Rockwell Automation 1756-xxxx ControlLogix Chassis and Power Supplies Installation Instructions - Manual (Page 43)

Rockwell Automation Publication 1756-IN005C-EN-P - March 2014 43
Install Chassis and Redundant Power Supplies Chapter 2
5. Leaving the far-left bottom tab open for functional ground, install the
remaining tab screws.
6. Align the 1756-PSCA2 adapter’s circuit board with the card guides on the
left side of the chassis and slide the adapter back until it is flush with the
front of the chassis.
WARNING: If you connect or disconnect the 1756-CPR2 cables while
either backplane power source is on, an electrical arc can occur. This
could cause an explosion in hazardous location installations. Repeated
electrical arcing causes excessive wear to contacts on both the module
and its mating connector. Worn contacts may create electrical
resistance that can affect module operation.
Be sure that power is removed or the area is nonhazardous before
proceeding.
20290-M
Leave the far-
left bottom
tab open.
Card Guide
45835