Applicable Systems
AC500
AC590
ACS580
ACS880
Symptoms
Power module +5V supply fault detected.
Possible Causes
- Internal +5V power supply failure
- Power module component failure
- Control board power fault
Troubleshooting Steps
- Step 1: Check internal power supply voltages
+5V rail within specification - Step 2: Inspect power module for visible damage
No physical damage - Step 3: Replace power module if voltage is out of spec
New module provides correct voltage
How to Reset
Reset via control panel after power supply repair.
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Source: ABB ACS580 Firmware Manual
Category: PLC & VFD
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