Troubleshoot the power supply – Rockwell Automation 1756-xxxx ControlLogix Chassis and Power Supplies Installation Instructions User Manual
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Rockwell Automation Publication 1756-IN005C-EN-P - March 2014
Chapter 1
Install Chassis and Power Supplies
Troubleshoot the
Power Supply
All ControlLogix power supplies have a green status indicator that remains ON
during normal operation.
If the indicator turns OFF during operation, take these steps to troubleshoot the
power supply.
1. Verify that the line voltage is within the specified range.
2. If the indicator remains OFF, turn off the power.
3. Loosen the screws holding the power supply to the chassis.
for the location of the screws on the power supply.
4. Slide the power supply out so that the rear connector is disconnected.
5. Turn on the power.
6. Follow these steps if the indicator does the following:
• Turns ON:
a. Verify that the Backplane Power Load of the system is within the
output rating of the power supply.
b. Turn off the power.
c. Reinstall the power supply in the chassis.
d. Turn on the power.
• Remains OFF:
Contact your local Allen-Bradley distributor.
Status Indicator
45810