Operating Instructions
Contents
1. 144 0 120 0 60 0 104 0 750 82 0 30 0 Hoy O O SOB a N il J E E o o o o Salas oO N Ww OH EEEE a g 0 5 wo z E ee E n JE CI a i ILT CL_TIci LI L d d Leger 200 23 0 37 0 51 0 Control unit 8624 1 167921 862460300010 S BA 8624 1 01 en 30 07 2008 06078E00 Control unit Ex p 8624 1 Technical Data Service category AC 15 DC 13 L R 0 ms 50 ms Technical Data Version Safety specific data Gas explosion protection Certificates Rated operational voltage Rated operational current Back up fuse Ambient temperature Housing material Pressure controller Connection Outlet pressure Flow Air Supply Unit Il 2 G Ex mb II T4 T5 T6 or Il 2 G Ex e mb II T4 T5 T6 PTB 00 ATEX 2129 X 12V 24V 115 V 230 V UC 230 V AC 10 10 600 mA at 12 V 300 mA at 24 V 60 mA at 115 V 30 mA at 230 V 1 0Aat12V 0 63 A at 24 V 0 125 A at 115 V 0 08 A at 230 V 30 C 60 C Brass and epoxy resin glass fibre reinforced black antistatic 4 4 0 5 3 bar 490 l min Dimensional drawings all dimensions in mm subject to alterations ER 64 CL Air suppl2. gt The desired parameter is set 167921 862460300010 Control unit Ex p 21 8624 1 Setting parameters for the control unit 9 10 Setting the function of relay K1 J E E zIsolation System Fault Function of Function of Fault 1min relay K1 Okri relay K1 Fault flash OK XXXXXXXXX Prealarm MIN Prealarm MAX 5 Purging Lei Bypass Fault Bypass 07184E02 Fig 9 9 Setting the function of relay K1 gt Select the Function of relay K1 display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the desired function by turning the selector switch for information on the available functions see table 9 1 gt Press the Info OK key to confirm the function gt The display switches back to Function of relay K1 gt The desired function is set L Factory settings Isolation Functions of relay K1 Function Isolation The relay is normally closed and opens in case of a fault System Fault The relay is normally closed and opens in case of a system fault Fault 1 min The relay is normally closed and opens 1 minute after a fault occurred Fault flash The relay is normally closed and opens for the first time 1 minute after a fault occurred Then it alternates every second Prealarm MIN The r
3. 167921 862460300010 Control unit Ex p 17 S BA 8624 1 01 en 30 07 2008 8624 1 Setting parameters for the control unit Setting the parameters gt Remove the cover of the control unit gt Toggle between the different parameters by turning the selector switch adjustable parameters see fig 9 2 gt Switch to the editing mode by pressing the Info OK key Ce The control unit will return to the normal mode if the selector switch is not actuated for 10 seconds A MENU Cabinet Language pressure mbar OK a H 10s Purge 10s Enter S volume La purge volume ltr OK a 10s Function of 10s Switchpoint relay K1 m min pressure 10s Switchpoint 10s Switchpoint min pressure m overpressure mbar 2 OK a H i 10s Switchpoint 10s min m max pressure volume flow mbar 2 OK a H i 10s min 10s Display m volume flow m contrast Hee OK a i 10s Function of K1 K 10s Pressure regulation H 10s Function bypass E displayable adjustable parameters parameters 07177E02 Fig 9 2 Parameters 18 Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en
4. Ex p enclosure to the nominal overpressure compared to the surrounding atmosphere Factory settings are X MIN 0 8 mbar X MAX 15 0 mbar In case of increased internal pressure factory settings 4 0 mbar compared to the surrounding atmosphere a mechanical valve of the control unit opens automatically The increased pressure is reduced until reaching the set value factory settings 3 5 mbar 10 0 8 0 6 0 4 0 2 0 0 0 gt T1 T2 T3 T4 T5 07173E00 Fig 8 2 Normal operation T1 Purging is finished The preset internal pressure of the enclosure is adjusted 2 mbar The devices in the Ex p enclosure are connected T2 Normal operation starts The internal pressure is adjusted to the nominal value 2 mbar T3 The internal pressure of the enclosure increases T4 The internal pressure is reduced via the mechanical valve in the control unit T5 Normal operation starts Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 Function troubleshooting 8 3 Behaviour of the control unit in case of fault The system faults described in this chapter may only be eliminated by qualified maintenance personnel Do not carry out any work on the control unit or digital controller before being authorized so by the manufacturer Fault during purging Purging is interrupted if X Power supply fails for more than 2 seconds X The internal
5. gt Consult the relevant national regulations e g IEC EN 60079 17 to determine the type and extent of inspections gt Plan the intervals so that any defects in the equipment which may be anticipated are promptly detected To check as part of the maintenance schedule X Check that cables are clamped properly X Inspect device for visible damage X Compliance with the permitted temperatures in accordance with IEC EN 60079 0 X Make sure the device is used according to its designated use 11 2 Cleaning 24 The inspection window of the control unit must be cleaned only when it is heavily soiled X Clean with a moist cloth X Use water or mild non abrasive non scratching cleaning agents X Never use aggressive cleaning agents or solvents Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 Accessories and Spare Parts 11 3 Repair work A WARNING Danger due to improper repair gt Improper repairs may impair the explosion protection gt The control unit must be repaired only by the manufacturer Note in accordance with the ordinance on hazardous substances In accordance with the German waste management act dated 27 8 1986 AbfG 11 Special waste the owner of special waste is responsible for the disposal At the same time the employer is obliged to protect his employees according to the German ordinance on hazardous substances dated 1 10 1986 GefStoffV 17 General P
6. digital controller 07171E00 Fig 7 5 Compressed air supply connection gt Connect the pressure controller to the compressed air supply connection G 1 4 gt Make sure that the volume flow required for operation is available see table 7 1 Supply pressure Minimum volume flow bar Nozzle 2 0mm Nozzle 2 5mm _ Nozzle 3 0mm Nozzle 3 8 mm 1 2 8 mb 4 6 m h 7 0 mb 9 0 m h 1 5 3 9 m h 6 25 m h 9 0 mb 15 0 m h 2 4 7 m h 7 5 m h 11 0 m h 18 0 mb 2 5 5 7 m h 9 5 m h 13 5 m h 22 0 m h 3 0 6 6 m h 10 0 m h 15 0 m h 24 0 mi Table 7 1 Minimum volume flow Mains connection ae Se SS Se ee SS Se programmable Ex p release potential free relay contact K1 CC WW l I I I i i 1 I l v v v i i i i i i 07187E02 Fig 7 6 Circuit diagram standard version gt Carry out the connection of the control unit to mains supply and the connection between control unit and solenoid valve in accordance with the circuit diagram see Fig 7 6 10 Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 Function troubleshooting See ie Ras et Di N al ae at E E RA i t i t i K1 i l gt i i i1 j2 l3 4 i je 7 is 9 10 l T d v i ie Ex
7. national safety and accident prevention regulations gt Only run the device according to its performance data gt Servicing maintenance work or repairs which are not described in the operating instructions must not be performed without prior agreement with the manufacturer gt Any damage may render explosion protection null and void gt No changes to the device impairing its explosion protection are permitted gt Install and use the device only if it is undamaged dry and clean If you have questions gt Contact the manufacturer Warnings Warnings are sub divided in these operating instructions according to the following scheme Z WARNING Type and source of the danger gt Possible consequences gt Measures for avoiding the danger They are always identified by the signalling word WARNING and sometimes also have a symbol which is specific to the danger involved 167921 862460300010 Control unit Ex p 3 S BA 8624 1 01 en 30 07 2008 8624 1 Designated Use 3 3 Conformity to Standards The device complies with the following standards and regulations X Directive 94 9 EC X EN 60079 0 EN 60079 2 EN 60079 7 EN 60079 11 EN 60079 18 4 Designated Use The control unit 8624 1 is an explosion protected device to monitor and control overpressure in Ex p enclosures In combination with an appropriate enclosure with ingress protection gt IP54 IP65 recommended and the air supply unit
8. no authorization for non explosion protected devices in the enclosure Electrical wiring defective Control electrical connections Device switches off permanently during running operation Device switches off sporadically then purging restart Internal pressure reaching limit value Readjust the leakage nozzle The suction pressure of the system fails temporarily e g when switching on a large consumer Increase the suction pressure on the pressure controller to max 3 5 bar Automatic disconnection of the non explosion protected devices in the enclosure The display of the internal pressure is not deactivated 4 seconds after pressure loss e g by opening the enclosure door Power supply fails more than 2 seconds Automatic restart MIN pressure not reached Enclosure not tight Seal the enclosure and the installed equipment readjust the leakage nozzle if necessary MIN pressure not reached Cross section of the compressed air inert gas supply is too small MAX pressure exceeded Air outlet mechanical valve of the control unit is closed or clogged Swichpoint min pressure set incorrectly Replace the tubes by tubes with larger cross section Open or clean the air outlet of the control unit Set a new limit value Key operated bypass switch is active Turn the key operated switch to the Off position Table 8 2 Fault during operation Control unit Ex
9. p release 2 11 l i i e i Lt G a i valve l i As i l eeh Lg i external signal light L1 L N l PE es e Fig 7 7 Circuit diagram connection of an external signal lamp If necessary connect a signal station to the potential free contact K1 see fig 7 7 Close the enclosure cover of the control unit carefully gt Carefully screw down all the cable entries gt Ensure that unused cable entries are sealed with plugs certified to Directive 94 9 EC 8 Function troubleshooting 8 1 General functional description A 10 0 8 0 6 0 4 0 2 0 0 0 gt T1 T2 T3 07172E00 Fig 8 1 General function T1 After connecting the power and compressed air supply the control unit starts a self test T2 Purging is finished The preset internal pressure of the enclosure is adjusted 2 mbar The devices in the Ex p enclosure are connected T3 Normal operation starts The internal pressure of the enclosure is regulated to the nominal value 2 mbar It is monitored in order not to fall below the MIN value factory settings 0 8 mbar or exceed the MAX value factory settings 15 0 mbar 167921 862460300010 Control unit Ex p 11 S BA 8624 1 01 en 30 07 2008 8624 1 Function troubleshooting 8 2 Behaviour of the control unit in normal operation 12 In normal operation the control unit controls and regulates the internal pressure of the
10. the control unit offers a pressurised protection In combination with the air supply unit the control unit 8624 1 is approved for use in hazardous areas zones 1 and 2 category 2 The control unit controls the overpressure in the Ex p enclosure and monitors the states via the output contacts Pressurised enclosure Two uses can be distinguished for pressurised enclosures X Operation with compensation of leakage losses X Operation with permanent purging L in both operating modes the enclosure should be minimum ingress protection IP54 IP65 recommended Operation with compensation of leakage losses In this operating mode the potentially explosive gas mixture of the surrounding atmosphere is first removed from the enclosure by purging Then an amount of compressed air or inert gas high enough to compensate leakages in the enclosure and to maintain a minimum overpressure with regard to the surrounding atmosphere is supplied L During the purging a differential pressure of gt 4 mbar is built up During operation a differential pressure of gt 2 mbar is sustained Operation with permanent purging In this operating mode the enclosure is permanently flushed with compressed air or inert gas for evacuating e g generated heat from the enclosure The air outlet of the control unit may be located in a potentially explosive atmosphere it is certified correspondingly Z WARNING Only
11. the leakage air volume Close the adjusting screw on the solenoid valve in clockwise direction as far as possible gt Turn the adjusting screw in anti clockwise direction until the desired leakage air volume is reached see leakage air diagram Fig 7 2 8 Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 Assembly 7 3 Assembly of the components pmax 5mm 1 3 4 5 6 CH C CH I i KI DI S S p AN et Gi 11 1009 8 7 06358E00 Fig 7 4 Assembly of the components gt Put the O ring 33 7 x 2 2 mm 3 between enclosure wall and control unit 4 and fix it with the fixing screws 5 gt Screw the intake screw connection 1 together with the O ring 33 7 x 3 5 mm 2 into the control unit gt Mount the solenoid valve 11 and the sealing disks 9 10 with the connecting piece 8 gt Mount the pressure controller 7 on the connecting piece gt Connect the pressure controller to the compressed air supply or the inert gas supply 167921 862460300010 Control unit Ex p 8624 1 S BA 8624 1 01 en 30 07 2008 Assembly 7 4 Connection of the components Compressed air supply L The throughput of a preceding pressure controller or filter must be minimum that of the
12. 081 1 1993 2004 108 EC EMC Directive EN 50081 2 1993 2004 108 CE Directive CEM EN 50082 1 1996 EN 50082 2 1996 Qualit tssicherung Produktion Production Quality Assessment PTB 96 ATEX Q006 4 Assurance Qualit e Production Kenn Nr der benannten Stelle Notified Body number N de l organisme de certification 0102 Waldenburg 12 03 2008 iV iM er Ort und Datum _ B Limbacher Dr S Jung Place and date Leiter Entwicklung Leiter Qualit tsmanagement lieu et date Head of Development Director Quality Management Dept Directeur D veloppement Directeur Dept Assurance de Qualit 167921 862460300010 Control unit Ex p S BA 8624 1 01 en 30 07 2008 8624 1 27 167921 862460300010 S BA 8624 1 01 en 30 07 2008
13. 1 862460300010 S BA 8624 1 01 en 30 07 2008 26 Control unit Ex p 8624 1 Declaration of Conformity 14 Declaration of Conformity TXV 03 99 Papier chlorfrei prescription de la directive Num ro ainsi que date d mission des normes 94 9 EG ATEX Richtilinie EN 60079 0 2006 EG Konformitatserklarung EC Declaration of Conformity CE D claration de Conformit Wir we nous R STAHL Schaltgerate GmbH Am Bahnhof 30 74638 Waldenburg Germany 8624 1 erklaren in alleiniger Verantwortung dass das Produkt Steuergerat hereby declare in our sole responsibility that the product Control unit d clarons de notre seule responsabilit que le produit Unit de commande mit der EG Baumusterpriifbescheinigung T under EC Type Examination Certificate TUV 07 ATEX 554304 avec Attestation d examen CE de type auf das sich diese Erkl rung bezieht mit den folgenden Normen oder normativen Dokumenten bereinstimmt which is the subject of this declaration is in conformity with the following standards or normative documents auquel cette d claration se rapporte est conforme aux normes ou aux documents normatifs suivants Bestimmungen der Richtlinie Nummer sowie Ausgabedatum der Norm terms of the directive Number and date of issue of the standard 94 9 EC ATEX Directive EN 60079 2 2004 94 9 CE Directive ATEX EN 60079 7 2003 EN 60079 11 2007 EN 60079 18 2004 2004 108 EG EMV Richtlinie EN 50
14. 30 07 2008 9 3 9 4 9 5 Setting parameters for the control unit Resetting the factory settings gt Switch off the power supply of the control unit gt Set the selector switch to the 1 o clock position arrow pointing upwards then one step in clockwise direction gt Switch on the power supply of the control unit with pressed Info OK key gt Release the Info OK key when Load factory settings appears on the display gt The control unit has been reset to factory settings Setting the language Language Language E ox English oK 2 XXXXXXXXX German oi Fig 9 3 Setting the language gt Select the Language display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the desired language by turning the selector switch gt Press the Info OK key to confirm the selection gt The display switches back to Language gt The desired parameter is set L Factory settings English Adjusting the purge volume a OK L Enter Enter 50l step confirm purge volume OK purge volume OK purge volume OK XXXXX ltr Ka XXXXX ltr a 5l step Fig 9 4 A
15. 4 1 01 en 30 07 2008 a min min 0 5 I sec step Confirm volume flow OK volume flow Hor volume flow OK XXXXX l sec E xxxxx l sec a 0 1 I sec step 07182E02 Fig 9 7 Setting the minimum volume flow gt Select the min volume flow display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the desired value by turning the selector switch gt Press the Info OK key to confirm the value gt A request for confirming the value again is prompted gt Press the Info OK key to confirm the value again gt The display switches back to min volume flow gt gt The desired parameter is set L Possible adjustment range 0 3 I s 3 6 I s Factory settings 0 3 I s Setting the display contrast Display Display contrast Ok contrast a OK HHH __ w 07183E02 Fig 9 8 Setting the display contrast Select the Display contrast display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the desired value by turning the selector switch gt Press the Info OK key to confirm the value gt The display switches back to Display contrast
16. BA 8624 1 01 en 30 07 2008 Control unit Ex p 8624 1 15 Function troubleshooting 16 Fault Consequence Possible cause Elimination Normal operation does not start after successful purging The internal pressure is displayed for approx 4 seconds Then the display is switched off MIN pressure not reached Internal pressure of the enclosures is not sufficient after purging Pressure decreases Seal the enclosure and the installed equipment readjust the leakage nozzle if necessary The internal pressure is displayed during a short time longer than 4 seconds Then the display is switched off MIN pressure not reached Internal pressure of the enclosures is not sufficient after purging Pressure decreases Seal the enclosure and the installed equipment readjust the leakage nozzle if necessary Pressure controller adjusted incorrectly e g 2 bar static pressure Select 2 0 bar dynamic pressure on the pressure controller i e with throughput of compressed air inert gas MAX pressure exceeded Internal pressure too high Pressure is increasing due to e g heating Readjust the leakage nozzle Control the limit value for Switchpoint max pressure and enter the new value MAX pressure exceeded Air outlet mechanical valve of the control unit is closed or clogged Open or clean the air outlet of the control unit The internal pressure is displayed but there is
17. _ Instructions Control unit Ex p gt 8624 1 Contents 1 2 1 2 2 2 3 Action request Contents 1 PTS sece E E E 2 2 General ar len E 2 3 SENGhal Safety IMOrMAtOT enegeegbegeeuegeggeuE eeen reap eikeen REEE E Ferir gitaa 3 4 Designated EE eege EES 4 5 Technical RE 5 6 Transport Storage and Disposal sissesissssntasavaxciessiccssusdnars iadeiannaencadadadoiolensGeaeaienclne 7 7 ASSEMDIY assassin ccc e eee eae sors FAE ee eves ear POEET Pee ce assesses 7 8 Function troubleshooting NEE 11 9 Setting parameters for the control unit s eeeeeeeeeeeeeceeeeneeeneeeeeeeeeeneneee 17 10 COMMISSIONING EE 24 k WEN E al 24 12 Accessories and Spare Parts siccscassacssaceceralenavensiansadeladdnaneienincdemdsinslasixavsnneincanans 25 13 Type Examination Certificate Page 1 2 cccsssssseeseeeeeeeeeceeeccceeneneeerereeeeeeennene 26 14 Declaration of Conformity stegt tergsgesebeteteredebs ebeh dE AE EEEGEERGE EE dEEAdEE RER 27 General Information Manufacturer R STAHL Schaltgerate GmbH Am Bahnhof 30 D 74638 Waldenburg Phone 49 7942 943 0 Fax 49 7942 943 4333 Internet www stahl de Information regarding the Operating Instructions ID NO 167921 862460300010 Publication Code S BA 8624 1 01 en 30 07 2008 We reserve the right to make technical changes without notice Symbols Used Describes actions to be provided by the user Reaction sign Describes the results or the reacti
18. djusting the purge volume gt Select the Enter purge volume display by turning the selector switch by means of a screwdriver Press the Info OK key to confirm the selection gt Select the desired value by turning the selector switch gt Press the Info OK key to confirm the value gt A request for confirming the value again is prompted gt Press the Info OK key to confirm the value again gt The display switches back to Enter purge volume gt The desired parameter is set L _ Possible adjustment range 5 50 000 Factory settings 100 167921 862460300010 Control unit Ex p 19 S BA 8624 1 01 en 30 07 2008 8624 1 Setting parameters for the control unit 9 6 Setting the switchpoint for the minimum pressure 9 7 20 ei g EE switchpoint switchpoint imbar step confirm min pressure OK min pressure OK min pressure OK xxxxx mbar E xxxxx mbar a 0 05mbar step 07180E02 Fig 9 5 Setting the switchpoint for the minimum pressure gt Select the Switchpoint min pressure display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the desired value by turning the selector switch gt Press the Info OK key to confirm the value gt A request for confi
19. e Select 2 0 bar dynamic pressure on the pressure controller i e with throughput of compressed air inert gas Fuse of the flush valve is defective valve is closed when de energised Change the fuse on the digital proportional valve Purging is interrupted After 5 seconds the remaining purging time is reset to the initial value Air quantity is not sufficient for successful purging Dynamic suction pressure too low Set the suction pressure to minimum 2 bar dynamic pressure MIN pressure not reached Internal pressure of the enclosures is not sufficient after purging Pressure decreases Air quantity is not sufficient for successful purging Cross section of the compressed air inert gas supply is too small Seal the enclosure and the installed equipment readjust the leakage nozzle if necessary Increase the diameter of the air supply tube Pressure controller adjusted incorrectly e g 2 bar static pressure Select 2 0 bar dynamic pressure on the pressure controller i e with throughput of compressed air inert gas After more than 10 seconds the remaining purging time is reset to the initial value Air quantity is not sufficient for successful purging Cross section of the compressed air inert gas supply is too small Increase the diameter of the air supply tube Recalibrate to 1 bar suction pressure Double the purging time 167921 862460300010 S
20. elay is normally closed and opens if the internal pressure has fallen to 0 3 bar over the set value Switchpoint min pressure Prealarm The relay is normally closed and opens when the internal pressure MAX exceeds the set value Switchpoint overpressure Purging The relay is closed during the purging Bypass The relay is closed as long as the bypass in the operating device optional or the external key operated switch optional is activated Table 9 1 Functions of relay K1 Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 Setting parameters for the control unit 9 11 Setting the pressure regulation Pressure Pressure E regulation OK regulation pulsed OK i XXXXXXXXX Two Position H 07185E02 Fig 9 10 Setting the pressure regulation gt Select the Pressure regulation display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the desired function by turning the selector switch pulsed or two position gt Press the Info OK key to confirm the function gt The display switches back to Pressure regulation gt The desired function is set LS Factory settings pulsed 9 12 Setting the bypass function H Function Enter A Function a bypass OK pas
21. m 0 to 51 2 mbar 06 A D converter DSS3 defective Conversion not in value range from 0 to 51 2 mbar 07 Output relay fault Output relay does not switch or does not switch correctly 08 Multiprocessor communication failed 09 A processor is defective Table 8 1 Fault number according to self test time is not displayed Fault Consequence Possible cause Elimination Purging does not start After connecting the operating Fuse in the control unit Technical service by voltage the remaining purging defective manufacturer After connecting the operating voltage and opening the compressed air supply the remaining purging time is not displayed Minimum overpressure for start of purging is not reached Seal the enclosure and the installed equipment readjust the leakage nozzle if necessary Air quantity is not sufficient for successful purging Dynamic suction pressure too low lt Switchpoint purging Set the suction pressure to minimum 2 bar dynamic pressure MIN pressure not reached Internal pressure of the enclosures is not sufficient after purging Pressure decreases Seal the enclosure and the installed equipment readjust the leakage nozzle if necessary Air quantity is not sufficient for successful purging Cross section of the compressed air inert gas supply is too small Pressure controller adjusted incorrectly e g 2 bar static pressure Increase the diameter of the air supply tub
22. ons to the actions taken Bullet Sentinel Describes the notes and recommendations Warning sign Danger from energised parts Warning sign Danger due to an explosive atmosphere gt gt di Je Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 3 1 3 2 General Safety Information General Safety Information Safety Instructions for Assembly and Operating Personnel The operating instructions contain basic safety instructions which are to be observed during installation operation and maintenance Non observance can lead to endangerment of persons plant and the environment Z WARNING Risk due to unauthorised work being performed on the device gt Risk of injury and damage to equipment Assembly installation commissioning operation and maintenance must only be performed by personnel who are both authorised and suitably trained for this purpose Before assembly commissioning gt Read through the operating instructions Give adequate training to the assembly and operating personnel gt Ensure that the contents of the operating instructions are fully understood by the personnel in charge gt The national installation and assembly regulations e g IEC EN 60079 14 apply When operating the device gt Ensure the operating instructions are made available on location at all times Observe safety instructions gt Observe
23. p 8624 1 167921 862460300010 S BA 8624 1 01 en 30 07 2008 Setting parameters for the control unit 9 Setting parameters for the control unit Z WARNING Danger from energised parts gt In order to set the parameters the cover of the control unit must be removed while the unit is energised gt Open the cover only if guaranteed that there will not be any potentially explosive atmosphere until closing the cover gt Do not touch live parts 9 1 Display and operating elements Ex p Control unit BETRIEB Gehausedruck 1 0 80 mbar 2 3 Fig 9 1 Display and operating elements Display Function operating element 1 Display Remaining purging time is displayed during purging Internal pressure is displayed during normal operation Error codes or fault messages are displayed in case of fault Saved parameters or parameters to be changed are displayed 2 Selector switch Selecting and changing parameters 3 Info OK key Loading and confirming parameters 9 2 Displaying setting parameters Displaying parameters gt Remove the cover of the control unit gt Toggle between the different parameters by pressing the Info OK key for displayable parameters see fig 9 2 L The control unit will return to the normal mode if the Info OK key is not pressed for 10 s
24. pressure of the enclosure falls below the set MIN value factory settings 0 8 mbar X The internal pressure of the enclosure exceeds the set MAX value factory settings 15 0 mbar X The volume flow compressed air or inert gas falls below the adjusted minimum flow factory settings 0 6 I s L After having eliminated the fault the control unit automatically starts a new purging process 20 0 18 0 16 0 14 0 12 0 10 0 8 0 6 0 4 0 2 0 0 0 gt T1 T2 T3 Fig 8 3 Fault during purging T1 Purging starts after connecting the power and compressed air supply T2 The internal pressure starts increasing T3 Purging is cancelled 167921 862460300010 Control unit Ex p 13 S BA 8624 1 01 en 30 07 2008 8624 1 Function troubleshooting 14 Fault during normal operation Normal operation is automatically deactivated if X Power supply fails for more than 2 seconds X The internal pressure of the enclosure falls below the set MIN value factory settings 0 8 mbar X The internal pressure of the enclosure exceeds the set MAX value factory settings 15 0 mbar L After having eliminated the fault the control unit is activated automatically The control unit starts a new purging process if the pressure had fallen below the MIN value 20 0 18 0 16 0 14 0 12 0 10 0 8 0 6 0 4 0 2 0 0 0 gt T1 T2 T3 T4 TS T6 T7 T8 Fig 8 4 Fa
25. rming the value again is prompted gt Press the Info OK key to confirm the value again gt The display switches back to Switchpoint min pressure gt The desired parameter is set LS Possible adjustment range 0 8 mbar 25 0 mbar Factory settings 0 8 mbar Setting the switchpoint for the maximum pressure Ce H ior a Switchpoint Switchpoint 1mbar step confirm overpressure OK overpressure Hor overpressure OK xxxxx mbar xxxxx mbar A 0 05mbar step 07181E02 Fig 9 6 Setting the switchpoint for the maximum pressure gt Select the Switchpoint overpressure display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the desired value by turning the selector switch gt Press the Info OK key to confirm the value gt A request for confirming the value again is prompted gt Press the Info OK key to confirm the value again gt The display switches back to Switchpoint overpressure gt The desired parameter is set LS Possible adjustment range 0 8 mbar 25 0 mbar Factory settings 15 0 mbar Control unit Ex p 8624 1 167921 862460300010 S BA 8624 1 01 en 30 07 2008 Setting parameters for the control unit 9 8 Setting the minimum volume flow 9 9 S BA 862
26. rotection Duty Therefore we must point out that 1 all the devices and or systems which are sent back to R STAHL for repair must be free from hazardous substances acids caustics solvents explosive gas compounds etc 2 all the devices and or systems which are sent to R STAHL must be handled in a way that they do not contain any dangerous liquids or other hazardous substances Thus devices and or systems that have come into contact with dangerous substances see GefStoffV must be neutralised 3 the measures carried out under 1 and 2 during service and repair works must be confirmed in writing 4 the costs that arise due to the disposal of hazardous substances during a repair will be invoiced to the owner 12 Accessories and Spare Parts Z WARNING Use of non approved accessories and spare parts gt The manufacturer s liability and warranty expire Use only original accessories and original spare parts manufactured by R STAHL 167921 862460300010 Control unit Ex p 25 S BA 8624 1 01 en 30 07 2008 8624 1 Type Examination Certificate Page 1 13 Type Examination Certificate Page 1 1 EC Type Examination Certificate 2 Sg eege Ex explosive atmosp Gen Certifi cate Numt os 4 for the equipmen SCH of the manufactu Age o r Fon 49 0 811 986 1 Faprodiced without any change ehe e a allowed by the T V NORD GER 16792
27. sword e ok bypass ON OK 0000 0 9 DN lt OFF gt OFF KE 4x E Fig 9 11 Setting the bypass function gt Select the Function bypass display by turning the selector switch by means of a screwdriver gt Press the Info OK key to confirm the selection gt Select the first digit of the password by turning the selector switch gt Press the Info OK key to confirm the first digit gt Repeat this process for the second to fourth digit of the password gt The display switches to Function bypass ON lt OFF gt gt The desired function is set gt Select the desired function by turning the selector switch gt Press the Info OK key to confirm the selection gt The display switches back to Function bypass gt The desired function is set L Factory settings OFF lt Fa 07186E02 167921 862460300010 Control unit Ex p 23 S BA 8624 1 01 en 30 07 2008 8624 1 Commissioning 10 Commissioning 11 Before commissioning ensure that X the cover of the control unit is correctly closed X unused cable entries are sealed with plugs certified to Directive 94 9 EC and unused holes are sealed by stopping plugs certified to Directive 94 9 EC X the operating mode and the purging process is set according to the corresponding zone Maintenance 11 1 Regular Maintenance Work
28. ult during normal operation T1 Purging is finished The preset internal pressure of the enclosure is adjusted 2 bar The devices in the Ex p enclosure are connected T2 Normal operation starts The internal pressure is adjusted to the nominal value 2 bar T3 The internal pressure starts falling The devices in the enclosure are switched off when reaching the MIN value T4 Repeated purging T5 Normal operation starts T6 The internal pressure starts increasing The increased internal pressure cannot escape via the mechanical valve of the control unit T7 The devices in the enclosure are switched off when reaching the MAX value T8 After pressure relief normal operation starts again without repeated purging Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 8 4 Troubleshooting Function troubleshooting Fault Explanation Elimination number 01 Check sum error Eprom defective Inform the technical service of the manufacturer 02 Remote control defective Replace the remote control 03 Eprom error Eprom defective The values of the same Inform the technical service of the manufacturer variables are different in all three Eproms 04 A D converter DSS1 defective Conversion not in value range from 0 to 51 2 mbar 05 A D converter DSS2 defective Conversion not in value range fro
29. use the device for its intended purpose gt Otherwise the manufacturer s liability and warranty expire gt The device may only be used under the operating conditions described in these operating instructions gt The device may only be used in hazardous areas according to these operating instructions 4 Control unit Ex p 167921 862460300010 8624 1 S BA 8624 1 01 en 30 07 2008 5 Technical Data Version Safety specific data Gas explosion protection Certificates Rated operational voltage Rated operational current Ambient temperature Housing material Switching threshold Terminals Rated current Rated cross section Terminal capacity Control Unit Il 2 G Ex mb e ia px ia IIC T4 or II 2 G Ex mb e ia px IIC T4 TUV 07 ATEX 554304 12V 24V DC 24 V 115 V AC 10 48 62 Hz 230 V AC 8 5 10 48 62 Hz 250 VAC 5 15 48 62 Hz 250 mA at 12 24 V DC 300 mA at 24 V AC 60 mA at 115 V AC 30 mA at 230 250 V AC 30 C lt Tamp lt 60 C Epoxy resin glass fibre reinforced black antistatic of the output relay according to DIN VDE 0435 Contact potential Typeof max current Power factor cos om current value 250 V AC 6A 1 240 V AC 3A 0 3 24 V DC 6A 30 V DC 25A 32 A for rated cross section and Ta lt 40 C 4 mm 12 AWG 0 2 4 mm 24 12 AWG Dimensional drawings all dimensions in mm subject to alterations
30. y unit Control unit Ex p 8624 1 I 06657E00 167921 862460300010 S BA 8624 1 01 en 30 07 2008 Transport Storage and Disposal 6 Transport Storage and Disposal Transport gt Shock free in its original carton do not drop handle carefully Storage gt Store in a dry place in its original packaging Disposal gt Ensure environmentally friendly disposal of all components according to legal regulations 7 Assembly c _ Any mounting position is possible but make sure that the display is still legible 7 1 Drilling of the assembly bore holes 06357E00 Fig 7 1 Drill pattern for control unit Drill the following assembly holes on the housing wall X 4 threaded holes M5 see Fig 7 1 X 1 hole 35 mm for intake screw connection see Fig 7 1 X 1 hole 17 mm for air supply unit 167921 862460300010 Control unit Ex p 7 S BA 8624 1 01 en 30 07 2008 8624 1 Assembly 7 2 Setting of the leakage air volume at the air supply unit LS The leakage nozzle is set at factory to an air volume of 15 l min at a pressure of 2 bar The pressure controller is set at factory to a pressure of 2 bar 0 10 20 30 40 50 60 70 80 90 100 l min 06079E00 pressure set on pressure controller Fig 7 2 Leakage air diagram 06080E00 Fig 7 3 Setting
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