Rockwell Automation 1756-xxxx ControlLogix Chassis and Power Supplies Installation Instructions - Manual (Page 54)

54 Rockwell Automation Publication 1756-IN005C-EN-P - March 2014
Chapter 2 Install Chassis and Redundant Power Supplies
Troubleshoot the Redundant
Power Supplies The redundant power supplies have a green status indicator for power and an
amber status indicator for non-redundancy.
The following table describes how to use the status indicators to troubleshoot
your redundant power supplies.
Chassis Adapter Status Indicator
The chassis adapter has a green power status indicator. When the status indicator
is solid green, the chassis is receiving power from the redundant power supplies. If
the indicator is off, the chassis is not receiving power from the redundant power
supplies. See the table above to troubleshoot the redundant power supplies.
Power
Non-red
45843
Power Indicator Non-red Indicator Description Take This Action
Solid green Off Both power supplies are operating properly. None
Solid green Solid amber This power supply is operating properly, but is the only
power supply providing power to the chassis adapter. Check the other power supply.
Off Solid amber All possible connections are made, but the power supply is
turned off. Turn the power supply ON. If the power supply does not turn ON, follow
these steps.
1. Remove the input power from the power supply
2. Wait 30 seconds
3. Reconnect the input power
4. Turn the power supply ON.
If the power supply still does not turn ON, it can need to be replaced.
Off Off Any of the following conditions can apply: Take the corresponding action:
The supply is turned OFF. Turn the power supply ON.
Line voltage is not within the specified range. Verify that line power is in the specified range. If the indicators
remain OFF, cycle power.
All connections are made, but input power is not
supplied. Verify that input power is supplied and turn the power supply ON.
All connections are made, including input power, but the
output cable (1756-CPR2) is not connected. Connect the output cable and turn the power supply ON.
The power supply is ON but defective. The power supply can need to be replaced.