Industrial Scientific Oldham MX52 Commissioning, Operating And Maintenance Manual Download | Manualshive

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3.3.5.

Measuring unit

One minute after starting up, and if no test action is performed on the keypad, the unit successively
scans all the channels in service and displays the measured values.

Examples of display

OR

-

Each channel is interrogated for 10 seconds.

-

The user can interrogate a channel manually by selecting that channel with the + and -
keys to obtain a manual display for one minute.

-

The user can return to normal cyclic scanning during that one-minute period by
simultaneously pressing the + and - keys. The display panel then shows alternating
displays, three times in succession:

For example:

then

Channel 1

x x LEL CH4

Channel 2

x x x ppm CO

Channel 5

x x x ppm CO

normal scan

x x x ppm CO

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Summary of Contents for Oldham MX52

Page 1: ...C CO OM MM MI IS SS SI IO ON N I IN NG G O OP PE ER R A AT TI IN NG G A AN ND D M MA AI IN NT TE EN N A AN NC CE E M MA AN NU U A AL L Ref NP52UGB...

Page 2: ...ECIFIC USE C C L L A A U U S S E E S S C C O O N N C C E E R R N N I I N N G G P P R R O O P P E E R R T T Y Y Drawings plans specifications and information included in this document contain confident...

Page 3: ...shielded cable 10 2 3 5 FLAME detectors 2 3 or 4 connecting wires for shielded cable depending on utilization 10 2 3 6 CO2 detector of type Ventostat VT 12 2 3 7 Specific case of intrinsic safety dete...

Page 4: ...O SERVICE 42 5 1 Programming the unit 42 5 2 Programming the measuring channels 42 5 2 1 Programming 42 5 2 2 Copy 43 5 3 Calibrations 43 5 4 4 20 mA output adjustment for a measurement channel 47 6 M...

Page 5: ...ogrammed The number of line PCBs is always equal to the mixed even number greater than the number of channels used divided by two M MA AI IN N C CH HA AR RA AC CT TE ER RI IS ST TI IC CS S Rack 3U 19...

Page 6: ...open or closed at rest Current output 4 20 mA per measuring channel Common audio alarm that can be acknowledged in the case of occurrence of gas alarms 1 2 Rack The MX52 rack is of the 3U 19 type Over...

Page 7: ...using the main On Off switch below and to the left of the FRONT circuit see Figures 4 and 26 2 Electrical connections of the MX52 Unit Fig 8 The MX52 unit is equipped with a pulse automatic device wh...

Page 8: ...y SHIELDED cables The utilization of shielded cables is MANDATORY The earth braid of shielded cables must be connected to the earth at one end only CAUTION Each channel is configure d in the factory f...

Page 9: ...l designations are as follows Thermovelo detectors of type EC 11 sensitive to temperature variations Ionic detectors of type EI 1 100 sensitive to smoke Optical detectors of type EO 1 100 sensitive to...

Page 10: ...types of terminal block see table below Model 20 20 U 20 20 UC 20 20 UB 20 20 LC 20 20 UNC 20 20 LBC 20 20 I Type of terminal block B C A C C C A Resistance of cable unit In the case of local 24 V DC...

Page 11: ...c safety detectors Two types of intrinsic safety barrier can be used Z787 EX and MTL787S PRECAUTIONS Before connecting the barrier to the unit check that the voltage is 25 V DC A short circuit in the...

Page 12: ...with 2 wires or 3 wires that can be supplied with power between 19 V DC and 32 V DC and that supplies a standardized current signal of between 4 and 20 mA can be connected to the MX52 unit The connect...

Page 13: ...ggered a solenoid valve connected to relay AL2 will be actuated as soon as alarm 2 is triggered For all channels A common relay associated with the triggering of alarm 3 for the 16 channels By program...

Page 14: ...MEASUREMENT I 4 mA Full scale I 20 mA Out of range or in doubt I 23 2 mA An example of the connection of a multi channel recorder is given in Fig 25 2 4 3 RS 232 and RS 485 outputs RS232 OUTPUT A com...

Page 15: ...lectrical resistance for plu 5V a with RS 485 shielded no programmed polarization resistor for moins GND b without RS485 shielded programmed polarization resistor for moins GND End loop resistor It is...

Page 16: ...connector 5 plugs on the back or the micro board see fig 6 item B 3 3 S ST T A AR RT T I IN NG G U UP P 3 1 Checking the installation It is checked that at least all connections have been made and th...

Page 17: ...ed and the current outputs are 1 mA for the channels in service The unit then performs a self test on its buzzer and all its night emitting diodes At the end of this one minute period the channels in...

Page 18: ...ing 3rd red AL3 not triggered Threshold AL3 exceeded by mean or time automatic clearing Yellow No fault Fault on channel Channel being calibrated or programmed Detector being calibrated 3 3 3 Alarm th...

Page 19: ...inguished Relay disengaged Buzzer stopped No Illumination of flashing alarm LED After T2 time START Threshold exceeded Time T1 exceeded Illumination of flashing alarm LED LED steady mode Buzzer stoppe...

Page 20: ...M 2 NORMAL CYCLE WITH AUTOMATIC CLEARING START Threshold exceeded Time T1 exceeded LED extinguished Relay disengaged Alarm LED illuminated in steady mode After T2 time Relay engaged Buzzer engaged END...

Page 21: ...um operating time for each relay t AL1 tR1 R2 t AL2 Threshold AL2 Threshold AL1 Starting of relay R1 Stopping of relay R1 Starting of relay R2 Stopping of relay R2 min tAL1 Min operating time for alar...

Page 22: ...iate results Display SUP The relays are actuated if the thresholds are reached The general fault relay is actuated The 4 20 mA output of the channel is greater than 20 mA ALl these states are memorize...

Page 23: ...r 10 seconds The user can interrogate a channel manually by selecting that channel with the and keys to obtain a manual display for one minute The user can return to normal cyclic scanning during that...

Page 24: ...e FRONT panel for maintenance Item D Fig 26 NORMAL MODE Manual display of previous channel Combined with the PLUS key to restart the channels automatic display cycle MAINTENANCE MODE Manual display of...

Page 25: ...hrough a menu CALIBRATION key item C Fig 26 accessible after opening and swivelling the front panel To set a channel to CALIBRATION mode To quit that mode 4 1 3 Potentiometers On the FRONT circuit eac...

Page 26: ...larms LED and relays at the same time CHANNEL COPY programming To copy the complete programming from one channel to another time saving UNIT programming To program the whole configuration of the MX52...

Page 27: ...LING OF THE VARIOUS MENUS NORMAL DISPLAY P Programming Channel x x Programming Simulation Programming Channel xx copy Programming Unit Programming Uploading REMINDER Fig 26 P Programming key Keys used...

Page 28: ...Off On then ENTER CHOICE OF RANGES 10 30 100 300 1000 2000 xxxxU then ENTER SELECTION OF POINT POSITIONING 100 10 0 1 00 0 100 0 010 0 001 then ENTER 0 to 2000 then ENTER 0 to 2000 then ENTER Seuil A...

Page 29: ...creasing Decreasing then ENTER Increasing Decreasing then ENTER Increasing Decreasing then ENTER Normal Parking then ENTER Cycle Normal P Alarm 2 Increasing Alarm 3 threshold 75 Alarm 1 Increasing Ala...

Page 30: ...Manual Automatic then ENTER Manual Automatic then ENTER Time delay Mean then ENTER Negative Positive then ENTER Alarm 3 Time delay Ack alarm 1 Manual Ack alarm 2 Manual Relay 1 safety Negative P P P...

Page 31: ...TER Free Set to 0 Set to 1 then ENTER Free Set to 0 Set to 1 then ENTER Free Set to 0 Set to 1 then ENTER Free Set to 0 Set to 1 then ENTER Relai 2 Free Relay 2 safety Negative Relay 1 Free Relay 3 Fr...

Page 32: ...this area then ENTER CH4 CO 2S etc then ENTER LEL ppm etc then ENTER Time Time interval between the triggering of the AL LED and of the corresponding relay or the minimum operating time of the relay...

Page 33: ...ing the down key Parameters specified in square brackets are the VALID parameters in memory 1 Free This means that the relay can be activated when programming alarm thresholds are triggered Set to 0 T...

Page 34: ...lion ppb parts per billion UEG Unter Explosion Grenze LEL in German LEL Limite inf rieure d explosivit LEL in French bar unit of pressure mb unit of pressure millibar Rh relative humidity m s metres p...

Page 35: ...Phosphine HF Hydrofluoric acid CFC Freons CO2 Carbon dioxide ASH Arsine SiH4 Silane BUT Butane PRO Propane GNT Natural gas ETY Ethylene PNT Pentane HEX Hexane PRY Propylene ACY Acetylene ETA Ethanol...

Page 36: ...hat this channel is in simulation mode To artificially vary measurement on the display panel on the 4 20 mA output and trigger alarms LED and relays ESCAPE ECHAPPE To exit from this menu and return to...

Page 37: ...o be copied Copy the channel s configuration to another channel xx indication of Other channel number using keys Validation of copy Programming Copy channel xx NORMAL DISPLAY P P Copy channel Channel...

Page 38: ...sh German Spanish then ENTER Choice of transmission speed with computer 120024004800960019200Bauds then ENTER Choice of slave address this unit 0 to 250 then ENTER NORMAL DISPLAY P P Programming Unit...

Page 39: ...ny triggering of buzzer NO YES then ENTER Utilization of common audio alarm buzzer Function in series with buzzer jumper NO YES then ENTER YES If copy of buzzer on alarm 3 and with buzzer option into...

Page 40: ...TIFIC personnel and personnel approved by INDUSTRIAL SCIENTIFIC can be made this operation Display of menu Validation of utilization of menu Display of menu confirmation Data transfer request Validati...

Page 41: ...ications the Unit programming menu must be used see Section IV 2 on Menus by means of the keypad and the Programming key Then the instructions in the menu should simply be followed CAUTION If the unit...

Page 42: ...ions may be necessary more or less frequently based for example on application field conditions exposure to gas sensor technology and environmental conditions The frequency of calibration is best dete...

Page 43: ...clockwise direction using a screwdriver Adjust the DETECTOR ZERO NOTE If the ambient air is not pure inject air using a synthetic air cylinder and the gas injection pipe or a remote calibrating fixed...

Page 44: ...w LED is extinguished and the C on the display panel disappears The measuring channel now operates normally an calibration has been completed Case 2 Measuring channel connected to a detector with no i...

Page 45: ...d for that purpose see the manualfor the detector concerned Prepare the measuring channel for calibration same operations as in case 1 Adjust the detector zero NOTE If the ambient air is not pure inje...

Page 46: ...ensitivity potentiometer Item A Fig 27 Stop the injection of the standard gas wait for the measurement to return to zero on the MX52 display panel Then press the CALIBRATION key item C Fig 27 The flas...

Page 47: ...display panel the triggering of alarms LED and relays the slaving controls and the 4 20 mA current output Cause a fault to occur such as a line fault by disconnecting a detector wire to check the cor...

Page 48: ...fuses blown Replace the 24 V DC fuses located at the back of the MX52 unit item B Fig 5 24 V DC internal protection fuse blown Replace the 24 V DC fuse located on the power board item C Fig 5 CAUTION...

Page 49: ...ed by using the Unit programming menu buzzer connected An alarm is triggered the LED lights up and the relay is actuated but there is no audio alarm The buzzer strap is not correctly positioned Fall t...

Page 50: ...e modified by using the Channel programming menu self calibration and choose CAL detection YES Impossible to upload data from the MX52 to a computer Faulty electric connections Check the connections o...

Page 51: ...replacement parts DESIGNATION REFERENCE Complete power unit 6311018 Power board 6451422 Toroidal transformer 6111194 Mains power supply fuse 2 A time delayed 6154697 DC power supply fuse 12 5 A time...

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Page 82: ...dity 0 to 95 humidity no condensation ILLUMINATED INDICATIONS Fluorescent display panel 2 lines of 16 characters 80 light emitting diodes power on gas alarms faults POWER SUPPLIES 103 to 122 V AC in o...

Page 83: ...for alarm 3 or audio alarm transfer 1 common fault relay SIGNAL OUTPUTS 4 20 mA analog per channel maximum load resistance 600 Serial RS 485 J BUS common MISCELLANEOUS OUTPUTS Alarm remote acknowledge...

Page 84: ...Areas Installation will comply with all applicable standards and particularly with EN 60079 14 EN 60079 17 and EN 50281 1 2 The MX52 device must not be subject to intense mechanical vibrationand must...

Page 85: ...of the device in terms of value measured and fault processing as a function of the input current value supplied by the detector Where the user connects a brand of detector other than INDUSTRIAL SCIEN...

Page 86: ...e device must supply a suitable power supply voltage allowing for cable voltage losses 9 3 3 Power supply and load resistance characteristics Maximum current available between terminals 2 and 3 350 mA...

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