Motor phase V missing

What does 31 mean?

Motor phase V is not detected between the frequency converter and the motor. This indicates a break in the motor wiring for phase V or a problem with the motor's winding. Operating with a missing phase can cause motor damage, instability, and inefficient operation, potentially damaging the frequency converter output stage due to imbalanced loading.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Review Parameter 4-58 Missing Motor Phase Function and Parameter 14-90 Fault Settings for proper drive response configuration.