There is a substantial difference in voltage levels between the input phases, which can stress the drive's internal components. Loose Connections:
This determines if the drive coasts to a stop, ramps to a stop, or continues running when a fault occurs.
If you have an identical, working drive on-site, temporarily swap the communication option card. If the fault moves with the card, the option card is defective and must be replaced. yaskawa error code h66
Modify the target value to one of the unscaled baseline parameters: . Press ENTER to commit the parameter.
: A parameter related to the analog input gain or bias is set outside the drive's allowable limits. There is a substantial difference in voltage levels
The drive will typically trigger a major fault, cutting power to the motor for safety. Primary Causes of the H66 Error
If these are off by more than 10%, re-run autotuning with the motor . If the fault moves with the card, the
Understanding why this fault triggers is the first step toward fixing it. The discrepancy usually stems from one of four areas: 1. Wiring Issues
Installing a feedback or communication card that is not supported by your specific drive model can result in an initialization error. Step-by-Step Troubleshooting Guide 1. Inspect Physical Connections
Go to the parameter settings for option cards (e.g., F-group or H-group).