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Rockwell Automation Publication 2100-IN012G-EN-P - August 2016
Chapter 4
Installing and Removing Plug-in Units
Install Fixed-mount 24V DC
Two-branch Redundant
Power Unit
For IntelliCENTER® EtherNet/IP MCCs with 24V DC redundancy, one
option is to include the 24V DC two-branch redundant unit. To install or
remove the 24V DC two-branch redundant unit, follow these steps.
1. To install the unit support pan, follow the instructions in the
CENTERLINE 2100 Motor Control Centers (MCC) Units with
Vertical Operating Handles Installation Instructions,
publication
The redundant power unit requires 0.5 space factor and three bolt
locations, as shown.
2. Place the unit into the open space and secure the unit on the right side
with two 10-32 self-tapping screw and tighten to 32 lb•in (3.6 N•m) by
using a 5/16 in. socket wrench.
3. Secure the unit on the left side with one 1/4-20 self-tapping screw and
tighten to 55 lb•in (6.2 N•m) by using a 3/8 in. socket wrench.
To enable redundant operation, we recommend that you use the existing
Ethernet power-supply unit within the MCC as one input to the
redundant unit, and then bring in a second input from a source external
to the MCC.