Wire the 1756-if8i module – Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules User Manual
Page 61
Rockwell Automation Publication 1756-UM540A-EN-P - May 2014
61
1756-IF8I Isolated Analog Input Module
Chapter 3
Wire the 1756-IF8I Module
This section shows how to wire the 1756-IF8I module for current and voltage
input types.
Figure 9 - 1756-IF8I Module Wiring Diagram -Current Mode with External Loop Power
IMPORTANT
In this wiring diagram, an external, user-provided power supply provides
24V DC loop power.
+
–
A
A
i
A
A
i
1
3
5
7
0
1
9
11
12
4
1
3
1
6
1
5
1
8
1
7
1
0
2
9
1
2
2
1
2
4
2
3
2
6
2
5
2
8
2
7
2
0
3
9
2
2
3
1
3
33
6
3
5
3
2
34
8
6
4
+
–
IN_0/V
IN_0/I/SRC
RTN_0
Not used
IN_2/V
IN_2/I/SRC
RTN_2
Not used
4-wire
Transmitter
Shield Ground
IN_4/V
IN_4/I/SRC
RTN_4
Not used
IN_6/V
IN_6/I/SRC
RTN_6
Not used
Not used
Not used
IN_1/V
IN_1/I/SRC
RTN_1
Not used
IN_3/V
IN_3/I/SRC
RTN_3
Not used
IN_5/V
IN_5/I/SRC
RTN_5
Not used
IN_7/V
IN_7/I/SRC
RTN_7
Not used
Not used
Not used
24V DC
IMPORTANT: Remember the following:
• If separate power sources are used, do
not exceed the specific isolation
voltage. For more information on
module specifications, see the 1756
ControlLogix I/O Specifications
Technical Data, publication
• Place additional loop devices, for
example, strip chart recorders, at either
‘A’ location in the current loop.
24V DC
2-wire
Transmitter
Shield Ground
+
–
+
–