Rockwell Automation 1492-CM800-LA001 Field Wire Conv. Module for Modicon B875-111 to 1756-IF16 - Manual (Page 3)

(3) 10000021823 (Version 00)
IV. Conversion Module Wiring Diagram (Continued)
Conversion: B875-111 to 1756-IF16 (Differential Voltage) with 1492-CM800-LA001
1756-IF16
1492-ACABLE003UC
1492-CM800-LA001
B875-111 Swing Arm
Conversion Module Installation and Application Considerations
 The B875-111 indicated differential inputs. When it was configured for single ended inputs, it was referred to as a B877-111.
 SHIELD GROUNDING: For differential current analog inputs the B875-111 recommended grounding the field wiring shield at the B875-111 module. The
1492 conversion module accounts for this shield ground connection. The pre-wired cable used between the 1492-CM800-LA001 and the 1756-IF16 [1492-
ACABLE003UD] provides a shield ground lug to ground the shield at the 1756 ControlLogix chassis, this must be connected.
 The B875-111 recommended placing jumpers from UNUSED to USED analog input channels. These jumpers MUST be removed or they will result in
improper operation.

The B75-111 analog input ranges were configured by DIP switches on the module. The appropriate range for the 1756-IF16 is configured by software.
 This design assumes that all inputs on the B875-111 were connected to current transmitters. If there was a mix of current and voltage transmitters,
then modification of the pre-wired cable [1492-ACABLE003UD] will need to occur at the 1756-IF16 terminal block. Refer to the 1756-IF16 Installation
Manual for modification details.

CASE GROUND: If connected, remove this wire from the B875-111 terminal block, as it serves no purpose for the 1756-IF16.
 Refer to your B875-111 and 1756-IF16 Installation and User Manuals for additional information concerning comparisons of module wiring, features, and
configuration details. [Reference Doc: 41170-766 (Version 03)]
3
7
8
11
12
15
16
5
9
13
17
25
29
Input 4+
Input 4-
Input 2+
Input 3+
Input 2-
Input 3-
2
IN-0
IN-1
4
IN-2
6
IN-3
8
IN-4
12
IN-5
14
IN-6
16
IN-7
18
RTN
10
IN-9
22
IN-8
20
IN-11
26
IN-10
24
IN-15
36
IN-14
34
Red 3
2
1
14
15
16
17
18
4
6
8
10
19
12
13
25
24
23
22
20
21
Black
White
Black
Green
Black
Blue
Black
Red
Green
IN-13
32
IN-12
30
Yellow
Black
Brown
Black
Orange
Black
Red
White
+
-
4
Input 1+
Input 1-
2 Current Input 1
6 Current Input 2
10 Current Input 3
14 Current Input 4
23
27
28
31
32
35
36 Input 8+
Input 8-
Input 6+
Input 7+
Input 6-
Input 7-
24
Input 5+
Input 5-
22 Current Input 5
26 Current Input 6
30 Current Input 7
34 Current Input 8
SH
2
33
37
Shield 8
Shield 7
Shield 6
Shield 5
Shield 4
Shield 3
Shield 2
Shield 1
1
40
18
19
20
21
38
39
Voltage Reference -
Voltage Reference +
Not Used
Not Used
Not Used
Not Used
Case Ground
Case Ground
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
1492-CM800-LA001 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