oldham sa
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1. 48 terminal block See figure 12 Detector terminal block Cable 3xn shielded 6 maxin loop between 2 and 3 MX48 units CONNECTION OF A FLAME DETECTOR EQUIPPED WITH TERMINAL BLOCK OF TYPE A FIGURE 13 35 Detector terminal block Type B MX48 terminal block See figure 12 1 Cable 3xn shielded 6 maxinloop between 2 and 3 MX48 units CONNECTION OF A FLAME DETECTOR EQUIPPED WITH TERMINAL BLOCK TYPE FIGURE 14 36 48 terminal block See figure 12 Detector terminal block Type C heska Cable 3xn shielded 6 max in loop between 2 and 3 MX48 units CONNECTION OF FLAME DETECTOR EQUIPPED WITH TERMINAL BLOCK OF TYPE C FIGURE 15 37 ector terminal block MX48 terminal block See figure 12 Galvanic isolator Cable 3xn shielded 6 maxin loop between 2 and 3 MX48 units Remark The detector relay can be used in local mode The galvanic isolator is located in the immediate vicinity of the MX48 unit EXAMPLE OF UTILIZATION OF THE 4 20 mA SIGNAL SUPPLIED BY FLAME DETECTOR UV IR OR EQUIPPED WITH TERMINAL BLOCK OR FIGURE 16 38 Detector terminal block Type B Detector terminal block Type MX48 terminal block see figu2. ASURING UNIT OLDHAM obricatio DETECTION GAZ MESURE L EMISSION GAS DETECTION STACK GAS MONITORING ISO 9001 Francaise OLDHAM SA GAS AND FLAME DETECTION STACK GAS AND DUST MONITORING We thank you for choosing an OLDHAM SA instrument We have taken every step to ensure that this equipment continues to give you complete satisfaction Please read the instruction manual carefully before using the instrument OLDHAM DETECTION GAZ MESURE L EMISSION GAS DETECTION STACK GAS MONITORING LIMITS RESPONSIBILITY OLDHAM SA hereby rejects any and all responsibility with regard to any person for material damage bodily injury or death resulting in whole or in part from the inappropriate use installation or storage of its equipment not conforming to the instructions and to warnings and or not conforming to standards and regulations in force OLDHAM SA does not allow or authorize any company person or legal entity to assume such responsibility on the part of OLDHAM SA even if involved in the sale of the products of OLDHAM SA OLDHAM SA shall not be liable for any direct or indirect damage or any direct or indirect legally awarded damages resulting from the sale and use of any of its products UNLESS THOSE PRODUCTS WERE SPECIFIED AND CHOSEN BY OLDHAM SA FOR THE USE MADE OF THEM OWNERSHIP CLAUSES Sketches drawings specifications and data included herein contain confidential information
3. Mains filter Alarm relay Fault relay Mains fuses Clear and RS485 Power supply terminal terminal 24 V fuses MX 48 POWER SUPPLY CARD main components Figure 3 Ref B 27 Buzzer switch Card connector Connector for line card Power supply card connector A DE 9 pin ER RS232 poda Lao 3 0 0 DEF sub D connector on reference Fluorescent display Calibration key ref C Programming key ref D Maintenance ref B Don o CN UT we ode lus us 48 FRONT LINKAGE CARD display micro keypad FIGURE n 4 28 Zero detector adjustment detector sensivity adjustment Connector for display card OPF E C Support for programming the 1 measurement channels measure Programming following ment the type of detector used channel TOS 95 rn on len RSS eue FUNCTIONS OF THE VARIOUS 5 On the MX 48 measurement channels card FIGURE 5 Connector for display card Support for programming the measurement channels Potentiometer for adjustments Fuses 125 mA fuse TL Measurement 9290 0999 2 channel alarm lt lt AD lt lt
4. Resistance of cable unit In the case of local 24 V DC power supply 8 5 ohms maximum per wire i e 17 ohms in loop Inthe case of power supply via the MX48 unit 3 ohms maximum per wire i e 6 ohms in loop 4 ohms for detector 20 20 I IR 3 Connection on MX48 unit ONE detector per measuring channel ONLY detector equipped with a terminal block of type A see Fig 13 detector equipped with a terminal block of type B see Fig 14 detector equipped with a terminal block of type C see Fig 15 Example of the utilization of the 4 20 mA signal from flame detectors equipped with connectors of type A or C see Fig 16 Example of the utilization of detectors equipped with connectors of either type A or type B and with auxiliary power supply The auxiliary power supply must be able to supply power to the number of detectors planned in the measuring loop see Fig 17 11 REMARK In the case of this application the maximum of five flame detectors can be connected in the measuring loop Example of the utilization of IR3 or UV IR detectors equipped with connectors of type A with a local junction box and galvanic insulation see Fig 18 2 3 6 CO2 detector of type Ventostat VT Connection 48 unit see Fig 20 Resistance of detector unit power cable 12 ohms maximum per wire i e 24 ohms in loop 4 20 mA output maximum load 280 ohms whole loop 2 3 7 Specific case of intrin
5. 2 off MX48 box see Fig n 1 tay for holding up the cover Transformer Power supply board see fig N 3 Second measurement First measurement channel channel board see fig N 7 board see fig N 7 OVERALL VIEW OF THE 48 15 PG9 cable glands casing open FIGURE 2 2 INSTALLATION CONNECTIONS 2 1 Installation recommendations The MX48 unit can be installed in any premises without an explosive atmosphere They should preferably be placed in ventilated and monitored location guardhouse control room instrumentation room etc Attachment is to be ensured in accordance with the dimensions in Figure 1 3 attachment points REMARK In order to permit the swivelling front panel of the unit to be opened completely allowance must be made for opening by rotation through 90 downwards see fig 2 end of this manual Before making any connections the unit should be switched off using the main On Off switch below and to the left of the FRONT circuit see Figures 3 rep A 2 2 Electrical connections of the MX48 Unit Fig 8 The MX48 unit is equipped with a pulse automatic device which enables to connect 24 V DC voltage in a lack of 220 V AC voltage so we can use no expansive save power supply 2 2 1 Alternative power supply Voltage 230 V AC 207 to 244 V 50 60 Hz Maximum power 200 VA Maximum current in cable 1 A Cable 3 x 1 5 mm including earth
6. 2 3 9 Parking application CTX300 Co parking toxic gas detectors can be fitted in parallel when a mean gas concentration is to be obtained The detectors must imperatively be located in the same area In this case a maximum of five detectors can be connected see Fig 23 13 2 4 Connecting the unit to external devices 2 4 1 Slaving controls The 8 measuring channels of the MX48 unit are each equipped with two relays which can be used to control external devices sirens solenoid valves extractors telephone calls etc For each measuring channel the relays are distributed in the following manner see Fig 7 arelay associated with the triggering of alarm 1 fig 7 arelay associated with the triggering of alarm 2 fig 7 use of open or closed contacts selected with a jumper see Fig 7 item use of positive or negative safety selected by programming see the CHANNEL programming menu contact outputs on the back of the measuring board see Fig 12 An example of connection is given in Fig 24 asiren connected to relay ALI will be actuated as soon as alarm I is triggered solenoid valve connected to relay AL2 will be actuated as soon as alarm 2 is triggered For all channels Acommon relay associated with the triggering of alarm 3 for the 8channels fig 3 By programming this common relay can also be used for the remote transmission of the audio warning signal This relay will then
7. female sub D DB9 type connector located the back of the micro board fig 4 repA The 48 programming from outside will be possible thanks to this connection RS 232 OUTPUT USING Remove the DB9 connector plug with an internal strap Connect a link cable ref 6315831 which will link the monitor to the computer on the MXAS available female connector DB9 Fig 6 MX48 Female DB9 L J i e um v PC COMPUTER Male DB9 when the using is stopped no connect the cable and put the male DB9 plug again 15 RS 485 OUTPUT PINABLE FIG 8 Several MX48 units can be linked to a single computer which is the master of the network In this case a SLAVE NUMBER by programming unit is asigned to each MX48 unit This RS 485 output can be galvanically insulated as an option 1 case no galvanic insulation mounted insulation component 2 polarization electrical resistances are welded programmed with 1103 and J104 pins 2 case with galvanic insulation mounted and welded insulation component no programmed polarization electrical resistance for plus 5V J104 programming pins a with RS 485 shielded programmed polarization resistor for moins GND J103 programming pins b without RS485 shielded programmed polarization resistor for moins GND
8. 7103 programming pins End loop resistor It is located on the MX48 micro board and must be programmed with the last MX48 unit of the loop by pins with a 120 Ohms value MX stored data are some instantaneous values The RS485 output is a half duplex type RS 485 OUTPUT USING change the sub D DB9 plug connector fig 4 item A Connect the screwed connector terminals 3 4 and 5 located on the power supply board of the 48 unit See connection details fig 8 Owing to mounted wires or not following the mounting and the equipment linked or not on the earth 16 IMPORTANT All details regarding the RS 485 complete description Modbus Jbus format structures adresses aso are developped in a CD R ref CD00003 Fixe CAUTIO A computer or a printer management interface must be used in order to printout the data stored by the MX48 unit See details and possibilities in a CD R ref CD00003 Fixe 2 4 4 Remote acknowledgement It is possible to allow remote acknowledgement by connecting on terminals clear 1 and clear 2 loop 16 mA of the connector located on the power supply board see fig 8 Maximum load impedance 1 K Remark several MX48 units can be connected to the same remote acknowledgement system provided that the polarities are respected Transformer terminal wll ell el vl el Powersupply Clear and RS485 j terminal terminal terminal 17 3 STARTING UP 3 1 Chec
9. Location of connection terminal blocks Fig 8 Protection the phase and neutral wires are protected by time delayed 2 A fuses located at the rear of the power module fig3 Voltage 103 to 122 V AC 50 60 Hz on option CAUTION It is mandatory that the appliance must be earthed A terminal is reserved for this purpose at the back of the power module see Fig 5 This connection is required in order to ensure correct operation of the following mains power interference filter protective devices against electromagnetic interference 222 DC power supply Voltage 21 to 30 V continue The from continue power supply is linked to earth and earth being linked to frame Maximum power 150 W Maximum current in cable 6 3 A Cable 2 x 2 5 mm Location of terminal block see Fig 8 item D Protection by two fuses located at the back of the power module Fig 3 2 3 Detectors Figure 12 REMARK The detectors are linked by SHIELDED cables The utilization of shielded cables is MANDATORY earth braid of shielded cables must be connected to the earth at one end only CAUTION Each channel is configured in the factory for a given type of detector explosive gas toxic gas fire or flame If two different types of detector are interchanged this may result in the destruction of the central unit or of the detector 2 3 1 Explosimetric detectors of PONT type Three connecting
10. 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 20 For example Channel 5 x x x ppm CO then normal scan x x x ppm CO 4 UTILIZATION 4 1 List and functions of the various items of USER equipment for programming and calibration of the unit 4 1 1 Keypads The first is equipped with four touch keys accessible without opening and swivelling the MX48 units FRONT panel the second is equipped with the same keys accessible by opening and swivelling the FRONT panel for maintenance Fig 4 rep B p NORMAL MODE Manual display of previous channel Combined with the PLUS key to restart the channels automatic display cycle MAINTENANCE MODE Manual display of previous channel Decrease value threshold etc Display of previous choice on off etc NO 21 NORMAL MODE Manual display of next channel Combined with the MINUS key to restart the channels automatic display cycle MAINTENANCE MODE Manual display of next menu Increase value threshold etc Display of next chooice off etc YES Audio and visual or audio clearing of an alarm Exit from a current menu Start a self test manually VALIDATE 4 1 2 Maintenance keys PROGRAMMING key Fig 4 item D accessi
11. eene dae cien dec datei eee dao 7 2 2 1 Alternative power supply nett asume tao Ra eR e LEY 7 202 DE power Supply eive diis sas mes nette 8 2222 Detectors PURULENT De P ue NES 8 2 3 1 Explosimetric detectors of PONT type 8 2 3 2 3 wire detectors 4 20 mA 3 connecting wires for shielded cable 9 2 3 3 2 wire detectors 4 20 mA 2 connecting wires for shielded cable 9 2 3 4 FIRE detectors 2 connecting wires for shielded 10 2 33 FLAME detectors 2 3 or 4 connecting wires for shielded cable depending on aa 10 2 3 6 CO2 detector of type Ventostat VIe nan 12 2 22 Specific case of intrinsic safety detectors CTX100 12 2 3 8 Other detectors with standardized current output 13 2 99 Parking 13 2 4 Connecting the unit to external devices amiti 14 2 4 1 SLAVING SSSR 14 2 4 2 4 20 mAvc rrent outputs Fig 2 en ne se 15 2 4 3 RS 232 and RS 485 outputs 15 2 4 4 Remote acknowledeement Lunge eorr asenenc Do ee Uie oe 17 STARTING UP cU 18 3 1 Checking
12. wires for a shielded cable The current commercial designations are as follows CAPTEX 800 810 Resistance of detector unit cable 16 ohms maximum wire i e 32 ohms in loop 1 km for cable 3 x 1 5 mm Connection 48 unit see Fig 10 Example 1 2 3 2 3 wire detectors 4 20 mA 3 connecting wires for shielded cable The current commercial designations are CEX820 CEX870 CTX870 CSC870 CSC50 CEX2040 et CTX2042 Resistance of detector unit cable 16 ohms maximum per wire i e 32 ohms in loop 1 km for cable 3 x 1 5 mm Connection on 48 unit see Fig 10 Example 2 2 3 3 2 wire detectors 4 20 mA 2 connecting wires for shielded cable The current commercial designations are as follows CTX COX 100 CTX COX 200 CTX COX 50 Resistance of detector unit cable 32 ohms maximum per wire i e 64 ohms in loop 2 km for cable 2 x 1 5 mm 2 Connection on 48 unit see Fig 11 Example 2 2 3 4 FIRE detectors 2 connecting wires for shielded cable The current commercial designations are as follows Thermovelo detectors of type 11 sensitive to temperature variations Ionic detectors of type EI 1 100 sensitive to smoke Optical detectors of type EO 1 100 sensitive to smoke Resistance of detector unit cable 28 ohms maximum per wire i e 56 ohms in loop 2 km for cable 2 x 1 5 mm2 Fire detectors can be detected in para
13. HD of relay A b NE Measurement Oj ry ME Channel terminals MX 48 MEASUREMENT CHANNELS CARD main components FIGURE 7 Ref 30 Clear 1 Clear 2 GND 485 A 485 B KZ 5 EEK ELECTRICAL CONNECTIONS TO THE MX48 POWER SUPPLY CARD FIGURE 28 31 Pont detectors Example 1 1 2 3 3 wire 4 20 mA detectors Example 2 MX48 MEASUREMENT CHANNELS CARD EXAMPLE OF CONNECTION OF EXPLOSIMETRIC DETECTORS AND 3 WIRE 4 20 mA DETECTORS FIGURE N 10 32 EXAMPLES OF CONNECTION OF 2 WIRE 4 20 mA DETECTORS AND FIRE DETECTORS ON THE MX48 MEASUREMENT CHANNELS CARD FIGURE 211 Note The 2 7 k resistor on the last is to be placed at the end of detector 3 maximum ine Detector 1 Detector 2 2 2 Fire detectors Ionic R 2x3 9K in or optical 1 4 4 ATTENTION to the configuration of the measurement channel A 2 4 20 mA Example 2 33 TO VW 1 signal 2 minus detector 3 plus 2 4 20 mA current output Contact REL AL1 Contact REL AL2 DETAILS OF CONNECTIONS TERMINAL BLOCK TO THE MX48 MEASUREMENT CHANNELS FIGURE 12 34
14. all shipped equipment is configured to meet your requirements Start up OLDHAM undertakes that our expert technicians will start up your eguipment if you so wish This gives you the guarantee of additional safety H Training OLDHAM undertakes to provide the users of its products with a complete training service a number of engineers specialized as instructors conference rooms equipment available for practical exercises computer equipment display equipment etc Maintenance contract OLDHAM undertakes to offer you open ended maintenance contracts according to your needs so as to give you the guarantee of complete safety one or more visits a year comprehensive or partial warranty renewal by tacit agreement e including the adjustment of measuring units the calibration of equipment and the verification of servo control systems Field servicing OLDHAM undertakes to send out its After Sales Service technicians quickly for servicing on your site This is made possible by the efficient network of our branches throughout France and other countries Factory repairs OLDHAM gives the undertaking that any problem that cannot be solved in the field will be dealt with by the return of the equipment concerned to our factory Teams of specialized technicians are on hand to ensure the immediate repair of your equipment in the shortest possible time so keeping downtimes for your equipment to a minimum For any specific technical qu
15. be associated with all the unit s alarms A fault relay associated with the triggering of channel faults detector failures electrical connections excessively negative zero etc This relay will always be in positive safety mode see Fig 3 The use of open or closed contacts is selected by programming on common board see Fig 3 Common relay contact outputs on the back of the power module Fig 8 REMARK Owing to the breaking capacity of the MX48 unit s relays which is limited to 2 A 250 V AC or 30 V DC external intermediate relays must be used if the devices to be controlled require high power levels The relay contacts are indicated unit switched off 14 2 4 2 4 20 mA current outputs Fig 12 For each measuring channel the MX48 unit is equipped with a 4 20 mA output that can be used to retransmit measurements to a recorder or an external PLC The maximum resistance in loop mode is 600 ohms The earth connections for the 4 20 mA outputs are common and the unit The 4 20 mA lines are not galvanically insulated one from the other The current output varies according to the measurement and has several states as follows starting up the unit lt I mA With FAULT I lt 1 mA MAINTENANCE mode I 2 mA ZERO MEASUREMENT I 4 mA Full scale I 20 mA Out of range or in doubt I gt 23 2 mA 2 4 3 RS 232 and RS 485 outputs RS232 OUTPUT computer can be connected on
16. ble after opening and swivelling the front panel Combined with the key to go back in a menu To quit normal display mode and access the various menus see block diagram of the various menus To scroll through a menu CALIBRATION key Fig 4 item C accessible after opening and swivelling the front panel set a channel to CALIBRATION mode quit that mode 22 SCROLLING THE VARIOUS MENUS NORMAL DISPLAY i Programming Programming E Programming Programming Programming Channel x x Simulation Channel xx copy Unit Uploading REMINDER e Programming key ED Keys used to move 23 5 VIEWS SPECIFIED IN THE MANUAL VIEWS SPECIFIED IN THE MANUAL MX48 DIMENSIONAL PLAN FIGURE 1 25 1 4 turn latches 2 off see Fig 1 Stay for holding up the Transformer Offset keypad Display card see Fig 4 Power supply card see Fig 3 Second measurement channel card First measurement channel card see Fig 7 7 see Fig N OVERALL VIEW OF THE MX48 casing open FIGURE 2 15 PG9 cable glands 26 Connector for display circuit General switch reference A Transformer terminal
17. e l talonnage des appareils et le contr le des asservissements D pannage sur site OLDHAM s engage faire intervenir ses techniciens du Service Apr s Vente rapidement Ceci est possible gr ce la r partition judicieuse de nos agences en France et de nos agents l tranger E D pannage en usine OLDHAM s engage traiter tout probl me qui ne pourrait tre r solu sur site par le renvoi du mat riel en usine Des quipes de techniciens sp cialis s seront mobilis es pour r parer votre mat riel dans les plus brefs d lais limitant ainsi au maximum la p riode d immobilisation Pour toute intervention du Service Apr s Vente en France un num ro Indigo t mis en place le 825 842 843 Strong points Through its qualified personnel OLDHAM undertakes to respond to your needs for advice and order follow up services wherever in the worid you may be OLDHAM undertakes to answer all your technical questions as quickly as possible Quality OLDHAM undertakes to provide you with products and services of a quality that meets your requirements in accordance with the specifications of 150 9001 ATEX standards Reliability and inspections OLDHAM undertakes to supply you with reliable equipment The quality of our production is essential to achieve reliability Quality is ensured by extremely strict verifications carried out as soon as raw materials are received during production and at the end of manufacture
18. eil de suivi de commande et ce partout dans le monde OLDHAM s engage a r pondre dans les plus brefs d lais a toutes questions d ordre technique Qualit OLDHAM s engage a vous assurer une qualit de produits et de services ala hauteur de vos exigences conform ment au cahier des charges de la norme ISO 9001 et ATEX Fiabilit amp Contr les OLDHAM s engage vous fournir un mat riel fiable La qualit de notre production est une condition essentielle cette fiabilit Elle est garantie gr ce des v rifications tr s strictes r alis es d s l arriv e des mati res premi res en cours et en fin de fabrication tout mat riel exp di est configur selon vos besoins Mise en service OLDHAM s engage si vous le d sirez la mise en service de votre mat riel par nos techniciens sp cialis s Un gage de s curit suppl mentaire Formation OLDHAM s engage faire disposer aux utilisateurs de ses produits d un service de formation complet plusieurs ing nieurs p dagogues salle de conf rences mat riels disponibles pour les manipulations mat riel informatique et de visualisation etc d Contrat d entretien OLDHAM s engage vous proposer des contrats d entretien volutifs au regard de vos besoins pour vous garantir une parfaite s curit une ou plusieurs visites par an garantie totale ou partielle renouvelable par tacite reconduction incluant le r glage des centrales de mesur
19. estion please contact our After Sales Service M Miguel RIESGUO oo 33 3 21 60 80 80 OLDHAM DETECTION GAZ MESURE L EMISSION GAS DETECTION STACK GAS MONITORING Usine et si ge social 7 1 Est rue Orfila B P 417 62027 ARRAS Cedex FRANCE Plant and head office 7 1 Est rue Orfila 417 62027 ARRAS Cedex FRANCE AUDACE 03 A 135 600 T l 03 21 60 80 80 Fax 03 21 60 80 00 E mail information oldham fr OLDHAM BELGIUM Belgium 33 03 21 60 81 20 33 03 21 60 81 02 oldham belgium oldham fr OLDHAM DO BRASIL Brasil 55 11 50 34 03 12 55 11 50 34 12 80 oldham brasil uol com br OLDHAM CS Cesk Republica 42 02627 6476 9 42 0222 728296 oldham telecom cz www oldham fr OLDHAM ROMANIA Romania 40 21 222 4846 40 21 222 5037 eduard docolin fx ro T l 33 3 21 60 80 80 Fax 33 3 21 60 80 00 E mail export department oldham fr OLDHAM CH OLDHAM GAS OLDHAM GmbH Switzerland DETECTION Ltd WINTER UK Deutschland amp 41 26 652 51 18 44 0 1782 20 8020 49 231 924 10 lt 41 26 652 51 19 lt 44 0 1782 20 8228 9 49 231 924 125 info oldham ch sales oldham biz info winter gaswarn de
20. king the installation It is checked that at least all connections have been made and that the complete installation complies with current standards in force CAUTION OLDHAM is not responsible for the compliance of the complete electrical safety system The MX48 unit is switched on by means of circuit breakers provided for that purpose and which ensure protection of the mains power unit The circuit breakers are to be selected according to the power consumption levels specified by the manufacturer and the length of the electric cables 3 2 Switching on the unit CAUTION The handling operations and adjustments described in these paragraphs are strictly reserved for authorized personnel as they are liable to affect detection safety To start up the MX48 unit you must swivel the front panel press the ON OFF button located to the bottom left hand side of the FRONT circuit see Figures 3 item A The display panel then shows for example MX 48 52 V1 0 The unit then goes into INITIALIZATION mode for one minute Consequently all the alarms are inhibited and the current outputs are 1 mA for the channels in service The unit then performs self test on its buzzer and all its night emitting diodes At the end of this one minute period the channels in service return to normal operation and the corresponding alarms and relays are enabled 18 The user can carry a manual self test by pressing the tes
21. llel to a maximum of five The end of loop resistor 2 7 K is to be placed at the end of the line on the last detector Connection on MX48 unit see Fig 11 example 1 2 3 5 FLAME detectors 2 3 or 4 connecting wires for shielded cable depending on utilization 10 REMARK The detectors can be supplied with power either via the MX48 unit or by an auxiliary 24 V DC source These detectors can operate in standalone mode 24 V DC power supply and direct utilization of relay contacts in accordance with the technical specification corresponding to the detector used The current commercial designations are as follows model 20 20 U analog type UV 752002 sensitive to UV radiation model 20 20 UC analog type UV sensitive to UV radiation model 20 20 UB uP technology type UV 772002 sensitive to UV radiation model 20 20 UBC uP technology type UV sensitive to UV radiation model 20 20 LC analog type UV IR pyroelectric combination of UV and detectors model 20 20 LBC uP technology type UV IR pyroelectric combination of UV and IR detectors model 20 20 I uP technology triple IR detector 780002 pyroelectric sensitive to IR radiation These detectors are equipped with various 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 B C block
22. oo 3 Other detecto EXAMPLES OF CONNECTION OF DETECTORS WITH Si BARRIERS FIGURE 21 42 Si barrier clipper Type Z787 EX Detector CTX COX100 Explosive atmosphere Terminal block Terminal block 3 wire 4 20 mA detectors other than OLDHAM 2 wire 4 20 mA detectors other than OLDHAM models models 4 20 mA DETECTORS OTHER THAN OLDHAM MODELS Power supplied by MX48 unit FIGURE 22 43 3 Detector TOX 1 Detector TOX 2 EXAMPLE OF PARALLEL WIRING OF 2 DETECTORS OF CTX50 5 maximum FIGURE 23 44 230 VAC Solenoid valve EXAMPLE OF CONNECTION OF EXTERNAL DEVICES TO THE ALARM 1 AN 2 RELAY CONTACTS OF A MX48 MEASURING CHANNEL FIGURE 24 45 OLDHAM engage OLDHAM undertakes Parce la s curit des hommes et la protection de l environnement sont notre priorit OLDHAM s engage et d finit ses normes qualit Because safety for personneland protection of the environment are our priorities OLDHAM gives the following undertakings and defines its quality standards Les Plus OLDHAM s engage au travers de son personnel qualifi rapidement et efficacement a vos besoins de cons
23. re 12 Remark Star connected power circuit Signal circuit in series loop R1 only on the last detector 3 maxi EXAMPLE OF UTILIZATION OF FLAME DETECTORS EQUIPPED WITH EITHER CONNECTOR A OR B AND SUPPLIED WITH AUXILIARY DC POWER FIGURE 17 39 Local box including power unit transfer terminal block outside classified areas MX48 terminal block Galvanic isolator see figure 12 Detector terminal block Type Cable 2xn shielded ble 2xn shielded 250 max in loop 17 in loop between between 1 and 2 MX48 1 and 2 detec or Channel MX Channel MX Channel MX Local box with PWR unit and signal transfer terminal block a single detector per MX48 measuring channel the detector rely can be used in local mode The galvanic isolator is located in the immediate vicinity of the MX48 unit EXAMPLE OF UTILIZATION OF AN INTERCONNECTION BOX AND GALVANIC ISOLATOR FIGURE 18 40 Ventostat VT terminal block MX48 terminal block see figure 12 Buttons Please do not touch CONNECTION 2 DETECTOR VENTOSTAT FIGURE 20 41 Other detector Detector CTX COX100 Si barrier clipper Type MTL787S Explosive atmosphere V me Serre ooooooo
24. sic safety detectors CTX100 COX100 Two types of intrinsic safety barrier be used Z787 EX and MTL787S PRECAUTIONS Before connecting the barrier to the unit check that the voltage is lt 25 V DC short circuit in the electrical connections will result in destruction of the barrier Perform wiring in the DE ENERGIZED state The electrical link between the MX48 unit and the clipper is made using a screened cable with two active conductors with a maximum resistance of 12 ohms each 12 In classified areas the installation must comply with standards force Connections on MX48 unit see Fig 21 IMPORTANT All intrinsic safety installations must be APPROVED as a whole assembly by an approved organization DRIRE etc OLDHAM INTRINSIC SAFETY BARRIERS Type of IS Reference Specific features OLDHAM box barrier reference 7787 EX 6184703 To be fitted on DIN RAIL MTL787S 6797100 To be fitted in an For 2 clippers 6797192 approved box MANDATORY For 5 clippers 6797547 For 12 clippers 6797101 2 3 8 Other detectors with standardized current output Any detector 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 MX48 unit The connection requirements are identical to those for the corresponding OLDHAM detectors see Fig 22
25. t key at any time see Fig 26 This self test lasts 20 seconds and the display panel may show the following displays one after the other for example Line corresponding to MX 48 52 V1 0 the channel displayed LEL when the ENTER key was pressed then SELF TEST xx LEL CH4 The user can interrupt the self test cycle before it is completed by pressing the ACKNOWLEDGEMENT key of the front panel keypad 3 3 Operating modes 3 3 1 Audio warning device buzzer In normal operation the audio warning device is triggered whenever a fault or an alarm appears The audio warning device can be stopped by pressing the ACKNOWLEDGEMENT key or by remote acknowledgement The buzzer makes a continuous or discontinuous sound according to the programming of the unit if an alarm threshold is exceeded 3 3 2 Light emitting diodes LED Fig 1 and fig 4 Each channel is equipped with five LEDs visible and identified on the FRONT panel Extinguished Illuminated Flashing in steady mode Channel not in Channel in service Threshold ALI exceeded service manual clearing and not acknowledged Ist red ALI not triggered Threshold ALI exceeded Threshold AL2 exceeded automatic clearing manual clearing and not acknowledged 2ndred AL2 not triggered Threshold AL2 exceeded automatic clearing 3rd red AL3 not triggered Threshold AL3 exceeded by mean or time automatic clearing Yello
26. th installation ac sa eR de an 18 3 2 Switching on the een Sp nam ten 18 3 3 Operating MOS LA ARES do cL env b E OR DA 19 3 3 1 Audio warning device buzzer ses 19 3 32 Light emitting diodes LED Fig 1 and fig 4 19 2 22 Alarm thresholds ca AS 20 3 3 4 Measuring unik n dekdet 20 5558 eases 21 4 1 List and functions of the various items of USER equipment for programming calibration of th HORE S cese edant tu uf icd usse 21 4 1 1 EEE 21 4 1 2 Maintenance Ee ys ade eive ti 22 VIEWS SPECIFIED IN THE MANUAL 4 cesse eene een etta setas etna stas sete 24 1 DESCRIPTION 1 1 the wall mounted box The housing of the MX48 is a wall mounted box consisting of a back casin and a cover which can be pivoted Dimensions Fig 1 end of this manual Overall view casing open Fig 2 1 2 The various printed circuit boards Overall view Fig 2 Power supply board Fig 3 Chap 5 e Measuring channel board Fig 7 Chap 5 e Front link board Fig 4 Chap 5 Comprising the display the micro part DB9 RS223 and 5485 connector and the keypads FIGURE 2 COMPLETE SET OF BOARDS 1 4 turn latches
27. w No fault Fault on channel Channel being calibrated or programmed Detector being calibrated 19 3 3 3 Alarm thresholds Each of the three alarm thresholds can be programmed independently for each channel See the Channel programming menu In normal operation gas alarm is only triggered after preprogrammed time delay in order to avoid spurious alarms Alarm thresholds be processed the following manners in normal cycle with manual clearing in normal cycle with automatic clearing in parking cycle The alarm thresholds are to be selected according to the gases detected and the corresponding standards in force Special case A channel connected to a fire detector Itis MANDATORY to select the scale with 100 divisions Itis MANDATORY to select the alarm threshold with 60 divisions Owing to the end of loop resistor of 2 7 the fire detector outputs 4 mA when no fire is detected and 20 mA if a fire is detected 3 3 4 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 Channel 1 x x LEL CH4 OR Channel 2 x x x ppm CO 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
28. which is the property of OLDHAM SA These information shall not be in part or in whole physically electronically or in any other form whatsoever reproduced copied divulged translated used as a basis for the manufacture or sale of OLDHAM SA equipment or used for any other reason without the prior approval of OLDHAM SA WARNINGS This document is not a contractually binding document OLDHAM SA reserves the right to make any changes without notice to the technical characteristics of its equipment in order to improve performance levels in the interest of its customers CAREFULLY READ THE INSTRUCTIONS BEFORE ALL FIRST USE This instruction manual must be read by any person who is or will be responsible for the use maintenance or repair of this equipment This equipment will conform with the specified performance levels only if it is used maintained and repaired in accordance with the directives of OLDHAM SA and by OLDHAM SA personnel or personnel authorized by OLDHAM SA 1 5 CONTENTS DESCRIPTION ennemie tuent ON I PEN VISIT UE 6 Td dhe wall mounted 6 1 2 The various printed circuit DOGS aui tione tale lies 6 INSTALLATION AND CONNECTIONS e ecce eee 7 2 1 Installation TecomnmendaiiOWs oed e messes SAR Ne 7 2 2 Electrical connections of the MX48 Unit Fig 6
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