Cause : Analog output calibration failed comes when the zero offset calibration of one or both of the analog outputs has failed. This indicates that the drive hardware has failed or a voltage is applied to the output via a low impedance, possibly due to a wiring error.

1. The failed output can be identified by the sub-trip number.
2. Check the wiring associated with analog outputs
3. Remove all the wiring that is connected to analog outputs and perform a re-calibration by power cycling the drive.
4. If trip persists replace the drive.