Code GF: Ground Fault

Code type: Fault Manual section: Yaskawa A1000 Troubleshooting Motor insulation is damaged. - Check the insulation resistance of the motor. - Replace the motor. A damaged motor cable is creating a short circuit. - Check the motor cable. - Remove the short circuit and turn the power back on. - Check the resistance between the cable and the ground terminal. - Replace the cable. The leakage current at the drive output is too high. - Reduce the carrier frequency. - Reduce the amount of stray capacitance. The drive performed a current offset adjustment while the motor was rotating. - The value set exceeds the allowable setting range while the drive automatically adjusts the current offset (this generally only happens when attempting to restart a PM motor that is coasting to stop). - Enable Speed Search at start (b3-01 = 1). - Perform Speed Search 1 or 2 (H1-□□ = 61 or 62) via one of the external terminals. Note: Speed Search 1 and 2 are the same when using PM OLV. Hardware problem. Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or your nearest sales representative.