Applicable Systems
Modicon M221
Modicon M241
Modicon M251
Modicon M340
Modicon M580
Altivar
Symptoms
Power circuit fault: power stage hardware fault detected.
Possible Causes
- IGBT power module failure
- Gate driver failure
- Power stage component damage
Troubleshooting Steps
- Step 1: Power cycle the drive
Fault may clear if transient - Step 2: Inspect for physical damage
No visible damage - Step 3: Replace power stage if persistent
New power stage operates correctly
How to Reset
Reset via control panel after power stage repair.
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Source: Schneider Electric ATV320 Programming Manual
Category: PLC & VFD
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