Appendix A: Typical Wiring Connections For Specific Applications - Eaton MTL7700 Instruction Manual

APPENDIX A: TYPICAL WIRING CONNECTIONS
FOR SPECIFIC APPLICATIONS .
Hazardous Safe
Area Area
3
4
Figure A1: 2-wire transmitters
Hazardous Safe
Area Area
3
MTL7788R+
4
Figure A2: 2-wire transmitters with 250Ω conditioning
Hazardous Safe
Area Area
Compensating cable
3
MTL7760ac
4
MTL7765ac
MTL7778ac
Figure A3: Thermocouple/mV input
Hazardous Safe
Area Area
3
4
MTL7787+
MTL7787P+
Figure A4: 2-wire transmitter/switch input
INM 7700 Rev 12
Power Bus
Power +26V
1
Signal
2
MTL7706+
MTL7787+
1-5V
MTL7787P+
4 -20mA 250W
MTL7788+
Power Bus
Power +26V
1
2
1-5V
250Ω
1
Recorder
Controller
2
Data logger
Computer
Power Bus
Power +26.6V
1
Signal
2
Hazardous Safe
Area Area
3
4
7
8
Figure A5: 2-channel switch inputs
Hazardous Safe
Area Area
3
4
3
4
7
Figure A6: Low-level analogue inputs (RTD's)
Hazardous Safe
Area Area
3
4
7
8
Figure A7: 2-channel switch/proximity input
Hazardous Safe
Area Area
3
4
Figure A8: Single channel switch/proximity input
17
Power Bus
1
Power +26.6V
Logic signal
2
Power +26.6V
MTL7789+ 5
6
Logic signal
1
2
MTL7755ac
Receiver
1
2
MTL7756ac
5
Receiver
Power
1
2 Logic signal
MTL7743
MTL7744 5
6 Logic signal
Power Bus
+20V - 35V
1
2
0V
MTL7742
5
Logic signal
6
Logic signal