Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules - Manual (Page 74)

74 Publication 1756-UM0009C-EN-P - December 2010
Chapter 4 Non-isolated Analog Voltage/Current Input Modules (1756-IF16, 1756-IF8)
Wire the 1756-IF8 Module Current and voltage wiring examples for the 1756-IF8 module are shown on
the following pages.
1756-IF8 Differential Current Wiring Example - 4 channels.
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
IN-0
Not used
IN-1
Not used
IN-2
Not used
IN-5
IN-3
IN-6
RTN
IN-7
IN-4
Not used
Not used
Not used
Not used
RTN
i RTN-0
i RTN-7
i RTN-4
i RTN-6
Not used
Not used
Not used
Not used
RTN
Not used
Not used
RTN
i RTN-5
i RTN-1
i RTN-2
i RTN-3
Not used
Not used
Not used
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
IN-0
Not used
IN-1
Not used
IN-2
Not used
IN-5
IN-3
IN-6
RTN
IN-7
IN-4
Not used
Not used
Not used
Not used
RTN
i RTN-0
i RTN-7
i RTN-4
i RTN-6
Not used
Not used
Not used
Not used
RTN
Not used
Not used
RTN
i RTN-5
i RTN-1
i RTN-2
i RTN-3
Not used
Not used
Not used
+
-
Shield Ground
Channel 0
Channel 3
Jumper Wires
i
i
A
2-Wire
Transmitter
A
NOTES:
1. Use the table when wiring your module in differential mode
2. All terminals marked RTN are connected internally.
3. A 249
Ω
current loop resistor is located between IN-x and i RTN-x terminals.
4. If multiple (+) or multiple (-) terminals are tied together, connect that tie point to a RTN terminal to
maintain the module’s accuracy.
5. Place additional loop devices (strip chart recorders, so forth) at the A location in the current loop.
6. Do not connect more than two wires to any single terminal.
IMPORTANT: When operating in two channel, high-speed mode, only use channels 0 and 2.
Channel Terminals
Channel 0 IN-0 (+), IN-1 (-) & i RTN-0
Channel 1 IN-2 (+), IN-3 (-) & i RTN-2
Channel 2 IN-4 (+), IN-5 (-) & i RTN-4
Channel 3 IN-6 (+), IN-7 (-) & i RTN-6
40912-M
User-provided
Loop Power