Rockwell Automation 1756-xxxx ControlLogix Chassis and Power Supplies Installation Instructions - Manual (Page 49)

Rockwell Automation Publication 1756-IN005C-EN-P - March 2014 49
Install Chassis and Redundant Power Supplies Chapter 2
Connect the Power Use the information in the following sections to connect the power.
Connect the 1756-CPR2 Cable
Use the 1756-CPR2 cable to connect your redundant power supply to the
1756-PSCA2 chassis adapter.
1. Connect the male end of the 1756-CPR2 cable to the 1756-PSCA2
chassis adapter.
2. Connect the female end of the 1756-CPR2 cable to the redundant
power supply.
3. Tighten the screws to hold the cable in place.
Make sure you tighten the screws all the way to hold the cable in place for
the life of the product.
4. Repeat these steps with the second redundant power supply.
Connect Power to the Redundant Power Supply
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.
WARNING: If you connect or disconnect wiring while the field-side power is on,
an electrical arc can occur. This can cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous before
proceeding.
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