Lag Error

What does 42 mean?

Immediate switch-off because the actual position or speed of the motor is lagging too far behind its setpoint. Possible causes include an incorrectly connected encoder, overly short acceleration ramps, a P component of the positioning controller that is too small, incorrectly set speed controller parameters, a lag fault tolerance value that is too small, or mechanical binding in the system.

• The actual motor speed or position is lagging significantly behind the commanded value.
• Low motor torque or excessive load preventing speed following.
• PID controller tuning is inadequate for the application dynamics.
• Inaccurate feedback signal causing perceived lag.

Click steps to track your progress.

1. 1

   Check the encoder connection for integrity and correct wiring.

2. 2

   Extend the acceleration/deceleration ramps to reduce demand on the motor and controller.

3. 3

   Set the P component (proportional gain) of the positioning controller to a higher value.

4. 4

   Reset or finely tune speed controller parameters.

5. 5

   Increase the lag fault tolerance value (e.g., P703, P704 for positioning tolerance).

6. 6

   Check the wiring of the encoder, motor, and mains phases.