Error during rotor position adjustment

Hva betyr PL ?

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.

Klikk på steg for å spore fremgangen.

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).