Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD/mV Input Module User Manual - Manual (Page 36)

Publication 1797-6.5.2 - February 2001
3-12 How to Install Your FLEX Ex Thermocouple/RTD/mV Module
Type of Input
Connect the following:
+ H L -
Shield 1
RTD - 2-wire 1 2
RTD - 3-wire 1 3 2
RTD - 4-wire 1 1a 2a 2
Thermocouple 1 2
Millivolt 1 2
1Terminals 16, 33, 40 thru 45 are chassis ground.
RTD or
Thermocouple
Channel
RTD Source
Current
(+)
High Signal
Terminal (H)
Low Signal
Terminal (L)
Signal
Return
(-)
0 0 1 2 3
1 4 5 6 7
2 8 9 10 11
3 12 13 14 15
4 17 18 19 20
5 21 22 23 24
6 25 26 27 28
7 29 30 31 32
+V Terminals 34 and 50
-V Terminals 35 and 51
1 Terminals 37, 38 and 39 and 46, 47 and 48 are for cold junction
compensation (with 38 and 47 chassis ground). Connect CJC1 to
terminal 5 or 21, CJC2 to terminal 12 or 29
2 Terminals 16, 33, and 40 thru 45 are chassis ground.
1
2
3
1a
2a
1
2
1
2
1
2
1
2
2-wire RTD
3-wire RTD
4-wire RTD
Thermocouple
Millivolt