Rockwell Automation 1492-CM800-LA004 User Manual
Field Wire Conversion Module for Modicon B872-200 Analog Voltage Output
to 1756-OF6VI Analog Voltage Output
(Cat 1492-CM800-LA004)
10000021843 (Version 00)
Printed in Germany
Local language (French, Italian, German & Spanish) versions of this document can be downloaded by going to www.ab.com.
In the left margin click on Publications Library and Literature Library. In the Search Area (right margin), Search by Catalog
Number and in the Search box type in the catalog number of the conversion system component.
I. Module Description
The 1492-CM800-LA004 conversion module provides field wire signal conversion from a Modicon® B872-200,
analog, 4-channel, individually isolated voltage output module to a ControLogix 1756-OF6VI, analog, 6-channel,
individually isolated voltage output module. The conversion module provides the mating connections to the B872-200
swing-arm (terminal block) with the attached field wires. It routes those signals, via its 25-pin, D-shell connector and
a 1492-ACABLEY pre-wired cable to the compatible terminals of the 1756-OF6VI (refer to the Wiring Diagram on
page 2).
II. Module Installation
The 1492-CM800-LA004 conversion module must be installed in a 1492 conversion base-plate and cover-plate assembly. The installation of the module into the assembly is explained in the Installation Manual that ships with the conversion
assembly. For a list of compatible assemblies refer to Appendix A.
III. Conversion Module Compatibility Matrix
This is the cable length in meters and tenths of meters (e.g. 015 = 1.5 meters). Recommended cable
length is 003 (00.3 meters).
25pin D-shell connector for 1492-ACABLEY
Mating connector for
B800 Terminal Block
Conversion Module Compatible 800
Output Module
Compatible 1756
Output Module
Required 1492 Cable
1492-CM800-LA004 B872-200 voltage output 1756-OF6VI voltage output 1492-ACABLEY
1492-CM800-LA004 Conversion Module
De-energize and lockout any and all power to all I/O field devices connected to the Modicon 800 I/O
housing, and the power to the 800 I/O housing itself. Ensure all power is de-energized and locked out
to any device in the control cabinet where the conversion is to be performed. Ensure work is performed
by qualified personnel.
WARNING
(2)
10000021843 (Version 00)
1756-OF6VI
1492-ACABLE003Y
1492-CM800-LA004
Conversion: B872-200 to 1756-OF6VI with 1492-CM800-LA004
B872-200 Swing Arm
Conversion Module Installation and Application Considerations
SHIELD GROUNDING: The B872-200 analog output module allowed shield grounding at the field device or to the B872-200 “Frame
Ground” terminal or to the Analog Common. If the shield was previously connected to the Analog Common terminal, it is required that the
shield be removed and reconnected to the Frame Ground terminal. The pre-wired cable used between the 1492-CM800-LA004 and the
1756-OF6VI [1492-ACABLE003Y] provides a shield ground lug to ground the shield at the 1756 ControlLogix chassis, this must be
connected.
Refer to your B872-200 and 1756-OF6VI Installation and User Manuals for additional information concerning comparisons of module
wiring, features, and module configuration details. [Reference Doc: 41170-784 (Version 03)]
IV. Conversion Module Wiring Diagram
The following diagram shows the connections from the existing B872-100 swing-arm, through the conversion module, 1492
cable and to the 1756-OF6CI analog output module. The diagram can be used as an aid in possible system troubleshooting.
There are several key application considerations and system specifications (bottom of drawing) when
using these components (conversion module, cable and output module). Read and understand these
considerations before installation.
WARNING
6
14
12
26
24
34
32
20
21
22
23
27
28
+
-
4
Analog Output 1
Analog Common 1
5
13
25
3
9
10
15
16
18
19
7
33
8
11
17
29
30
31
35
36
37
38
1
2
39
Not Used
Not Used
Frame Ground
Frame Ground
Analog Common 1
13
25
24
23
22
21
19
18
17
16
15
14
SH
12
11
9
6
4
2
20
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
Not Used
10
Red
Black
White
Black
Green
Black
Blue
Black
RTN-5
20
OUT-5
16
Yellow
Black
Brown
Black
Orange
Black
Analog Output 2
Analog Common 2
Analog Common 2
Analog Output 3
Analog Common 3
Analog Common 3
Analog Output 4
Analog Common 4
Analog Common 4
40
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Frame Ground
Frame Ground
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