Rockwell Automation 1492-CM800-LD006 Fused Field Wire Conversion Module for Modicon B820-008 to 1756-OC8 - Manual (Page 4)

(4) 10000021873 (Version 00)
V. Fuse Installation and Replacement
The 1492-CM800-LD006 conversion module has two mechanical fuse holders with fuses located on the circuit board
inside the modules plastic case. The following explains how to replace the fuses:
1) Remove the Screw from the bottom of the conversion module.
2) Push UP and IN on the locking tab at the other end of the conversion module.
3) Remove the top cover (part which has the nameplate label) from the module.
 The B820-008 has 4 groups (allowing 4 separate power supplies) and the 1756-OC8 has 2 groups. This module/cable
combination ties Groups 1 & 2 from the B820-008 to Group 0 on the 1756-OC8 and it ties Groups 3 & 4 from the B820-008
to Group 1 on the 1756-OC8. Field wiring modification must be made to accommodate this if multiple supplies were used.
If 4 supplies were used, 2 must be removed.
 The B820-008 provided a single fuse per group. The 1756-OC8 is NOT fused. The 1492-CM800-LD006 provides a
5x20mm fuse per 1756-OC8 Group. Fuse rating for this configuration is 4 Amps.

The 1492-CABLE003U current is limited to 2A per pin.
 Refer to your B820-008 and 1756-OC8 Installation Manual wiring schematics and diagrams. Ensure 1756 output
module ratings are not exceeded. [Reference Doc: 41170-768 (Version 03)]
Locking Tab
IN
UP