Causes Possible Solutions There is too much leakage current from the drive. Increase the ELCB sensitivity or use ELCB with a higher threshold. Use C6-02 [Carrier Frequency Selection] to decrease the carrier frequency. Decrease the length of the cable used between the drive and the motor. Install a noise filter or AC reactor on the output side of the drive. Set C6-02 = 1 [2.0 kHz] when connecting an AC reactor. Disable the internal EMC filter.