Applicable Systems
AC500
AC590
ACS580
ACS880
Symptoms
Input mains supply lost or below ride-through threshold.
Possible Causes
- Input power supply interruption
- Main contactor drop-out
- Supply fuse blown
Troubleshooting Steps
- Step 1: Check input voltage on all three phases
Voltage within rated range - Step 2: Inspect main contactor and fuses
Contactor engaged, fuses intact - Step 3: Verify supply cable connections
All connections tight
How to Reset
Reset automatically when mains returns or via control panel.
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Source: ABB ACS580 Firmware Manual
Category: PLC & VFD
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