Output phase loss

What does 3381 mean?

The drive has detected a loss of one or more phases in the motor's connection. This fault will trip the drive based on the setting in parameter 31.19 Motor phase loss to protect the motor from damage due to unbalanced currents. Running a motor with a phase loss can cause severe winding damage and overheating.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the integrity of the motor itself, including its terminals and internal connections.

2. 4

   Review parameter 31.19 Motor phase loss to understand the drive's configured reaction to this condition.