Current Offset Fault

Hva betyr CoF ?

An error related to the current offset calibration or measurement has occurred within the drive. This affects the accuracy of current readings and motor control.

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1. 1

   Inspect motor power cables for damage, proper termination, and loose connections at both the drive output terminals and the motor terminal box.

2. 2

   Verify drive parameters related to motor data (nominal voltage, current, frequency, RPM) are accurately configured to match the motor nameplate.

3. 3

   Perform a static auto-tuning procedure (if safe and permissible) to allow the drive to recalibrate its motor model and current sensing.

4. 4

   Check the integrity of all ground connections for the drive, motor, and shielded motor cables to ensure proper grounding.

5. 5

   Cycle main power to the AC drive and motor, then monitor if the CoF fault reoccurs upon restart or run command.