Rockwell Automation 1492-CM800-LD001 Field Wire Conv. Module for Modicon B802-008 to 1756-OA8 User Manual
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IV. Conversion Module Wiring Diagram
The following diagram shows the connections from the existing B802-008 swing-arm, through the conversion module, 1492
cable and to the 1756-OA8 output module. The diagram can be used as an aid in possible system troubleshooting.
2
L1-0
OUT-0
3
OUT-1
5
OUT-2
7
OUT-3
9
OUT-4
4
OUT-5
6
OUT-6
8
OUT-7
10
12
14
16
18
11
13
15
17
Black
White
Red
Green
Orange
Blue
White/Black
Red/Black
Green/Black
Orange/Black
Blue/Black
Black/White
Red/White
Green/White
Blue/White
Black/Red
White/Red
Orange/Red
Blue/Red
1
1
2
2
3
7
4
8
5
6
7
4
8
9
10
10
11
12
14
13
20
11
15
12
16
17
17
18
18
19
20
14
Red/Green
Not Used
19
Output 1
Output 3
Output 2
Output 4
1
Not Used
20
L1-1
LOAD
L1
L2
L1-0
L1-0
L1-0
L1-0
L1-1
L1-1
L1-1
L1-1
Hot Grp 1
Hot Grp 2
Hot Grp 3
Hot Grp 4
Output 5
Output 7
Output 6
Output 8
3
Neutral Grp 1
9
Neutral Grp 2
13
Neutral Grp 3
19
Neutral Grp 4
5
Not Used
6
15
16
Not Used
Not Used
Not Used
10000021848
(Version 00)
Conversion Module Installation and Application Considerations
The B802-008 module output current limits versus 1756-OA8 limits are as follows:
B802-008
1756-OA8 w/ 1492-CABLE003U
a) Current/Point
2A
2A
b) Current/Module
12A
5A @ 30˚C, 4A @ 60˚C
c) Surge Current/Pt 50A for 1 cycle
20A for 43ms
1756-OA8
1492-CABLE003U
1492-CM800-LD001
Conversion: B802-008 to 1756-OA8 with 1492-CM800-LD001
B802-008 Swing Arm
The B802-008 has 4 groups (allowing 4 separate power supplies) and the 1756-OA8 has 2 groups. This module/cable
combination ties Groups 1 & 2 from the B802-008 to Group 0 on the 1756-OA8 and it ties Groups 3 & 4 from the B802-008 to
Group 1 on the 1756-OA8. Field wiring modification must be made to accommodate this if multiple supplies were used. If 4
supplies were used, 2 must be removed.
The B802-008 provided a single fuse per group. The 1756-OA8 is NOT fused. The 1492-CM800-LD001 provides a
5x20mm fuse per 1756-OA8 Group. Fuse rating for this configuration 4 Amps.
The 1492-CABLE003U current is limited to 2A per pin.
Refer to your B802-008 and 1756-OA8 Installation Manual wiring schematics and diagrams for more details. Ensure 1756
output module ratings are not exceeded.
[Reference Doc: 41170-750 (Version 03)]
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. In addition, refer to the current draw requirements of the existing
loads for this configuration to ensure they are within the current ratings of the 1756 output module.
WARNING