Error during rotor position adjustment

What does PL mean?

The rotor position adjustment process was cancelled, often because an Sd7 or Sd8 error occurred during adjustment with an absolute value encoder. Without a successfully executed rotor position adjustment, the drive may carry out uncontrolled movements.

• Incorrect motor data entered into parameters (e.g., C0203, C0204, C0205) preventing accurate motor model computation during adjustment.
• Absolute encoder feedback cable wiring fault (e.g., loose shield, swapped A/B/Z signals) causing corrupted position data during the adjustment routine.
• Mechanical coupling issues (e.g., backlash, slippage) between the motor shaft and the encoder, leading to inconsistent position feedback.
• External mechanical load applied to the motor during the rotor position adjustment procedure, preventing free rotation or causing unexpected torque.
• Motor brake failing to release completely during the adjustment process, impeding motor rotation.

Click steps to track your progress.

1. 1

   Verify motor nameplate data and cross-check against parameters C0203 (Rated current), C0204 (Rated voltage), C0205 (Rated speed), and C0206 (Rated frequency) for accuracy.

2. 2

   Inspect the absolute encoder cable for insulation damage, proper shielding connection to the drive's PE terminal, and continuity between the encoder and drive terminals (e.g., X11.1, X11.2, X11.3).

3. 3

   Mechanically decouple the motor from the load if possible, then re-attempt the rotor position adjustment procedure (Parameter P0-23 = 1).

4. 4

   Check for any external forces or obstructions preventing free rotation of the motor shaft during the adjustment process.

5. 5

   If a motor brake is present, measure the voltage at the brake terminals (e.g., X1.3, X1.4) to confirm it is releasing correctly when energized (24VDC).