Causes

Possible Solutions

The frequency reference is assigned to an external source, and there is electrical interference in the signal.

Make sure that electrical interference does not have an effect on the signal lines.

  • Isolate control circuit wiring from main circuit wiring.

  • Use twisted-pair cables or shielded wiring for the control circuit.

  • Increase the value of H3-13 [Analog Input FilterTime Constant].

The cable between the drive and motor is too long.

  • Do Auto-Tuning.

  • Make the wiring as short as possible.

The PID parameters are not sufficiently adjusted.

Adjust b5-xx [PID control].