Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 271)

Troubleshooting Your System
14–3
When an Error Exists
If an error exists within the controller, the controller LEDs operate as described in
the following tables.
The
Following
Error Exists
Probable Cause Recommended Action
No input
No Line Power
Verify proper line voltage and connections to the
controller.
power or
power supply
error
Power Supply
Overloaded
This problem can occur intermittently if power
supply is overloaded when output loading and
temperature varies.
The
Following
Error Exists
Probable Cause Recommended Action
Hardware
f
Processor Memory
Error Cycle power. Contact your local Allen-Bradley
representative if the error persists.
faulted
Loose Wiring Verify connections to the controller.
If the LEDs indicate:
FAULT
FORCE
POWER
RUN
If the LEDs indicate:
FAULT
FORCE
ЙЙ Й Й ЙЙ Й
POWER
RUN
Й ЙЙ
Troubleshooting