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14
ControlLogix Power Supplies
Troubleshooting the Power Supply
ControlLogix power supplies have a green LED status indicator that remains ON
during normal operation.
Figure 11
LED status indicator
If the indicator turns OFF during operation, follow these steps:
1. Verify that the line voltage is within the specified range.
2. If the indicator remains OFF, cycle line power OFF.
3. Loosen the screws holding the power supply to the chassis, as described in
step 5 on page 8.
4. Slide the power supply out so that the rear connector is disconnected.
5. Reapply input power.
6. If the indicator:
• turns ON:
a. Verify that the module loads in the system are within the output
rating of the power supply.
b. Power down the power supply.
c. Reinstall the power supply in the chassis.
• turns OFF, return the power supply to your local Rockwell Automation
distributor.
Publication 1756-IN596A-EN-P - December 2004
44148
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