6.4 Analogue Input modules .................................................................41
6.4.1 MTL4541/MTL4541S/MTL4541Y - Repeater Power Supply ......................................41
6.4.2 MTL4541A/MTL4541AS/MTL4541YA - Current Repeater .......................................42
6.4.3 MTL4541B/MTL4541P/MTL4541T - Repeater Power Supply .....................................43
6.4.4 MTL4544/MTL4544S - Repeater Power Supply ...............................................44
6.4.5 MTL4544A/MTL4544AS - Current Repeater ..................................................45
6.4.6 MTL4544B - Repeater Power Supply ........................................................46
6.4.7 MTL4544D - Repeater Power Supply ........................................................47
6.5 Analogue Output modules ...............................................................48
6.5.1 MTL4545Y/MTL4546/MTL4546C/MTL4546S/MTL4546Y - Isolating Driver ..........................48
6.5.2 MTL4549/MTL4549C/MTL4549Y - Isolating Driver .............................................49
6.6 Fire and Smoke Interface modules .........................................................50
6.6.1 MTL4561 - Fire and Smoke Detector Interface ................................................50
6.7 Temperature Input module ...............................................................51
6.7.1 MTL4573 - Temperature Converter ..........................................................52
6.7.2 MTL4575 - Temperature Converter ..........................................................53
6.7.3 MTL4576-RTD - Temperature Converter .....................................................54
6.7.4 MTL4576-THC - Temperature Converter .....................................................55
6.7.5 MTL4581 - mV/Thermocouple Isolator ......................................................56
6.8 General modules .......................................................................57
6.8.1 MTL4599 - Dummy Isolator ...............................................................57
6.8.2 MTL4599N - General purpose feedthrough module ...........................................57
6.9 PCS45/PCL45USB configurator for MTL temperature converters ................................58
7 FAULT FINDING AND ROUTINE MAINTENANCE ...........................................59
7.1 Maintenance precautions ................................................................59
7.2 Fault finding ...........................................................................59
7.3 Routine maintenance ....................................................................59
8 BENCH TESTING MODULES ...........................................................61
8.1 Digital Input (DI) modules ................................................................61
8.2 Digital Output (DO) modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
8.3 Analogue Input (AI) Modules .............................................................63
8.4 Analogue Output (AO) Modules ...........................................................65
8.5 Testing the functioning of other modules ...................................................65
9 APPLICATIONS INVOLVING ZONE 2 AND/OR ZONE 22 HAZARDOUS AREAS ..................66
9.1 Enclosure ..............................................................................66
10 APPENDIX ..........................................................................67
10.1 Table A - Safety descriptions ..............................................................67
10.2 Table B - Maximum cable parameters - IIC gas group .........................................67
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