure

and atmosphere (disconnection threshold) B

MAX 1 6 The max. positive pressure between enclosure

and atmosphere during purging C

MIN P 7 Pre-alarm F

Relay S1 rotary

switch Description Code

Switching level

K4 8 Function of the K4 relay N

K5 9 Function of the K5 relay O

Purge time

S2 rotary switch 10-minute steps

S3 rotary switch 1-minute steps

S4 rotary switch 10-seconds steps

Test for correct functioning

Sensor module Functioning tested

Pressure monitor module Functioning tested

APEX control module Functioning tested


Test Report


Extended parameters (may be changed only by the manufacturer)

Display Display orientation in the sensor module

1 = Sensor module after 2004 2 = Sensor module up to 2004

Version Pressure range for the sensor module 1 = 0-25 mbar 2 = 0-300 mbar

Valve type 0 = Digital valve 1 = Proportional valve

P component Proportional component control valve

I component Integral component control valve

Zero point Valve’s response level

Time delay K2/3 time delay as of the MIN A or MIN B signal

ON / OFF function Function of terminals 19 and 20

1 = Bridge / switch at terminals 19/20 2 = Printer function

MAX. function Positive pressure disconnection

1 = Error when “MAX” is exceeded

2 = No error when “MAX” is exceeded

Text marking

Date:

Tested by:

Checked by:

Appendix APEX 2003.SI Control Unit Type 07-3711-.2.3/....


13 Appendix

13.1 Purging Gas Diagram for the APEX 2003.SI (Type: 07-3711-3223/....)

P [mbar]

Q [l

/h]


Appendix


13.2 Purging Gas Diagram for the APEX 2003.SI (Type: 07-3711-4213/....)

P [mbar]

Q [l

/h]

Declarations of Conformity and Approvals



14 Declarations of Conformity and Approvals

14.1 EC Declaration of Conformity for the APEX Control Unit




14.2 EC Type Examination Certificate for the APEX Control Unit

Notes APEX 2003.SI Control Unit Type 07-3711-.2.3/....


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BARTEC protects

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of components,

s y s t e m s

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BARTEC GmbH Germany

Max-Eyth-Straße 1697980 Bad Mergentheim

Phone: +49 7931 597-0Fax: +49 7931 597-119

[email protected]

20140319 01-3711-7d0004 ba apex2003si en a - …apex 2003.si control unit type 07-3711-.2.3/.......

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