Rockwell Automation 1492-CM1771-LA003 Analog & Digital I/O Conversion Module - Manual (Page 5)

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V. Wiring Diagrams (Cont’d)
There are several key application considerations and system specifications (bottom of drawing) when
using these components (conversion module, cable and input module). Read and understand these
considerations before installation.
WARNING
1771-WC Swing Arm
From 1771-OFE2
Conversion Module
1492-CM1771-LA003
Cable
1492-CONACAB005E 1756-OF6CI
Conversion: 1771-OFE2 to 1756-OF6CI
Conversion Module Installation and Application Considerations
This Bul. 1492 cable consists of a cable wired to one 1756-OF6CI RTB. Recommended cable lengths of 0.5M or 1.0M (005=0.5M, 010=1.0M).
See table 2 for other lengths.
SHIELD GROUNDING: In some installations, the field wiring shield was grounded on the 1771 chassis. If this was the case, the installer must
remove these shield connections from the 1771 chassis and they can be connected to the grounding stud on the 1492-CM1771-LA003 module.
The pre-wired cable used between the 1492-CM1771-LA003 module and the 1756-OF6CI [1492-CONACAB005E] provides a shield ground lug to
ground the shield at the 1756 ControlLogix chassis, this must be connected. Do NOT connect this ground lug to the conversion module grounding
stud.
IMPORTANT: The 1771-OFE2 module required the use of an external power supply to drive the analog device. The
1756-OF6CI analog output provides the drive power to the analog device. ENSURE the external power supply is REMOVED from the current loop
before applying power to the 1756-OF6CI module or the analog output module may be damaged.
The 1771-OFE2 analog output ranges were factory set, the output range for the 1756-OF6CI is software configured. Please ensure the correct
output range is configured in the 1756-OF6CI.
The 1756-OF6CI module can drive a load up to 550 ohms with the standard pre-configured cable [1492-CONACAB005E].
If greater than a 550 ohm drive current is required, the pre-wired cable can be modified at the 1756-OF6CI terminal block to drive up to a 1000
ohms. Refer to the 1756-OF6CI Installation Manual for modification details.
Refer to your 1771-OFE2 and 1756-OF6CI Installation and User Manuals for additional information concerning comparisons of module wiring,
features and configuration details. [Reference Doc: 41170-948 (Version 02)]
PN-114289
DIR 10000060100 (Version 01)
Publication 1492-IN047B-EN-E
Current
Load
13
25
24
23
22
21
19
18
17
16
1
2
SH
Channel 1 Out +
Not Used
1
OUT-0
RTN-0
5
OUT-1
2
RTN-1
6
OUT-2
7
RTN-2
11
OUT-3
8
RTN-3
12
RTN-4
19
OUT-4
15
Not Used
14
13
Red/White
Green/Black/White
Black/White/Red
White/Black/Red
Orange/Green
Red/Black/White
Orange/Red
Not Used
Not Used
Not Used
20
16
Blue/Red
+
- A
3
4
5
6
7
B
0
1
2
Not Used
Channel 1 Out -
Channel 2 Out +
Channel 2 Out -
Channel 3 Out +
Channel 3 Out -
Channel 4 Out +
Channel 4 Out -
3
4
5
6
7
8
9
10
11
12
14
15
20