Applicable Systems
Modicon M221
Modicon M241
Modicon M251
Modicon M340
Modicon M580
Altivar
Symptoms
Output phase 1 open circuit detected.
Possible Causes
Motor cable disconnected on one phase, or motor winding open.
Troubleshooting Steps
Check all output phase connections, verify motor winding continuity.
How to Reset
Fix connection and reset
Source: Schneider ATV630 fault manual
Category: Electrical