Applicable Systems
ACS580
ACS880
ACS510
ACS550
ACS800
Symptoms
ABB ACS580 drive reports fault during normal operation indicating drive or motor issue requiring diagnostic evaluation.
Possible Causes
- Motor stall detection due to excessive load or mechanical jam
- Motor phase loss detection indicating open phase or contactor failure
- Control board communication timeout on internal drive bus
- PID controller setpoint feedback signal loss during process control
Troubleshooting Steps
- Step 1: Read fault code on ACS580 control panel
Fault code and description displayed on keypad - Step 2: Check motor connection and cable continuity
All three phases show continuity with no open circuits - Step 3: Verify PID feedback sensor signal
Feedback signal within expected range and stable - Step 4: Inspect motor for mechanical binding or jam
Motor shaft rotates freely with no binding
How to Reset
Reset by: 1) Correct the fault condition. 2) Press RESET on control panel. 3) Run test operation. 4) Verify normal operation.
Common Replacement Parts
- ACS580-CTL-01: ABB ACS580 control board (Verify frame size before ordering)
Frequently Asked Questions
- Q: What is motor stall protection?
Motor stall protection monitors motor speed feedback. If the motor speed drops below 50% of reference for more than 20 seconds while the drive is outputting current, the drive trips to protect the motor from thermal damage due to stalled rotor current.
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Source: ABB ACS580 User's Manual
Category: Electrical
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