Auto-tuning Acceleration Fault

What does Er - 09 mean?

The motor did not accelerate as specified during the auto-tuning process. This may be due to an acceleration time setting that is too short, torque limits set too low, or the motor being connected to a heavy mechanical load.

• Acceleration time parameter (e.g., C1-01) set too short for the connected motor and load inertia, preventing motor from reaching target speed.
• Torque limit parameters (e.g., L6-01 for motor torque limit, L6-02 for generator torque limit) set too low, restricting necessary acceleration torque.
• Motor connected to a high inertia or continuous mechanical load during the auto-tuning process, which typically requires the motor to be uncoupled.
• Incorrect motor parameters (e.g., motor rated current P2-01, motor rated torque P2-07) leading to an inaccurate torque model for tuning.
• Mechanical binding or excessive friction in the motor or connected load (if not disconnected) impeding acceleration.

Click steps to track your progress.

1. 1

   1. Temporarily increase the acceleration time parameter (e.g., C1-01) by 50% for auto-tuning. Restore to original value after successful tuning.

2. 2

   2. Temporarily set torque limit parameters (L6-01, L6-02) to 150% or disable them during auto-tuning. Restore to production values afterward.

3. 3

   3. Physically disconnect the motor from any mechanical load before initiating auto-tuning, unless the drive explicitly supports tuning with load.

4. 4

   4. Verify all motor nameplate data (rated current, voltage, poles, rated torque) against drive parameters (P2-01 to P2-07).

5. 5

   5. Re-run auto-tuning (e.g., using parameter H3-02 = 1 or 2). If the fault persists, manually rotate the motor shaft to check for mechanical binding.