Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD/mV Input Module User Manual User 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