gazex MD-2 Manuals

Warszawa Control Unit type USER’S MANUAL edition 2U3en MD-2 MD-2.A MD-4 MD-4.A series U3 Read carefully this entire manual BEFORE installation. The installation can be started after the content of this manual has been fully understood. Follow the recommendations and warnings provided in this manual to maintain safety when installing and operating the unit. Keep the manual as reference for the User of the Two-Threshold Gas Detection System. MD-2(4).( A ) Control Unit, User’s Manual edition 2U3en gazex’2011 v1108 Page 1 /14 1. Application and compatibility table page 2 2. Specifications 3 3. Description and connection of MD in the system 4 4. Installation of MD 7 PROBLEM? Helpful tips 10 5. Maintenance / operation 10 Periodical Inspection Protocol 12 PRODUCER: PRODUCER: ©gazex ’2011 All right reserved. Reproducing and copying of this manual in whole or part without consent of GAZEX is prohibited. Logo of gazex, name of gazex, dex, ASBIG, Active Safety System of Gas System are reserved trademarks of GAZEX Logo of TÜV CERT EN ISO 9001 is a reserved trademark of TÜV Rheinland Euroqua. Work and live SAFER with us!!! ©gazex MD-2(4).( A ) Control Unit, User’s Manual edition 2U3en gazex’2011 v1108 Page 2 /14 1. APPLICATION Control units, types MD-2, MD-2.A, MD-4, MD-4.A of U series are intended ONLY for control of and supplying power to gas detectors of DEX® type - F and FA series and DG type - F1 and FvU series, manufactured by GAZEX for use in Two-Threshold Gas Detection System. Each of the mentioned units is referred to hereinafter as „MD” module (or control unit) unless the description refers to other specific model. Terms: „Detector” or „DEX” used hereinafter shall refer to DEX/F... and DG detectors for all gas types unless the description shall refer to other specific model. NOTE: Operation of MD-series control units with DEX® detectors of C series, versions M... and DG series M... is allowed provided that the maximum permitted lengths of connection cables between the detector and the module (described in Section 4.2 of this manual) are reduced by 50%. The unit can control operation of one or two (MD-2, MD-2.A) or up to four (MD-4, MD-4.A) two-threshold DEX and/or DG detectors (various detector types can be used at a time). Features and functions of MD:  - provides 9V voltage to individual detectors (including load control) – can operate with DEX/F... detectors  - controls the cable connection with the detectors (provides signals in case of a break of any conductor),  - provides optical signals and stores alarm states of each detector and state of control outputs,  - allows manual release of output command signals (without a need to generate alarm signals of detectors),  - allows continuous 12V DC power supply for additional devices („MDX” terminal)  - allows operation with additional modules (cascade-wise) through alarm input (galvanically isolated)  - 12V voltage alarm outputs supply power to additional acoustic and optical signalling devices  - contact outputs (galvanically isolated from the system) control fans, motors, contactors and information boards  - „EMERGENCY” contact output (galvanically isolated from the system) informs on emergency state of the module. 1.1.TABLE OF COMPATIBILITY Type of Detector Series/models MD Control Unit series U3, U2, U1, MCU, MC MB,MA,M(7...9) M(1...6), nx DEX/F ( DEX-nn ) ++ -- -- DEX/FA ( DEX-nE ) ++ + -- DEX/C Cn (without DEX-2) + ++ + DEX series H nHn, nx (without DEX-2) + ++ + DG v.F1 All models ++ + + DG series M Mn + ++ + DG series H nHn, nx (without DG-2) + ++ + DEX-2*, DG-2* All series -- -- + * - without DEX-2.L and DG-2.L Legend: n = digit x = any capital letter ++ = recommended cooperation (full functionality of the set) + = conditional cooperation (with limited functionality or installation parameters of the set) -- = cooperation not allowed NOTE: In view of the continuous improvement of products and the desire to provide full and detailed information on those products and to offer knowledge necessary to properly operate the products for a number of years, on the basis of the previous experience of Customers, GAZEX reserves the right to introduce minor changes in specifications of the products delivered, not indicated in this Manual and to modify its content. Therefore, we ask you to verify and confirm with the Manufacturer that the version of the User’s Manual in your possession is up-to-date (providing type and series of the device being operated and the number of the manual version indicated in the footer of the document). 2. SPECIFICATIONS Supply voltage MD-2, MD-4 - 230V AC, 50Hz (allowed voltage fluctuations: +10%,-14%) MD-2.A, MD-4.A - 12V DC ( allowed: 10.5V ÷ 13.8V=) Power consumption max. 15W (MD-...A : max 12W) Operating temperature +5C to 35C recommended optimal, -10C to +40C allowed constantly, -15 C to 45C allowed periodically (<2h/24h) Number of measurement channels 2, two-threshold detectors ( MD-2... ) 4, two-threshold detectors ( MD-4... ) Alarm thresholds two: warning - ALARM 1 ( A1 ), alarm - ALARM 2 ( A2 ) Alarm memory for each channel and each level - optical, joint acoustic, output signal memory of each level – optical (possibility to deactivate with W2 function switch „BEZ PAM.”) Memory resetting using button on front plate (accessible when cover lifted) Signal interlock inputs: approx. 60 s, after turning the power on; outputs: approx. 20 s (delay), possibility of permanent interlock (service mode) using W2 function switch „SERWIS” Optical indication (for each detector and output) A1 – red LED – 1st gas concentration threshold exceeded A2 - red LED – 2nd gas concentration threshold exceeded Acoustic indication internal piezoceramic siren (intermittent signal = module requires servicing), volume: approx. 60dB/1m; possibility of shutting down (using W2 function button „CISZA”) Supplying power to sensors 9V DC, short-circuit- and overcurrent-protected 200mA Failure indication yellow LED Detector power on indicator green LED (separate for each detector), overload indication Quick release of output signals manual, using „TEST” button under terminal strip cover, simultaneous for both thresholds Unit powering control green LED; indicates also heating state Contact outputs NC and NO for A1, A2, voltage-free; current-carrying capacity: max. 4A (with resistance load) or max. 2A (with inductive load -motors) or max. 0.6A (with purely inductive load – fluorescent lamps); max. 250V AC or 24V DC; NO and NC for AWARIA (FAULT), voltage-free, current-carrying capacity: max. 4A (with resistance load) or max. 2A (with inductive load); max. 30V AC or 24V DC Voltage outputs  12V DC , not stabilized for A1 and A2 states, total load = max. 0.3A, for connection of SL..., S-3, LD... signalling devices  12V DC continuous, not stabilized, for powering MDX module or other devices, max. load 0.2A Alarm inputs 12V DC voltage inputs (5÷ 16V, max. 20mA) for A1, A2; instantaneous, galvanically isolated from other MD circuits; for cascade connection of modules or other devices Overload protections fuse of primary 230V AC or 12 V DC supply circuit, self-resetting fuses with shorting current limitation of NAP.12V outputs, electronic fuses with current limitation for each detector Dimensions, weight 215 x 240 x 115 mm, (H x W x D in mounting positions); approx. 1.5kg Housing ABS, 6 cable glands, IP54, 3-point mounting MD-2(4).( A ) Control Unit, User’s Manual edition 2U3en gazex’2011 v1108 Page 3 /14 Fig.2. Required mounting area Template for hole drilling is located on cardboard box lid. ~ 240 minimum Mounting space 198 ~120 137 215 Cable mounting space Mounting holes 240 120 Top view 3. DESCRIPTION AND CONNECTION METHOD Picture.3.1 MD front plate (mounting position) Input state control lamps (for individual detection lines) Output state control lamps Serial/version number Alarm memory resetting button Terminal compartment cover Main switch Main fuse MD-2(4).( A ) Control Unit, User’s Manual edition 2U3en gazex’2011 v1108 Page 4 /14 W2 option selector „TEST” button W1 Power switch for detectors NOTE: terminals [M] of module earth are galvanically separated from earth of 12V ALARM INPUTS (terminal „_„ [19]) ! 12 V E MD-4.A + ACCUMULATOR 7Ah or 17Ah PS-3 POWER SUPPLY 230V AC 12V DC power supply connection Other conections as above Cascade connection of units MD-... UNIT No. n UNIT No. n+1 (main) MD-... 12V WEJŚCIA ALARMOWE WYJ. NAP.12V A1 A2 ALL SERIES - A1 A2 UNIT No. n-1 M + M + DETEKTORY 01 02 19 20 21 15 16 17 18 + - N L MD-2.A 1A PE 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 1 1 2 3 2 3 4 N L 230V 50Hz MD-4 vU3 A2-ALARM2 A1-ALARM1 com NO NC NC com NO WYJŚCIA STYKOWE com NO NC AWARIA WYJ. STYK. DETEKTORY MDX A2 A1 WEJŚCIA ALARMOWE 12V 1 A1 A2 M M M M 1 1 1 1 2 2 2 2 M M + + + + + OPCJE SERWIS CISZA BEZ PAM ON ON W 2 TEST W1 ON WŁĄCZ. DEX DG , SL-21 -31 , MD-2(4)... B C3 A M 1 2 + WYJ.NAP.12V Fig. 3.2. Terminal chamber – electrical connections