Auto-tuning Fault

What does Etn1 mean?

This fault indicates a failure during the Altivar 212 drive's auto-tuning process, which can be caused by incorrect motor parameters, an oversized motor, an undersized cable, or the motor not being completely stopped.

• Parameters F401 ([Slip Compensation]) to F494 ([Mot. adj coefficient]) are incorrectly set.
• The motor is too large for the drive.
• The motor cable gauge is too small.
• The motor is still rotating at the start of the auto-tune.
• The drive is not powering a 3-phase induction motor.
• Measured current at initial position detection during auto-tuning is too small or large according to motor inductance or output phase loss.

Click steps to track your progress.

1. 1

   Verify and set parameters F401–F494 correctly.

2. 2

   Ensure the drive is properly sized for the motor.

3. 3

   Use a motor cable with the correct gauge for the application (e.g., ensure leads are less than 30 m).

4. 4

   Verify that the motor is completely stopped and de-energized before initiating auto-tune.

5. 5

   Ensure the drive powers only a 3-phase induction motor for auto-tuning.