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1. a Hi H oo M H 4 M 5 Ir M M M 24 n OUS UU Position Designation m Purge gas flow Pressurised enclosure SILAS control unit Pressure reducer with pressure gauge o 000 Pressure monitor module Techncal data subject to change without notice Page 13 of 68 inti SILAS Control Unit Product Description Typo AT 3041 1 401 2 5 SILAS Control Unit Processes with high electromagnetic radiation The SILAS control unit must not be mounted in areas in which high levels of electromagnetic radiation can arise gt Inspect the site of installation for electromagnetic radiation The SILAS control unit can be mounted inside or outside the pressurised enclosure For internal installation e g on the mounting plate it will also be necessary to use the internal installation kit gt The system pressure levels and the system parameters can be shown on the integrated display inside the control unit The levels can be changed by pressing pushbuttons Construction Item Designation Function Q Topenclosure Control unit Bottom enclosure Junction box Cable glands Cable entry O Pressure measuring head Pressure measurement Page 14 of 68 Technical data subject to change without notice SILAS Control Unit e Type A7 3741 1110 rodet Beseripuon 2 6 Pressure Monitor DANGER due to deposits of dust When used in Dust Ex ap
2. i SILAS Control Unit in Type A7 3741 1110 3 5 1 Installation of the G1 4 Purge Gas Supply The purge gas supply must be installed carefully To ensure that the screwed parts are leak tight they can be sealed with Teflon tape Care must be taken to prevent the penetration of foreign particles during assembly Procedure e Make a 17 mm diameter borehole at the mounting position provided for that purpose in the pressurised enclosure O e Mount the purge gas valve 6 onto the pressurised enclosure using the reducing sleeve and the sealing washers e Screw in the purge gas nozzle 9 at the purge gas valve outlet 6 e Screw the detachable double threaded nipple into the reducing sleeve 8 e Screw the G1 4 pressure reducer onto the detachable double threaded nipple Q Item Material Purge gas nozzle with borehole Purge gas valve Sealing washer Pressurised enclosure G1 4 i G3 8 a reducing sleeve G1 4 detachable double threaded nipple on both ends 9 000 0 G1 4 pressure reducer Page 26 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 neuen 3 9 2 Mounting of the G1 2 Purge Gas Supply The purge gas supply must be installed carefully To ensure that the screwed parts are leak tight they can be sealed with Teflon tape Care must be taken to prevent the penetration of foreign particles during assembly Bo
3. Troubleshooting Fault Possible Cause Remedy The digital purge gas Internal pressure drops below P2 Fix leaks valve does not switch Losses through leakage are too over to the small high nozzle after the purging phase Control unit switches The leakage air needle for the Increase the air flow rate electrical devices off digital valve is too small in the leakage air needle With 5 sec time delay after the purge time Digital purge gas Internal pressure drops below P2 Increase the leakage air valve connects briefly compensation during the operating phase The electrical devices Bypass activated Deactivate bypass do not switch off when the pressure drops Techncal data subject to change without notice Page 49 of 68 SILAS Control Unit Linken Type A7 3741 1110 10 Technical Data 10 1 10 2 SILAS Control Parameters Ex protection type SILAS Statement of Conformity Ex protection type IECEx IECEx certification Ambient temperature storage and transport Ambient temperature operation Purge gas medium SILAS Control Unit Parameters Type Dimensions Mains voltage Max power consumption K1 relay K2 and K3 relays Pressure range Tolerance range Purge time Connection terminals Weight Protection class Page 50 of 68 Specifications 9 3G Ex nA nC pz IIC T4 Gc amp 3G Ex nA nC pz IIC T6 Gc 3D Ex tc p IIIB T85 C Dc TUV 09 SILAS 5533
4. Page 62 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Declaration of Conformity and Approval 13 3 IECEx Certificate of Conformity IECEx Certificate of Conformity INTERNATIONAL ELECTROTECHNICAL COMMISSION IEC Certification Scheme for Explosive Atmospheres for rules and details of the IECEx Scheme visit www lecex com Certificate No IECEx TUN 10 0030X issue No 1 Certificate history Issue No 1 2012 9 14 10 11 Status Current Issue No a m 0 1 Date of Issue 2012 09 14 Page 1 of 4 Applicant BARTEC GmbH Max Eyth Stra e 16 97980 Bad Mergentheim Germany Electrical Apparatus Control System SILAS Optional accessory Pressurized apparatus p Electrical apparatus with type of protection n Protection by Type of Protection enclosures t Marking Ex nA nC pz IIC T4 Gc Ex nA nC pz IIC T6 Gc Ex tc p IIIB T85 C Dc Approved for issue on behalf of the IECEx Karl Heinz Schwedt Certification Body Position Head of the ExCB Signature for printed version z 4 Date iD as he 1 This certificate and schedule may only be reproduced in full 2 This certificate is not transferable and remains the property of the issuing body 3 The Status and authenticity of this certificate may be verified by visiting the Official IECEx Website TUV NORD CERT GmbH f Hanover Office Am TUV 1 30519 Hannover Samary TUV NORD Certificate issued by Techncal da
5. SILAS Contr leur SILAS Steuerung SILAS A7 3741 1110 auf das sich diese Erkl to which this declaration se r f rant cette attesta rung bezieht den Anforde relates is in accordance tion correspond aux dis rungen der folgenden with the provision of the positions des Richtlinien RL following directives D directives D suivantes entspricht ATEX Richtlinie ATEX Directive ATEX Directive 94 9 EG 94 9 EC 94 9 CE EMV Richtlinie EMC Directive CEM Directive 2004 108 EG 2004 108 EC 2004 108 CE und mit folgenden Normen and is in conformity with et est conforme aux oder normativen Doku the following standards or normes ou documents menten bereinstimmt other normative docu normatifs ci dessous ments IEC 60079 0 2011 EN 60079 31 2009 EN 61000 6 3 2007 EN 60079 2 2007 EN 61241 4 2006 EN 60529 1991 EN 60079 15 2010 EN 61000 6 2 2005 A1 2000 Kennzeichnung Marking Marquage II 3G Ex nA nC pz IIC T4 Gc Il 3G Ex nA nC pz IIC T6 Gc II 3D Ex tc p IIIB T85 C Dc Verfahren der Procedure of Proc dure de internen Fertigungs internal control of contr le interne de kontrolle Production fabrication T V 09 ATEX 553359 Bad Mergentheim den 2 D ais Mm EA wald Warmuth Gesch ftsleitung General Manager 03 0383 0289 Techncal data subject to change without notice Page 57 of 68 DHE A una SILAS Control Unit and Approval Type A7 3741 1110 13 2 Statement of Conformity Tran
6. purging phase is initiated Page 42 of 68 Technical data subject to change without notice Steuerger t SILAS 7 4 Purging Phase Attention Interruption of the purge time If the pressure levels drop below or exceed the specified pressure setpoints the purge time for the SILAS control unit stops gt Check the purge gas supply gt Check the control unit settings The pressurised enclosure is purged with the 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 pressurised enclosure are activated This process prepares the pressurised enclosure for the operating phase The required quantity of purging medium depends on the free capacity in the pressurised enclosure The purging process is constantly monitored by the sensors in the sensor module and the pressure monitor Purging phase sequence The purge gas flow is increased by opening the purge gas valve The plate integrated in the pressure monitor is raised P1 minimum pressure switching level P3 purging pressure levels are exceeded The purge time in the display counts down The purge gas valve closes after the end of the purge time Operating phase The operating phase starts when the purge gas valve closes The operating pressure must be maintained throughout the entire operation of the pressurised enclosure to preve
7. parameters Exception 9 position in bypass operation e Put the top cover on again and tighten the fastening screws again Techncal data subject to change without notice Page 33 of 68 Commissioning SILAS Control Unit Type A7 3741 1110 6 1 General Settings for Commissioning 6 1 1 Purging Function 6 1 2 K3 Relay Page 34 of 68 Various purging functions can be assigned to the SILAS control unit to suit the application The behaviour of the SILAS control unit changes depending on the purging function selected The following table shows the possible functions Program PRG YES PRG YP1 PRG YP2 PRG YP3 PRG NO Purge time necessary Yes Yes Yes Yes No Functions K2 switches off Purge time Purge time a starts when P1 stops once P4 TRA URS is exceeded is reached p p below the P1 level No No No Yes No No Yes No Yes Yes Yes No No No No Various functions can be assigned to the floating K3 relay The following table shows the possible functions Level K2 P1 P1 P2 P2 P3 P4 PT BYP ALR Release MIN alarm MIN alarm Preliminary alarm Preliminary alarm Purging pressure Max alarm Purge time Bypass Functions alarm Function Switches simultaneously with K2 Switches on if the P1 pressure switching level is exceeded Switches on if the level drops below the P1 pressure switching level Switches on if the P2 pressure switching
8. 1110 12 Appendix 12 1 Borehole Pattern for the SILAS Control Unit 20 5 mm Page 54 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Appendix 12 2 Test and Assessment Report Form Test report checklist for Ex pz pD operating equipment Installation of the Ex p operating equipment in _ Zone 2 Ex pz Zone 22 Ex pD Characteristics of the Ex pz pD operating equipment Serial number Mains voltage Power dissipation Manufacturing 0 not there 1 is there Emm o 0 0 om nozzle Type of function Compensation of leakage losses 1 constant purging 2 NENNEN Purging medium Instrument air 1 Inert gas 2 Capacity of the Ex pz pD operating equipment Dimensions Wx Hx D Purge gas flow rate In accordance with the diagram the purge gas flow rate during the purging phase at mbar enclosure pressure und litres h bar input pressure at the input valve switch pressure reducer Determination of purging time after calculation based on diagram Using the flow diagram _ fold purging volume the purging time calculated was seconds Techncal data subject to change without notice Page 55 of 68 SILAS Control Unit n Type A7 3741 1110 Page 56 of 68 Characteristics of the SILAS control unit Rotary switch S2 in position Parameters Description Switching level The type of function must be selected as in FUNG
9. inside of the enclosure This creates an Ex free area in which electrical devices that are not themselves explosion proof can be installed and operated The SILAS control unit described in these operating instructions functions with pressurised enclosure with leakage loss compensation technology Specifically this means that the positive pressure in an enclosure is maintained by the addition of purge gas to compensate for the leakage losses from the enclosure To ensure that an explosive atmosphere that has penetrated during downtimes cannot become a danger the enclosure must be flushed with purge gas compressed air or inert gas before it is commissioned The quantity depends on the inspection during first time operation The rate of flow is measured or determined at the pressurised enclosure s outlet Since a safe condition in the enclosure is not reached until the beginning of the operating phase it is necessary to use explosion proof versions of the SILAS controller with its components and the purge gas valve 2 2 SILAS Controller Die SILAS controler is an automatic control for monitoring the pressure of the pressurised control cabinets in the hazardous areas of Zone 2 Ex pz or 22 Ex pD It consists of the SILAS control unit the SILAS pressure monitor a digital purge gas valve and a pressure reducer The SILAS controller is suitable for all standard applications for pressurised enclosures The electrical installed parts insi
10. of a control device type A7 3741 1 0 and a pressure controller type 17 51P3 1604 A pressurised device which is equipped with the control system has to be assessed as a pressurised apparatus The pressure controller is only for the assembly with a device according to devices of group Il category 3 and will be protected against mechanical damage and ultraviolet light by installation Technical data The maximum permissible ambient temperature for the control system depending on the temperature class has to be taken from the following table Temperature class 0 C to 40 C T6 0 C to 60 C T4 Permissible ambient temperature range Permissible temperature range of the protective gas 0 C to 40 C Permissible ambient temperature range 0 C to 80 C pressure controller For the control system with the control device type A7 3741 1 0 1 SUBDIV CHOU aissis Nominal voltage 230 V a c Terminals 7 8 and 9 10 11 For the control system with the control device type A7 3741 1 0 2 SUOM ON inne Nominal voltage 115 V a c Terminals 7 8 and 9 10 11 For the control system with the control device type A7 3741 1 0 4 SUPO DIDI ac xscexsmscwensanereqmensnensnes Nominal voltage 24 V d c Terminals 7 8 and 9 10 11 page 2 3 Techncal data subject to change without notice Page 59 of 68 and Approval Page 60 of 68 DHE Wma iam SILAS Control Unit Type A7 3741 1110 Sch
11. on the pressure reducer C eg 2 bar Leave the leakage air needle on the purge gas valve at the pre set level e Close the pressurised enclosure e Connect the mains voltage and set the ON OFF rotary switch on the SILAS control unit to position 1 e Reduce the P3 level until the purging phase starts to run C e g 1 0 mbar Wait for the purging phase and set the Parameters rotary switch to position 0 e he operating pressure builds up and settles at a level which is shown in the SILAS control unit display This should be kept at a constant level of approx 2 0 mbar e Ifthere is a drop in minimum pressure increase the flow at the leakage air needle e If there is anincrease in the minimum pressure reduce the flow at the leakage air needle Techncal data subject to change without notice Page 35 of 68 Commissioning SILAS Control Unit Type A7 3741 1110 6 2 2 Determination of the purging pressure To determine the purging pressure close the pressurised enclosure and put the SILAS control unit into operation Procedure 6 2 3 Purge time Calculate Page 36 of 68 Set the ON OFF rotary switch to position 1 Set the Parameters rotary switch to position 5 Use the Plus key on the SILAS control unit to increase the P3 setpoint and confirm with the SET key C e g 15 mbar Set the Parameters rotary switch to position 0 Connect the purge gas and set the required input pressure on th
12. set Procedure e Set up the pressurised enclosure to be ready for operation e Activate the SILAS control unit e Activate the purge gas supply e Once the internal pressure has built up the pressurised enclosure is ready for operation o The K2 LED lights up the K2 relay activates fitted components inside the pressurised operating equipment Techncal data subject to change without notice Page 39 of 68 iceinni SILAS Control Unit Type A7 3741 1110 6 4 Adjusting the Leakage Air Needle The leakage air needle for the digital purge gas valve must be adjusted during commissioning or when altering the leakage air quantity Procedure Revolution Page 40 of 68 Set the ON OFF rotary switch to position 1 Set the Parameters rotary switch to position 0 Set the required input pressure on the pressure reducer Let the purge time for the SILAS control unit count down Do not alter the leakage air needle on the purge gas valve The internal pressure at that particular moment is shown in the display o C If there is a drop in pressure increase the flow at the leakage air needle o Us Ifthere is an increase in pressure reduce the flow at the leakage air needle Increase the flow at the leakage air needle Use a small 2 mm screwdriver to turn the screw in the leakage air needle in 74 revolutions in an anti clockwise direction Check the internal pressure again to determine if t
13. standards serve as a basis for the SILAS control unit Standard IEC 60079 0 2001 1 EN 60079 2 2007 IEC 60079 2 5 Ed EN 60079 15 2010 IEC 60079 15 4 Ed EN 60079 31 2009 IEC 60079 31 18 Ed EN 61241 4 2006 IEC 61241 4 1st Ed EN 61000 6 2 2005 IEC 61000 6 2 2nd Ed EN 61000 6 3 2007 IEC 61000 6 3 2nd Ed EN 60529 1991 A1 2000 IEC 60529 2 1 d Ed Techncal data subject to change without notice Designation Electrical apparatus for explosive gas atmospheres Part 0 General Requirements Explosive Atmospheres Part 2 Equipment protection by pressurised enclosure kn p Electrical apparatus for explosive gas atmospheres Part 15 Construction test and marking of type of protection n electrical apparatus Explosive Atmospheres Part 31 Equipment dust ignition protection by enclosure t Electrical apparatus for use in the presence of combustible dust Part 4 Type of protection pD Electromagnetic Compatibility EMC Part 6 2 Generic standards Immunity for Industrial environments Electromagnetic Compatibility EMC Part 6 4 Generic standards Immunity for residential commercial and light industrial environments Degrees of protection provided by enclosures IP code Page 9 of 68 SILAS Control Unit f Type A7 3741 1110 1 7 Ex Protection Type and Certification 1 8 Warranty Page 10 of 68 The following markings showing Ex protection and certificatio
14. t Edition 1 IEC 61241 4 2001 Electrical apparatus for use in the presence of combustible dust Part 4 Type of Edition 1 protection pD This Certificate does not indicate compliance with electrical safety and performance requirements other than those expressly included in the Standards listed above TEST amp ASSESSMENT REPORTS A sample s of the equipment listed has successfully met the examination and test requirements as recorded in Test Report DE TUN ExTR10 0032 01 li m DE TUN QAR06 0017 04 Page 64 of 68 Technical data subject to change without notice SILAS Control Unit Declaration of Conformity Type A7 3741 1110 and Approval IECEx Certificate of Conformity Certificate No IECEx TUN 10 0030X Date of Issue 2012 09 14 Issue No 1 Page 3 of 4 Schedule EQUIPMENT Equipment and systems covered by this certificate are as follows For description and technical data see attachement CONDITIONS OF CERTIFICATION YES as shown below The device must not be used in the presence of processes which are strongly generating charge Techncal data subject to change without notice Page 65 of 68 DHE A una SILAS Control Unit and Approval Type A7 3741 1110 IECEx Certificate of Conformity Certificate Mo IECEx TUN 10 0030X Date of Issue 2012 08 14 Issue Ne 1 Page 4 of 4 DETAILS OF CERTIFICATE CHANGES for issues 1 and above The pressure sensor the minimum permissible ambie
15. 0 um Residual water dew point 3 C Residual oil content 1 mg m Maximum temperature 40 C Techncal data subject to change without notice Page 41 of 68 SILAS Control Unit Type A7 3741 1110 7 Operation 7 1 Operating Phases of the SILAS Controller for Zone 2 The operation of a pressurised enclosure constructed for explosive gas atmospheres can be divided into three phases The three phases break down into the preparatory purging and operating phases 7 2 Flow Diagram Operating phase Requirements Effect Mains voltage connected Internal pressure less than P4 and Preparatory phase greater than P1 Purge time set Initiation of the Internal pressure greater than P3 Internal pressure less than P4 Purge time on Purging pilas Initiation of the operating Purge time ended phase Internal pressure greater than P1 Operating phase Internal pressure less than P4 bcn enclosure Purge time ended enabled 7 3 Preparatory Phase The preparatory phase begins when the supply voltage for the SILAS control unit is switched on and the purge gas supply starts The purge gas flows through the purge gas valve into the pressurised enclosure Preparatory phase sequence The influx of purge gas increases the pressure inside the pressurised enclosure The P1 minimum pressure in the enclosures is exceeded The purge gas valve is opened by means of the SILAS control unit The next phase the
16. 2 relay is activated Techncal data subject to change without notice Page 37 of 68 Commissioning 6 2 5 Page 38 of 68 SILAS Control Unit Type A7 3741 1110 Checking the Operating Phase When commissioning the pressurised enclosure it is necessary to check the individual operating phases For this purpose all preceding work steps must be completed The operating pressure leakage compensation and purge time must be set Procedure Set up the pressurised enclosure to be ready for operation Activate the SILAS control unit Activate the purge gas supply Let the purge time count down o The K2 LED lights up the K2 relay activates fitted components inside the pressurised piece of operating equipment Reduce the purge gas supply by lowering the pressure at the pressure reducer o The purge time in the display on the SILAS control unit is stopped o The K2 LED goes out the K2 deactivates fitted components inside the pressurised piece of operating equipment Technical data subject to change without notice Steuerger t SILAS HH 6 3 Commissioning of the SILAS Controller for Zone 22 Procedure for commissioning e Before commissioning check the electrical devices installed inside the pressurised enclosure e Make sure the pressurised enclosure is purged sufficiently e The relevant safety regulations and rules must be observed e Select and set the PRG NO purging variant See Chapt
17. 59 Ex nA nC pz IIC T4 Gc Ex nA nC pz IIC T6 Gc Ex tc p IIIB T85 C Dc IECEx TUN 10 0030X 20 C to 60 C 20 C to 60 C T4 20 C to 40 C T6 Cleaned industrial compressed air or inert gas Specifications A7 3741 1110 000 110 x 188 x 55 5 mm WxHxD AC 230 V AC 115V or DC 24 V variant dependent 8 watts Up tO Tambiant 40 C Max AC 253V 5 A cos 0 7 Up to Tambien 60 C Max AC 253V 0 5 A cos 0 7 Up to Tambient 60 C Max AC 253V 0 5 A cos 0 7 0 to 25 mbar for all pressure switching levels 0 5 to 1 0 throughout entire measuring range 0 to 60 minutes adjustable Max 2 5 mm 1 2 kg Min IP 54 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Tepunicar Bata 10 3 Pressure Monitor Parameters Specifications Type 17 51P3 1604 Dimensions 59 X 70 x 57 mm WxHxD Opening pressure 3 mbar Mounting borehole 37 mm Weight Approx 0 2 kg Ambient temperature storage 20 C to 80 C Ambient temperature operation 20 C to 80 C See product data sheet for more technical data 10 4 Digital Purge Gas Valve with Leakage Air Needle Valve Parameters Specifications Type 03 5110 00 Ex protection type 3G Ex nA II TA Mains voltage AC 230 V AC 115V or DC 24 V variant dependent Dimensions 50 x 118 x 48 mm WxHxD Valve connection G 3 8 Nominal diameter 6 mm Pressure range 0 to 4 bar Mounting borehole 17
18. BARTEC BARTEC Steuerung SILAS ui IG Ex nA nC pz IIC T4 C Ta 60 C Ex 113G Ex nA nC pz IIC T6 UC Ta 40 C II3D Ex tD pD A22IP 54 T85 C 0 C Ta 60 C T V 09 ATEX 553359 SILAS Steuergerat Typ A7 3741 1110 1000 Fert Nr 500 09 UN AC 230 V Luft oder Inertgas nur zu verwenden mit SILAS Druckwachter Typ 17 51P3 1604 Operating instructions SILAS Controller Control unit Type A7 3741 1110 Pressure monitor Type 17 51P3 1604 Document no A1 3 41 7D0001 Version 31 March 2014 Rev B BARTEC GmbH Max Eyth Stra e 16 97980 Bad Mergentheim Germany Tel Fax 49 7931 597 0 49 7931 597 119 BARTEC Operating Instructions SILAS controller Control unit Type A7 3741 1110 Pressure monitor Type 17 51P3 1604 Document no A1 3741 7D0001 Version 31 March 2014 Rev B Contents Germany English 1 68 Appendix EC Declaration of Conformity EC Type Examination Certificate info bartec de Reservation Technical data subject to change without www bartec de notice Changes errors and misprints may not be used as a basis for any claim for damages SILAS Control Unit Type A7 3741 1110 1 1 1 1 1 1 2 1 3 1 3 1 1 3 2 1 4 1 9 1 9 1 1 5 2 1 6 1 7 1 8 2 1 2 2 2 3 2 4 2 5 2 6 2 1 2 8 2 9 2 10 2 11 3 1 32 32 3 22 33 3 3 1 3 3 2 333 3 4 3 5 3 5 1 3 5 2 3 5 3 4 4 1 4 1 1 4 2 4 2 1 4 2 2 4 2 3 Safety This Manual L
19. Control Unit 3 4 Mounting Pressure Monitor Death or risk of injury due to excessive internal pressure in the pressurised enclosure The enclosure can be destroyed gt Make sure the outlet threaded connection is not covered from the outside gt Check if the direction of flow in the pressure monitor is from the inside to the outside A through hole of 37 mm in the wall of the pressurised enclosure is required for mounting the pressure monitor Procedure e Make a 37 mm diameter borehole at the mounting position provided for that purpose in the pressurised enclosure e Unscrew the outlet threaded connection out of the pressure monitor enclosure 6 e Putthe pressure monitor enclosure on in a position which ensures that the air inside the pressurised enclosure can flow outwards e Screw the pressure monitor module together e Tighten the outlet threaded connection 9 and the pressure monitor enclosure until the pressure monitor module is positioned securely The following diagram is intended to clarify the installation procedure Direction of flow Page 24 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Installation 3 5 Purge Gas Supply Attention Material damage caused by the absence of a purge gas nozzle Due to the build up of internal pressure there is a risk of excessive strain on the pressurised enclosure gt Check ifthe purge gas no
20. G3 8 Purge gas nozzle d 5 5 mm and 7 7 AC 230 V NC Digital valve with leakage air needle valve G3 8 Purge gas nozzle d 2 8 mm and 3 9 AC 115 V NC Digital valve with leakage air needle valve G3 8 Purge gas nozzle d 5 5 mm and 7 7 AC 115 V NC Digital valve with leakage air needle valve G3 8 Purge gas nozzle d 2 8 mm and 3 9 DC 24 V NC Digital valve with leakage air needle valve G3 8 Purge gas nozzle d 5 5 mm and 7 7 DC 24 V NC Pressure reducer 1 4 0 5 6 bar max 0 5 m h with attachment parts Pressure reducer 1 2 0 5 6 bar max 50 m h with attachment parts Pressure reducer in stainless steel version Adjustable Purge Gas Nozzle for Zone 22 Purge gas nozzle 1 4 with attachment parts Pressure reducer 1 2 with attachment parts 11 1 SILAS Control Unit 11 2 Pressure Monitor 11 3 11 3 1 Digital Purge Gas Valve 11 3 2 Pressure Reducer 11 3 3 11 3 4 Accessories for the SILAS Control Mounting set for mounting the SILAS control unit inside the pressurised enclosure Techncal data subject to change without notice A7 3741 1110 1000 A7 3741 1110 2000 A7 3741 1110 4000 A7 3741 1110 1001 A7 3741 1110 2001 A7 3741 1110 4001 17 51P3 1604 03 51 10 0026 03 5110 0027 03 51 10 0028 03 51 10 0030 03 51 10 0029 03 51 10 0031 05 0056 0007 05 0056 0041 on request 05 0056 0062 on request 05 0091 0117 Page 53 of 68 i SILAS Control Unit Appendix Type A7 3741
21. Inspection Table for Commissioning and Maintenance Malfunctioning and Troubleshooting Fault Table Technical Data SILAS Control SILAS Control Unit Pressure Monitor Digital Purge Gas Valve with Leakage Air Needle Valve Requirements for Purge Gas SILAS Control Purge Gas Diagram Order Numbers SILAS Control Unit Pressure Monitor Accessories and Spare Parts Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 11 3 1 11 3 2 11 3 3 11 3 4 12 12 1 12 2 13 13 1 13 2 13 3 Digital Purge Gas Valve Pressure Reducer Adjustable Purge Gas Nozzle for Zone 22 Accessories for the SILAS Control Appendix Borehole Pattern for the SILAS Control Unit Test and Assessment Report Form Declaration of Conformity and Approvals Declaration of Conformity Statement of Conformity IECEx Certificate of Conformity Technical data subject to change without notice Table of Contents SILAS Control Unit Type A7 3741 1110 1 Safety 1 1 This Manual Operating Instructions A It is essential to read and observe the contents of this documentation and this chapter in particular before you install and operate the SILAS 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 instruct
22. S Control Unit Death or serious physical injury when the cover on the SILAS control unit is opened in an explosive atmosphere Risk of explosion Before opening the lid of the enclosure check the atmosphere for any explosive gases Attention Short circuits due to loose or protruding wires in the SILAS control unit The SILAS controller can become damaged gt All core wires including those not required must be connected to a terminal Make sure none of the wires are loose or jut out protrude The following describes the procedure for feeding and connecting wires to the SILAS control unit Procedure e Loosen the 4 fastening screws in the lower lid of the SILAS control unit and take off the lid e Feed the supply data and enable line through the cable glands into the junction box e Establish the electrical connections in accordance with the terminal assignment plan Screw the terminals in securely with 0 4 0 6 Nm e Put the shields and earthing connections onto the shield bus e Use appropriate closures to seal cable glands that are not in use e Tighten the cable glands with 3 0 Nm e Put the lid onto the SILAS control unit and tighten the 4 fastening screws with 1 4 Nm Page 30 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Connections 4 2 3 Electrical Connections to the SILAS Control Unit Attention Avoid damage to the sealings Cancellation of
23. UO the Purging Function chapter NND Purge time 2 The purge time is s Minimum pressure in enclosure higher than 3 mbar atmospheric pressure switching off level EN pressure in enclosure higher than mbar EN pressure purging pressure Maximum pressure in enclosure higher than atmospheric pressure switching off mbar a T Funcior of the K3 relay MEE Dela General time delay of relays K1 to K3 for S y fluctuations in compressed air BEEN Description Passed Test at 1 5 times the maximum pressure Pressure test for 2 minutes no permanent deformation Test of alarm disconnection minimum pressure SILAS emits alarm or switches Ex pz pD operating equipment off Test of bypass operation SILAS does not Bypass emit an alarm or does not switch the Ex pz pD operating equipment off Comments BEEN KENN em Technical data subject to change without notice SILAS Control Unit Declaration of Conformity Type A7 3741 1110 and Approval 13 Declaration of Conformity and Approvals 13 1 Declaration of Conformity Erkl rung der Konformit t BAR EC Declaration of Conformity BARTEC GmbH A m Attestation de conformit Max Eyth Stra e 16 97980 Bad Mergentheim Q Wir We Nous BARTEC GmbH erkl ren in alleiniger Ver declare under our sole attestons sous notre seule antwortung dass das responsibility that the responsabilit que le pro Produkt product duit Control system
24. anguages Handling the Product Use in Accordance with the Intended Purpose Exclusive Purpose Improper Use Operator s Obligations Safety Instructions General Safety Instructions Safety Instructions for Operation Standards Conformed To Ex Protection Type and Certification Warranty Product Description Pressurised Enclosure Type of Protection SILAS Controller Schematic Diagram of the SILAS Controller in Zone 2 Schematic Diagram of the SILAS Controller in Zone 22 SILAS Control Unit Pressure Monitor Digital Purge Gas Valve Pressure Reducer with Pressure Gauge Purge Gas Nozzle Purge Gas Nozzle Zone 22 Mounting Kit for Internal Installation Installation Mounting Positions SILAS Controller External Mounting Control Configuration Installation of the Control Unit SILAS Controller Internal Mounting Control Configuration Mounting the Control Unit Mounting Atmosphere Measuring Point Mounting Pressure Monitor Purge Gas Supply Installation of the G1 4 Purge Gas Supply Mounting of the G1 2 Purge Gas Supply Table of Contents Oo CC CO N NNN NNO O a ER O Se u Ss xe ts a co X C ve gt et E OO Oo OT OO RA O DD DDyvyvyDvy N gt oa P om OO cc co co 0 DD DO N O C1 Installation of the Purge Gas Supply for Enclosures Used in Dust Explosion Endangered Areas 28 Connections Pneumatic Connections Purge gas Supply to the Pressurised Enclosure Electrical Connections Safe
25. aterial for the SILAS control unit is not included in the scope of supply Page 22 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Installation 3 3 3 Mounting Atmosphere Measuring Point Attention Protect the atmosphere measuring point from dirt Dirt on the atmosphere measuring point causes faulty measurements of operating pressure levels As a result of the faulty measurement the pressurised enclosure is deactivated and cannot be operated gt Check the atmosphere measuring point for dirt at regular intervals To enable the SILAS control unit to measure the operating pressure levels correctly an atmosphere measuring point must be set in the internal installation version All parts required for this are contained in the scope of supply for the internal installation mounting kit Procedure e Make a 9 6 mm diameter borehole at the mounting position provided for that purpose in the pressurised enclosure e Putthe screw plug 0 with the 1 mm diameter borehole and the sealing ring through the borehole e Putthe second sealing ring on the inside over the threading projecting out of the hole e Screw the sleeve onto the threading e Screw the quick plug in connector into the sleeve O The following diagram is intended to clarify the installation procedure e Techncal data subject to change without notice Page 23 0f 68 SILAS
26. ctive 2 10 Purge Gas Nozzle Zone 22 Attention Material damage caused by the absence of a purge gas nozzle The build up of internal pressure can give rise to the risk of excessive stress on the pressurised enclosure Make sure there is a purge gas nozzle there The purge gas nozzle for Zone 22 is adjustable and serves to limit the maximum pressure inside the pressurised enclosure CA It is used in a pD version of a pressurised enclosure Page 16 of 68 Technical data subject to change without notice SILAS Control Unit zn Type A7 3741 11107 eed DESSLDYEN 2 11 Mounting Kit for Internal Installation The mounting kit for internal installation is necessary if the SILAS control unit is fitted into a pressurised enclosure In this case the reference connection for atmospheric pressure is conducted outwards by means of a hose line The mounting kit consists of a Straight M5 screw in connector for a hose with an external diameter of 4 mm an R 1 8 atmospheric connection a 90 connector for a 4 mm hose sleeve with sealing washers 2 mhose4x2mm aset of mounting instructions Techncal data subject to change without notice Page 17 of 68 i SILAS Control Unit n Type A7 3741 1110 3 Installation The SILAS controller can be mounted in various installation positions on the pressurised enclosure The positioning of the SILAS controller on the pressurised enclosure is described in
27. d enclosure is set up for the explosive dust hazardous area the purge gas valve O is replaced with an adjustable purge gas nozzle Techncal data subject to change without notice Page 19 of 68 i SILAS Control Unit nn Type A7 3741 1110 3 2 2 Installation of the Control Unit To install the SILAS control unit the boreholes must be made at the desired point in the pressurised enclosure as shown in the drilling pattern in the appendix To mount the SILAS control unit onto a surface it is first necessary to remove the lower lid The SILAS control unit can be screwed on to the pressurised enclosure equipment the mounting holes provided for that purpose Item Designation SILAS control unit o M4 screw e M4 nut with M4 retaining ring Sealing inside and outside Bulkhead union Required assembly material Quantity Material 2 M4 hexagonal screw 2 M4 retaining ring 2 M4 nut The borehole pattern for affixing the SILAS control unit can be found in the appendix to these Operating Instructions The assembly material for the SILAS control unit is not included in the scope of supply Page 20 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 un 3 3 SILAS Controller Internal Mounting 3 3 1 Control Configuration Death or serious physical injury if the purge gas supply and the pressure monitor outlet are installed incorrectly This interferes w
28. de the pressurised enclosure are enabled by the SILAS control unit directly or with an additional switching device Once the SILAS control unit with its individual assembly groups have been mounted on the pressurised enclosure and the mains voltage and purge gas have been connected the pressurised system starts automatically The SILAS controller controls the flow of purge gas and the pressure inside the enclosure during the purging phase When the operating phase is initiated the components mounted in the pressurised enclosure are automatically activated by the SILAS control unit The pressure inside the pressurised enclosure is maintained automatically during the operating phase and any leakage losses are compensated Techncal data subject to change without notice Page 11 of 68 ing SILAS Control Unit Product Description Typo A7 3041 1 407 2 3 Schematic Diagram of the SILAS Controller in Zone 2 ni u Ee E M f E n M M F M f M z H ANANA en Item Designation Purge gas flow Pressurised enclosure SILAS control unit Purge gas valve with purge gas nozzle purging flow restriction Pressure reducer with pressure gauge sooo o SILAS pressure monitor module Page 12 of 68 Technical data subject to change without notice SILAS Control Unit m Type A7 3741 11107 Product Description 2 4 Schematic Diagram of the SILAS Controller in Zone 22 el
29. e pressure reducer C e g 2 bar Record and note the maximum internal pressure C e g indicated level 12 5 mbar Set the Parameters rotary switch to position 5 Use the plus or minus keys on the SILAS control unit to set the P3 setpoint to the registered level of 0 5 mbar and confirm with the SET key C e g in this example 12 0 mbar Set the Parameters rotary switch to position 2 Calculate the purge time on the basis of Chapter 6 3 Purge time Use the Plus or Minus keys on the SILAS control unit to set the purge time and confirm with the SET key C e g in this example 6 minutes Set the ON OFF rotary switch to position 0 Set the Parameters rotary switch to position 0 Set the ON OFF rotary switch to position 1 o The SILAS control unit starts and the purge time starts to count down automatically The purge time is calculated with the following formula Cabinet capacity litres x Purging factor i x Quantity factor Purge time Minutes The flow is calculated on the basis of the P3 purging pressure reached and the relevant flow diagram See appendix Quantity factor 60 if one pressure monitor module is used 30 if two pressure monitor modules are used Technical data subject to change without notice Steuerger t SILAS NEM Example of how to calculate purge time Cabinet capacity 140 Purging 10 times oet the P3 12 0 mbar switching level as desc
30. edule Statement of Conformity No TUV 09 ATEX 553359 For 0 C lt Ta lt 40 C Ptr anne Terminals 4 5 ROBY RS Terminals 1 2 3 For 0 C x Tas 60 C HERE DEEP Terminals 4 5 ROY Ka Terminals 1 2 3 For all devices REN Kari Terminals 5 6 Terminals 12 13 Un 253 V a c cos o 7 0 7 U 253 Va c cos o 0 7 Un 253 Va c cos 0 7 U 253 V a c cos o 0 7 Potential equalisation 16 Test documents are listed in the test report No 09 204 553359 17 Special conditions for safe use none 18 Essential Health and Safety Requirements no additional ones TUV NORD 5A 5A 0 5 A 0 5 A 0 5 A page 3 3 Technical data subject to change without notice SILAS Control Unit Declaration of Conformity Type A7 3741 1110 and Approval TUV NORD 1 ERGANZUNG zur Konformitatsaussage Nr T V 09 ATEX 553359 Gerat Steuerung SILAS Hersteller BARTEC GmbH Anschrift Max Eyth Stra e 16 97980 Bad Mergentheim Deutschland Auftragsnummer 8000412026 Ausstellungsdatum 13 09 2012 Anderungen Die Anderungen betreffen den Drucksensor die untere Grenze des Umgebungstemperaturbereiches und die zur Beurteilung angewandten Normen Der zulassige Umgebungstemperaturbereich andert sich wie folgt Zul ssiger Bereich der Umgebungstemperatur Temperaturklasse i 20 C bis 40 C 20 C bis 60 C Zul ssiger Bereich der Z ndsch
31. er 6 1 1 Purging Function e Define the operating pressure See Chapter 6 3 1 Define the Operating Pressure e Check the operating phase See Chapter 6 3 2 Checking the Operating Pressure 6 3 1 Define the Operating Pressure According to the standard the level for the positive pressure inside the pressurised enclosure must be higher than 0 25 mbar To ensure that the minimum pressure will be maintained the flow rate through the adjustable purge gas nozzle must be adjusted because every pressurised enclosure leaks to some degree Procedure e Setthe required input pressure on the pressure reducer C eg 2 bar e Open the purge gas nozzle with approx 2 complete turns e Close the pressurised enclosure e Connect the mains voltage and set the ON OFF rotary switch on the SILAS control unit to position 1 o The operating pressure builds up and settles at a level which is shown in the SILAS control unit display This should be kept at a constant level of approx 1 5 mbar o C8 If there is a drop in minimum pressure increase the flow at the purge gas nozzle o C If there is an increase in the minimum pressure reduce the flow at the purge gas nozzle 6 3 2 Checking the Operating Phase When commissioning the pressurised enclosure it is necessary to check the individual operating phases For this purpose all preceding work steps must be completed The operating pressure and the leakage compensation must be
32. es to restrict permission to work on the SILAS control unit to people who e arefamiliar with the basic regulations on safety and accident prevention and have been instructed in the use of the SILAS control unit e have read and understood the documentation the chapter on safety and the warnings e The owner managing operator checks that the safety regulations and accident prevention rules applicable to the respective application are being observed Techncal data subject to change without notice Page 7 of 68 SILAS Control Unit Type A7 3741 1110 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 n view of the risk of dangerous electrostatic charging wear appropriate clothing and footwear 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 operati
33. he level remains constant increases or continues to fall o If the internal pressure remains constant the leakage air needle is adjusted Reduce the flow at the leakage air needle Use a small 2 mm screwdriver to turn the screw in the leakage air needle in 74 revolutions in a clockwise direction Check the internal pressure again to determine if the level remains constant increases or continues to fall o If the internal pressure remains constant the leakage air needle is adjusted Ih Technical data subject to change without notice Steuerger t SILAS NIME 6 5 Safety During Operation Damage to the explosion protection measure If it can be assumed that safe operation is no longer possible the SILAS control unit must be put out of operation and secured against restarting 6 6 Types of Purge gas 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 pressurised enclosure Stop the supply of purge gas when opening the pressurised enclosure and make sure the escaping purge gas cannot be inhaled directly Only an inert gas e g oxygen or cleaned and dry instrument air may be used as purge gas In each 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 must be met by the purge gas Residual dust 4
34. in the national regulations must be observed for the upkeep maintenance and inspection of the operating equipment Operating and maintenance work may be done by trained specialist personnel only The statutory regulations and other binding directives on 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 table in Chapter 8 1 serves as a minimum requirement for the maintenance or commissioning of a pressurised enclosure Page 46 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3711 2 Maintenance and Care 8 1 Inspection Table for Commissioning and Maintenance Commissionin van Item Inspection point J tenance OK OK 1 Visual inspection for damage Attachment of the SILAS control unit according to 2 n a the manual 3 Diagonal purging of enclosure assured n a 4 Check that the fitted devices are fastened securely 5 Sufficient purging of installed devices n a 6 Note devices with integrated capacitors it may be T necessary to affix a sign 7 Note devices with hot surfaces if necessary affix a sign 8 Set up equipotential bonding for the pressurised enclosure 9 Check the wiring n a Check wiring in accordance with the relevant 10 er n a directives Any inspection glasses there are made of safety glass at
35. ions 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 The DANGER sign draws attention to a DANGER which will lead to death or serious injury if not avoided WARNING draws attention to a danger which can lead to death or serious injury if it is not avoided CAUTION draws attention to a danger which can lead to an injury if it is not avoided ATTENTION ATTENTION draws attention to measures which should be taken to prevent damage to property Note G Important instructions and information on effective economical and environmentally compatible handling Page 6 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 1 1 1 1 2 1 3 1 3 1 1 4 Languages The original operating instructions were written in German All other available languages are translations of the original operating i
36. ith the purging action in the pressurised enclosure Gas bubbles can form inside the pressurised enclosure and lead to an explosion when the installed parts are activated The purge gas valve and the pressure monitor must not be mounted exactly opposite each other f mounted opposite each other use angled pieces or other mechanical aids to direct the flow of purge gas to allow smooth purging Q x 2 4 6 Item Designation Function Pressurised enclosure SILAS control unit Control Pressure monitor module Purge gas valve Purge gas feed e Pressure reducer Adjustment of purge gas pressure Q Atmosphere measuring point Reference pressure When a pressurised enclosure is set up for the explosive dust hazardous area the purge gas valve O is replaced with an adjustable purge gas nozzle Techncal data subject to change without notice Page 21 of 68 i SILAS Control Unit n Type A7 3741 1110 392 Mounting the Control Unit The SILAS control unit is screwed to the mounting plate using the mounting fixtures integrated in the enclosure For this purpose the SILAS control unit is affixed to the mounting plate using four M4 screws Mounting fixtures Required assembly material when mounting using threaded holes Quantity Material 4 M4 x 25 hexagonal screws The borehole pattern for affixing the SILAS control unit can be found in the appendix to these Operating Instructions The assembly m
37. least 2 panes or of plastic Avoid 11 RM E n a electrostatic charging wipe with a damp cloth sign affixed General state of the mounted elements in the 12 pressurised enclosure device feet rain shelter cable glands Agreement of the connection voltage for the 13 AN n a individual devices with mains voltage Total power consumption of the devices lower than 14 ie RR n a the control unit s maximum switching capacity 15 Separation of any data lines checked n a 16 Maximum surface temperature checked n a Pressure test with 1 5 x Pmax passed no 17 ARR n a permanent deformations in the enclosure 18 Enclosure capacity determined n a 19 Purging phase checked 20 SILAS controller s switching levels checked 21 Correct functioning of the SILAS controller tested 22 Correct functioning of any bypass operation tested 23 Sign conforming to EN 60079 2 affixed to enclosure Techncal data subject to change without notice Page 47 of 68 Malfunctioning and SILAS Control Unit Troubleshooting Type A7 3741 1110 Malfunctioning and Troubleshooting It is assumed here that all external electrical and mechanical units have been connected correctly 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 No mains voltage Check mains voltage Nothing on display supply line Device defective Return to manufac
38. level is exceeded Switches on if the level drops below the P2 pressure switching level Switches on if the P3 pressure switching level is exceeded Switches on if the P4 pressure switching level is exceeded Switches on when the purge time counts down Switches on when the bypass is activated Switches on if internal malfunctioning is detected Technical data subject to change without notice Steuerger t SILAS uM 6 2 Commissioning of the SILAS Controller for Zone 2 Procedure for Commissioning e Before commissioning check the electrical devices installed inside the pressurised enclosure e Make sure the pressurised enclosure is purged sufficiently e The relevant safety regulations and rules must be observed e Select and set the purging variant See Chapter 6 1 1 e Define the operating pressure See Chapter 6 2 1 e Determine the purging pressure See Chapter 6 2 2 e Calculate and set the purge time See chapter 6 2 3 e Check the purging phase See Chapter 6 2 4 e Check the operating phase See Chapter 6 2 5 6 2 1 Defining the Operating Pressure According to the standard the level for the positive pressure inside the pressurised enclosure must be higher than 0 25 mbar To ensure that the minimum pressure will be maintained it is necessary to adjust the valve s rate of air leakage because there is some leakage from every pressurised enclosure Procedure e Set the required input pressure
39. mm Ambient temperature storage 20 C to 80 C Ambient temperature operation 10 C to 40 C Protection class IP 65 with mounted socket See product data sheet for more technical data 10 5 Requirements for Purge Gas The quality of the purge gas must conform to class 543 under DIN ISO 8573 1 Parameters Specifications Residual dust 40 um Residual water Dew point 3 C Residual oil content 1 mg m Temperature Maximum 40 C Techncal data subject to change without notice Page 51 of 68 i SILAS Control Unit Type A7 3741 1110 10 6 SILAS Control Purge Gas Diagram The following flow rate diagram relates to the SILAS control TTT EEE SAUNAT HAAAT TLE LN EN HANN LOT c 9 RN gE L I I1 4 j 0 ai Kequw gd Page 52 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Order Numbers 11 Order Numbers SILAS control unit AC 230 V ATEX and TUV marking SILAS control unit AC 115 V ATEX and TUV marking SILAS control unit DC 24 V ATEX and TUV marking SILAS control unit AC 230 V INMETRO marking SILAS control unit AC 115 V INMETRO marking SILAS control unit DC 24 V INMETRO marking Pressure monitor module in the Ex p enclosure 18 mm orifice Accessories and Spare Parts Digital valve with leakage air needle valve G3 8 Purge gas nozzle d 2 8 mm and 3 9 AC 230 V NC Digital valve with leakage air needle valve
40. n 2 Purge time PT Adjustment of purge time 3 P1 P1 Minimum positive pressure MIN disconnection level 4 p p Pre alarm purge gas valve opens briefly when pressure drops below the P2 level 5 P3 P3 Purging pressure if P3 pressure level is exceeded the time starts to run down 6 P4 P4 Maximum pressure MAX disconnection level 7 Relay i Defines the function of the K3 relay See function Chapter 5 4 K3 Relay General switching delay for purge time ld Hs bypassing and MIN disconnection 9 Bypass NORMAL Activation of bypass see Chapter 7 6 Technical data subject to change without notice Steuerger t SILAS 5 4 and SET Buttons The O and SET buttons serve to change and save the switching levels selected by the Parameters rotary switch 6 amp tu Pressing the or ten by an key once alters the level by 0 1 mbar The saved level is marked 5 5 Changing of Levels The levels set in the SILAS control unit can be changed by means of the three buttons and the Parameters rotary switch in the front plate Procedure to change parameters e Turn the Parameters switch 8 to the position for the parameters to be adjusted e Use the OQ or to adjust the respective parameters e Save each set level with the SET key e Turn the Parameters switch to the 0 position when you have set all
41. n examination and tests of the specified equipment in accordance to the Directive 94 9 EC Further requirements of the Directive apply to the manufacturing process and supply of this equipment These are not covered by this certificate 12 The marking of the equipment or protective system must include the following Il 3 G Ex nA nC pz IIC T4 resp Il3 G Ex nA nC pz lIC T6 and x 113 D Ex tD pD A22 IP54 T85 C T V NORD CERT GmbH Langemarckstra e 20 45141 Essen accredited by the central office of the countries for safety en ineering ZLS Ident Nr 0044 legal successor of the T V NORD CERT GmbH amp Co KG Ident Nr 0032 The h of the c rtification body A Schwedt Hanover office Am T V 1 30519 Hanover Fon 49 0 511 986 1455 Fax 49 0 511 986 1590 This statement of conformity may only be reproduced without any change schedule included Excerpts or changes shall be allowed by the TUV NORD CERT GmbH vu m uo u3 Duuu Oa P17 F 012 06 06 page 1 3 LEMI Au Page 58 of 68 Technical data subject to change without notice SILAS Control Unit Declaration of Conformity Type A7 3741 1110 and Approval TUV NORD 13 SCHEDULE 14 Statement of Conformity No T V 09 ATEX 553359 15 Description of equipment The control system SILAS is used as a control and safety device for electrical equipment designed by the method of Pressurisation with leakage compensation The control system consists
42. n are affixed to the device ATEX amp l 3G Ex nA nC pz IIC T4 T6 Gc Ex nA nC pz IIC T4 T6 Gc II 3D Ex tc p IIIB T85 C Dc Ex tc p IIIB T85 C Dc TUV 09 ATEX 553359 IECEx TUN 10 0030X No modifications or conversions may be made unless the manufacturer gives his approval in writing Explosion protection will no longer be ensured if non specified components are used It cannot be guaranteed that parts procured from other suppliers will have been designed and produced in conformance with safety requirements and with the necessary stress tolerance Before making any modifications or implementing any conversions contact the manufacturer and obtain approval Use only original spare parts and original expendable parts Note 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 ofthe SILAS control unit for a purpose other than that for which it is intended jncorrect installation commissioning operation and maintenance of the SILAS control unit non compliance with the instructions in the manual with respect to transport storage a
43. ng 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 8 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 Page 8 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 1 6 Standards Conformed To The SILAS 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
44. nstructions 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 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 SILAS control unit must be mounted properly and securely onto the pressurised enclosure if it is to work perfectly and correctly Use in Accordance with the Intended Purpose Exclusive Purpose The SILAY controller serves exclusively as a controlling and monitoring device for pressurised enclosures and is intended for use in Explosion Group Il Category 3G D and Temperature Class T4 or T6 The permissible operating data for the device being used must be observed 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 Operator s Obligations The operator undertak
45. nt temperature and the standards used for assessment were changed Annexe Attachment to CoC IECEx TUN 10 0030 issue 1 pdf Page 66 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Techncal data subject to change without notice Page 67 of 68 SILAS Control Unit Type A7 3741 1110 Page 68 of 68 Technical data subject to change without notice BARTEC BARTEC protects people and the environment by the safety of components s y srt e mos and plants BARTEC GmbH Max Eyth StraBe 16 Phone 449 7931 597 0 infoGbartec de Germany 97980 Bad Mergentheim Fax 49 7931 597 119 www bartec group com A1 3741 7D0001 03 2014 BARTEC WerbeAgentur 294266
46. nt the penetration of combustible substances The K2 relay in the SILAS control unit sends a signal that the pressurised enclosure is enabled and ready If the pressure in the enclosure drops below the set minimum levels during the operating phase all electrical fitted components in the pressurised enclosure which are not themselves explosion proof are switched off and the purging process starts again Operating phase sequence The purge valve closes and the leakage losses are compensated by means of the integrated leakage air valve The K2 LED lights up The K2 relay connects and activates the mains voltage and enables readiness The K3 relay switches depending on the configuration The remaining purge time display goes out and the existing pressure inside the enclosure is shown on the display Techncal data subject to change without notice Page 43 of 68 SILAS Control Unit Type A7 3741 1110 T 5 7 9 1 1 5 2 7 5 3 Operating Phases of the SILAS Controller for Zone 22 The operation of a pressurised enclosure constructed for explosive dust atmospheres can be divided into two phases the preparatory and operating phases Flow Diagram Operating phase Requirements Effect Mains voltage connected Initiation of the Preparatory phase operating Internal pressure greater than P1 phase Pressurised Operating phase Internal pressure greater than P1 enclosure enabled Prepara
47. o change without notice Page 15 of 68 ing SILAS Control Unit Product Description Typo A7 3041 1 407 2 8 Pressure Reducer with Pressure Gauge Attention Material damage when the maximum permissible internal pressure is exceeded in the pressurised enclosure If the supply pressure is set at too high a level there is a risk of destroying the pressurised enclosure gt Mark the supply pressure on the pressure gauge gt The supply pressure setting on the pressure gauge must be checked regularly gt Lock the pressure reducer The upstream pressure reducer is a diaphragm pressure regulator with secondary venting for lowering the pressure of externally supplied purging air The levels for the pressure reducer are set by means of a hand wheel and the adjusted reduced pressure can be read on the pressure gauge Pressure reducers are available in sizes G1 4 and G1 2 for supply to the pressurised enclosure The relevant technical data can be found in the data sheet To select the pressure reducer see Chapter 3 5 Purge gGas Supply 2 9 Purge Gas Nozzle Attention Material damage caused by the absence of a purge gas nozzle The build up of internal pressure can give rise to the risk of excessive stress on the pressurised enclosure Make sure there is a purge gas nozzle there The purge gas nozzle serves to mechanically restrict the maximum flow It restricts the maximum flow if the purge gas valve is defe
48. plications deposits of dust can build up in the pressure monitor gt f alot of dust accumulates clean the pressure monitor twice a year The pressure monitor has two functions inside the SILAS control Firstly it serves as a 7 pressure control valve which opens if the internal pressure is too high and reduces the TE N excessive pressure Secondly an orifice is integrated in the pressure monitor which determines the flow during the purge time The pressure monitor must be mounted separately from the SILAS control unit in the pressurised enclosure 2 7 Digital Purge Gas Valve The digital purge gas valve is permitted only for operation with a SILAS control unit which has a suitable valve fuse If the digital purge gas valve is operated with a control module which has inadequate fusing there is a risk that the valve fuse will be destroyed gt Check that the purge gas valve is compatible with the SILAS control unit The digital purge gas valve controls the supply of purge gas It is an upstream solenoid valve and its function is to introduce purge gas into a pressurised enclosure for Zone 2 Here the digital purge gas valve is controlled by the SILAS control unit to allow the purge gas valve to open to purge the pressurised enclosure and close again when the purging is finished An integrated adjustable leakage air needle compensates for the loss through leakage in the pressurised enclosure Techncal data subject t
49. rehole 21 mm Procedure e Make a 21 mm diameter borehole at the mounting position provided for that purpose in the pressurised enclosure e Mount the G1 2 pressure reducer onto the pressurised enclosure using the reducing sleeve and the sealing washers 8 e Screw the detachable double threaded nipple into the reducing sleeve O e Screw the purge gas valve onto the detachable double threaded nipple e Screw in the purge gas nozzle 9 at the purge gas valve outlet 6 Item Material Purge gas nozzle Purge gas valve Detachable G3 8 bulkhead nipple G3 8 i G1 2 a reducing sleeve Sealing washer Pressurised enclosure 9 000 0 G1 2 pressure reducer Techncal data subject to change without notice Page 27 of 68 Installation 3 5 3 Installation of the Purge Gas Supply for Enclosures Used in Dust Explosion Endangered Areas Page 28 of 68 SILAS Control Unit Type A7 3741 1110 The purge gas supply must be installed carefully To ensure that the screwed parts are leak tight they can be sealed with Teflon tape Care must be taken to prevent the penetration of foreign particles during assembly Procedure Item 09 9000 Q0 Make a 17 mm diameter borehole at the mounting position provided for that purpose in the pressurised enclosure O Mount the reducing sleeve with sealing washers and using the G3 8 nut 8 in the pressurised enclosure Sc
50. rew in the adjustable purge gas nozzle 9 into the reducing sleeve inside the pressurised enclosure screw the detachable double threaded nipple into the reducing sleeve screw the G1 4 pressure reducer onto the detachable double threaded nipple Material Adjustable purge gas nozzle G3 8 nut G3 8 sealing washer Pressurised enclosure G3 8 sealing washer G1 4 i G3 8 a reducing sleeve Detachable G1 4 double threaded nipple on both sides G1 4 pressure reducer Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Connections 4 Connections 4 1 Pneumatic Connections When the SILAS controller is used an atmosphere measuring lead need be fitted only in the internal installation version This serves to correctly measure the positive pressure inside the pressurised enclosure You will find installation details in the Mounting the Atmosphere Measuring Point chapter or in the assembly instructions included with the mounting kit These measuring lines are connected as standard in the SILAS control unit for external mounting and they therefore do not need to be produced by the user 4 1 1 Purge gas Supply to the Pressurised Enclosure Insufficient purge gas because the purge gas supply lines are too small The insufficient flow prevents the pressurised enclosure from starting operation gt Adapt the internal diameter of the purge ga
51. ribed in Chapter 6 2 2 Determination of the purging pressure Flow in accordance with diagram 14 000 I h Quantity factor with 1 pressure monitor 60 with 2 pressure monitors 30 The purge time is calculated as follows With a pressure monitor of the type 17 51P3 1604 140 x 10 14 000 x 60 6 minutes with two pressure monitors of the type 17 51P3 1604 140 x 10 14 000 x 30 3 minutes 6 2 4 Checking the Purging Phase Safe operation with fluctuations in pressure For safe operation pressure fluctuations raise the pressure reducer s setpoint inlet pressure by 0 5 bar When commissioning the pressurised enclosure it is necessary to check the individual operating phases For this purpose all preceding work steps must be completed The operating pressure leakage compensation and purge time must be set Procedure e Setup the pressurised enclosure to be ready for operation e Activate the SILAS control unit e Activate the purge gas supply o The K1 LED lights up o The purge time shown on the sensor module s display counts down e Reduce the purge gas supply by lowering the pressure at the pressure reducer o The purge time in the display on the SILAS control unit is stopped e Reset the purge gas supply by increasing the pressure on the pressure reducer to the initial level o The purge time shown in the sensor module s display counts down o Atthe end of the purge time the K2 LED lights up and the K
52. s supply line to the required flow A minimum level of pressure depending on the capacity of the pressurised enclosure is required to purge the internal volume The required flow of ca 40 m hour can be reached in pressurised enclosures with a capacity of 1m This quantity of purging air must be available during the purging phase and the purge gas supply must be able to convey this flow The purge gas supply is connected to the pressure reducer on the pressurised enclosure Depending on the capacity the right size of pressure reducer must be mounted onto the pressurised enclosure The following table is provided to assist the selection of the right purge gas supply Capacity of pressurised enclosure eur Me hue gon 50 litres 2 bar 1 4 8mm 50 to 300 litres 2 bar 1 4 8 mm 300 to 700 litres 2 bar 1 2 12 mm 700 to 1 000 litres 3 bar 1 2 16 mm as of 1 000 litres 3 bar 1 25 mm Techncal data subject to change without notice Page 29 of 68 SILAS Control Unit Type A7 3741 1110 4 2 Electrical Connections 4 2 1 Safety Instructions for the Electrical System Death or serious physical injury due to work on live parts Risk of fatal injury from electric current Observe the 5 safety rules for work on electrical systems disconnect from mains protect against unintended reconnection verify the absence of voltage earth and short circuit cover or safeguard nearby live parts 4 2 2 Directions for Wiring the SILA
53. slation 0 Statement of Conformity TUV NORD 2 Equipment and protective systems intended for use in potentially explosive atmospheres Directive 94 9 EC 3 Statement of Conformity Number T V 09 ATEX 553359 4 forthe equipment Control system SILAS 5 ofthe manufacturer BARTEC GmbH 6 Address Max Eyth Stra e 16 97980 Bad Mergentheim Germany Order number 8000553359 Date of issue 2009 07 14 7 This equipment or protective system and any acceptable variation thereto are specified in the schedule to this statement of conformity and the documents therein referred to 8 The T V NORD CERT GmbH certifies that this equipment or protective system has been found to comply with the Essential Health and Safety Requirements relating to the design and construction of equipment and protective systems intended for use in potentially explosive atmospheres given in Annex II to the Directive The examination and test results are recorded in the confidential report No 09 204 553359 9 Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 60079 0 2006 EN 60079 2 2007 EN 60079 15 2005 EN 61241 0 2006 EN 61241 1 2004 EN 61241 4 2006 10 If the sign X is placed after the certificate number it indicates that the equipment or protective system is subject to special conditions for safe use specified in the schedule to this certificate 11 This statement of conformity relates only to the desig
54. ssembly commissioning operation and maintenance structural modifications to the SILAS 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 SILAS 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 Technical data subject to change without notice SILAS Control Unit zn Type A7 3741 11107 edie UCSCIpUOn 2 Product Description 2 1 Pressurised Enclosure Type of Protection The Ex p type of protection referred to as pressurised enclosure is based on the measure of purging out any explosive gases that are in a closed enclosure and then generating and maintaining a level of pressure that is higher than that of the ambient atmosphere As the pressure inside the enclosure is higher than the atmospheric pressure it is not possible at any time for explosive gases to penetrate the
55. ta subject to change without notice Page 63 of 68 DHE A una SILAS Control Unit and Approval Type A7 3741 1110 IECEx Certificate of Conformity IEC GE Certificate No IECEx TUN 10 0030X Date of Issue 2012 09 14 Issue No 1 Page 2 of 4 Manufacturer BARTEC GmbH Max Eyth Stra e 16 97980 Bad Mergentheim Germany Manufacturing location s This certificate is issued as verification that a sample s representative of production was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer s quality system relating to the Ex products covered by this certificate was assessed and found to comply with the IECEx Quality system requirements This certificate is granted subject to the conditions as set out in IECEx Scheme Rules IECEx 02 and Operational Documents as amended STANDARDS The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents was found to comply with the following standards IEC 60079 0 2011 Explosive atmospheres Part 0 General requirements Edition 6 0 IEC 60079 15 2010 Explosive atmospheres Part 15 Equipment protection by type of protection n Edition 4 IEC 60079 2 2007 02 Explosive Atmospheres Part 2 Equipment protection by pressurized enclosure p Edition 5 IEC 60079 31 2008 Explosive atmospheres Part 31 Equipment dust ignition protection by enclosure
56. the Ex protection strategy gt When closing the SILAS control unit visually check the sealing intactness cleanliness and secure fitting Display ums BARTEG E ON OFF N F Parameter N le a Terminal Connection Function 1 3 K3 relay alarm Freely programmable relay 4 5 K2 relay ready signal Release relay 6 Purge gas valve Actuation of the purge gas valve 1 8 L Voltage supply 9 11 L Voltage supply 12 13 PE Earthing Bypass Bypass Activation of the bypass Techncal data subject to change without notice Page 31 of 68 SILAS Control Unit Type A7 3741 1110 5 Operation 5 1 Setting of Parameters The parameters are set via the SILAS operating menu For this purpose there are three buttons and one rotary switch on the SILAS control unit SILAS amp 5 Parameter eoe Ki K2 K3 Bypass e The following sections explain the individual functions of the rotary switch and the buttons 5 2 ON OFF Rotary Switch The ON OFF rotary switch 9 activates or deactivates the SILAS control unit 5 3 Parameters Rotary Switch Page 32 of 68 The Parameters rotary switch is used to display the different parameters in the SILAS control unit display Item Parameter Display Action 0 Operating Internal pressure Display of purge time current pressure purge time level Purging i Defines the purging function function See Chapter 6 1 1 Purging Functio
57. the following chapter The SILAS control unit can be mounted in the interior or on the exterior of the pressurised enclosure The pressure monitor and the purge gas valve must be installed separately from the SILAS control unit 3 1 Mounting Positions For ideal purging the SILAS controller consisting of SILAS control unit pressure monitor and purge gas valve should be installed in one of the following positions Page 18 of 68 Technical data subject to change without notice SILAS Control Unit Type A7 3741 1110 Installation 3 2 SILAS Controller External Mounting 3 2 1 Control Configuration Death or serious physical injury if the purge gas supply and the pressure monitor outlet are installed incorrectly This interferes with the purging action in the pressurised enclosure Gas bubbles can form inside the pressurised enclosure and lead to an explosion when the installed parts are activated gt The purge gas valve and the pressure monitor must not be mounted exactly opposite each other gt f mounted opposite each other use angled pieces or other mechanical aids to direct the flow of purge gas to allow smooth purging E E T A T 5 gt iM Item Designation Pressurised enclosure o SILAS control unit e Pressure monitor Purge gas valve e Pressure reducer Function Control Functional unit positive pressure Purge gas feed Adjustment of purge gas pressure When a pressurise
58. tory Phase In the preparatory phase all internal deposits of dust must be removed before the pressurised enclosure is activated After cleaning the pressurised enclosure the door is closed the SILAS control unit is put into operation and the purge gas supply is activated When the purge gas supply is activated the purge gas is conducted into the pressurised enclosure by means of the leakage air needle and accordingly a level of pressure is reached which is higher than that in the surrounding atmosphere Preparatory phase sequence The influx of purge gas increases the pressure inside the pressurised enclosure The P1 minimum pressure in the enclosure is exceeded The next phase the operating phase is initiated Operating Phase Page 44 of 68 The operating phase begins when the purge gas flows in This builds up a level of pressure in the pressurised enclosure that is higher than atmospheric pressure The internal pressure of the pressurised enclosure is measured on the SILAS control unit and compared with the setpoint limits Once there is a positive level of pressure inside and the minimum switching level has been exceeded the readiness of the pressurised enclosure is signalled via the K2 relay on the SILAS control unit During the operating phase the penetration of dust is prevented by the maintenance of a constant level of pressure that is higher than that of the surrounding atmosphere The internal pressure is monitored b
59. turer The electrical devices Bypass connector amp rotary switch Remove the bypass are connected and S2 in position 9 connector and set S2 activated without rotary switch to position 0 purging phase Incorrect programming of the Check programming of purging function in the SILAS purging function See control unit Chapter 6 1 1 The digital purge gas Excessive quantity of purge gas is Reduce the diameter of valve switches off introduced into the pressurised the purge gas nozzle briefly during the enclosure purge time Purge time does not No purge gas Connect purge gas count down Purge gas valve does not open Check purge gas valve for supply voltage terminals 6 and 9 Check purge gas valve for foreign particles in the mechanical part Insufficient purge gas flowing Increase input pressure to through the pressurised enclosure setpoint level Increase the diameter of the purge gas nozzle Check the P3 purge gas pressure Increase the cross section in the purge gas supply line The pressure reducer s setpoint The diameter of the purge pressure is not reached gas supply line is too small Increase the cross section of the supply line Enclosure leaks during the purging Use suitable measures to phase due to an increase in seal the enclosure or internal pressure reinforce the walls of the enclosure Page 48 of 68 Technical data subject to change without notice SILAS Control Unit Malfunctioning and Type A7 3711 2
60. ty Instructions for the Electrical System Directions for Wiring the SILAS Control Unit Electrical Connections to the SILAS Control Unit Technical data subject to change without notice 29 29 29 30 30 31 SILAS Control Unit Table of Contents Type A7 3741 1110 9 5 1 5 2 5 3 5 4 5 5 6 6 1 6 1 1 6 1 2 6 2 6 2 1 6 2 2 6 2 3 6 2 4 6 2 5 6 3 6 3 1 6 3 2 6 4 6 5 6 6 7 1 7 2 1 3 14 1 9 7 9 1 7 9 2 7 9 3 7 6 8 1 9 1 10 10 1 10 2 10 3 10 4 10 5 10 6 11 11 1 11 2 11 3 Operation Setting of Parameters ON OFF Rotary Switch Parameters Rotary Switch and SET Buttons Changing of Levels Commissioning General Settings for Commissioning Purging Function K3 Relay Commissioning of the SILAS Controller for Zone 2 Defining the Operating Pressure Determination of the purging pressure Purge time Calculate Checking the Purging Phase Checking the Operating Phase Commissioning of the SILAS Controller for Zone 22 Define the Operating Pressure Checking the Operating Phase Adjusting the Leakage Air Needle Safety During Operation Types of Purge gas Operation Operating Phases of the SILAS Controller for Zone 2 Flow Diagram Preparatory Phase Purging Phase Operating Phases of the SILAS Controller for Zone 22 Flow Diagram Preparatory Phase Operating Phase Bypass Operation During the Operating Phase Maintenance and Care
61. utzgastemperatur O C bis 40 C Zul ssiger Bereich der Umgebungstemperatur 20 C bis 80 C Druckw chter Die maximal zul ssigen Grenzwerte der Umgebungstemperatur f r die Steuerung in Abh ngigkeit von der Temperaturklasse sind der obigen Tabellen zu entnehmen Alle weiteren technischen Daten gelten unver ndert f r diese Erg nzung Die Kennzeichnung ndert sich wie folgt x 3GExnA nC pz IC TA Gc bzw 113GExnAnC pz IC T6 Gc und Il 3 D Ex tc p IIIB T85 C Dc Das Ger t incl dieser Erg nzung erf llt die Anforderungen der folgenden Normen IEC 60079 0 2011 EN 60079 2 2007 EN 60079 15 2010 EN 60079 31 2010 EN 61241 4 2006 P17 F 008 06 06 Seite 1 2 Techncal data subject to change without notice Page 61 of 68 DAAE A una SILAS Control Unit and Approval Type A7 3741 1110 TUV NORD 1 Erg nzung zur Konformit tsaussage TUV 09 ATEX 553359 16 Die Pr fungsunterlagen sind im Pr fbericht Nr 12 214 107886 aufgelistet 17 Besondere Bedingungen keine 18 Grundlegende Sicherheits und Gesundheitsanforderungen keine zusatzlichen TUV NORD CERT GmbH Langemarckstra e 20 45141 Essen akkreditiert durch die Zentralstelle der Lander f r Sicherheitstechnik ZLS Ident Nr 0044 Rechtsnachfolger der TUV NORD CERT GmbH amp Co KG Ident Nr 0032 Der m i Schwedt Gesch ftsstelle Hannover Am T V 1 30519 Hannover Tel 49 0 511 986 1455 Fax 49 0 511 986 1590 Seite 2 2
62. without interrupting the operation of the internal components The required settings can be carried out and once done the pressurised enclosure must be closed again The operation of the pressurised enclosure is not interrupted during this time Procedure e Measure to ensure hazardous substances in the surrounding atmosphere are below regulatory limits e Take the top cover off the SILAS control unit e Set the Parameters rotary switch to position 9 e Insert the bypass jumper o Information shown in the display changes from NORMAL to BYPASS e Open the door on the pressurised enclosure o The enabling by the K2 relay is not reset e Do the required work inside the pressurised enclosure e Close the door on the pressurised enclosure e Remove the bypass jumper o Information shown in the display changes from BYPASS to NORMAL e Set the parameters rotary switch to position 0 e Put the top cover onto the SILAS control unit Techncal data subject to change without notice Page 45 of 68 SILAS Control Unit Maintenance and Care Type A7 3741 1110 Maintenance and Care Maintenance intervals Regular maintenance is not necessary if the device is operated appropriately in compliance with the installation instructions and ambient conditions The recommendation is gt An inspection every year in accordance with the table in Chapter 0 1 Maintenance and Care The currently applicable provisions
63. y the SILAS control unit s pressure monitor If the internal pressure drops during operation to below the P1 switching level e g when the door is opened a message to that effect can be sent in the form of an alarm Operating phase sequence The internal level of pressure is higher than atmospheric pressure The K2 LED lights up K2 relay connects mains voltage and enables readiness K3 relay switches according to configuration Technical data subject to change without notice SILAS Control Unit 7 6 Bypass Operation During the Operating Phase Risk of explosion during active bypass operation The activation of the bypass operation can cause explosive gas to penetrate the pressurised enclosure Determination of the concentration of gas in the surrounding atmosphere Approval by the plant manager or his appointee fire permit for the activation of bypass operation Limit the duration of activation of the bypass operation During the operating phase it may be necessary to change settings on internally mounted components The SILAS control unit provides the bypass function for this purpose If the bypass operation is activated it must be ensured that there are no explosive gases in the atmosphere The concentration of gas in the surrounding atmosphere must be established by means of a gas detector Once the bypass operation is activated the door of the pressurised enclosure can be opened
64. zzle is there Not enough purge gas because the purge gas supply line is too small The insufficient flow prevents the pressurised enclosure from starting operation Adapt the internal diameter of the purge gas supply line to the required flow The purge gas supply is composed of a pressure reducer a purge gas valve and a purge gas nozzle Depending on the capacity of the pressurised enclosure the purge gas supply is available in the sizes G1 4 or G1 2 The purge gas supply must be selected in accordance with the following table Capacity Pressure Pressure reducer Purge gas nozzle 50 litres 2 bar 1 4 2 8 mm 50 to 300 litres 2 bar 1 4 3 9mm 300 to 700 litres 2 bar 12 4 5 mm 700 to 1 000 litres 3 bar 1 2 4 5 mm as of 1 000 litres 3 bar 1 2 5 5 mm The levels specified in the table are reference values and can vary The pressure reducer for lowering the pressure of the supplied purge gas is mounted on the outside of the pressurised enclosure The purge gas valve which releases the purge gas is mounted inside the pressurised enclosure The purge gas nozzle restricts the maximum flow of the purge gas and accordingly prevents pressure increasing to the maximum level inside the pressurised enclosure when a purge gas valve is defective The following shows the assembly of the purge gas supply The required assembly material is included in the scope of supply Techncal data subject to change without notice Page 25 of 68

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