Output Current Imbalance

What does LF2 mean?

The drive detected an imbalance in the current magnitudes across its output phases. This can indicate a motor issue, output wiring problem, or unbalance in the motor load.

Click steps to track your progress.

1. 1

   Inspect motor output cabling (U, V, W) for loose connections, damage, or signs of overheating at both the drive and motor terminals.

2. 2

   Measure the resistance of each motor phase winding (U-V, V-W, W-U) directly at the motor terminals with the motor disconnected from the drive. Compare readings for significant deviation (e.g., >5%).

3. 3

   Verify the mechanical load connected to the motor for any binding, obstruction, or unbalance that could cause uneven current draw.

4. 4

   Check drive parameters related to motor data (e.g., motor rated current, poles, auto-tuning status) to ensure they are correctly configured according to the motor nameplate.