Power down the drive completely and wait for the "Charge" LED to turn off. Remove and re-insert the .

The drive cuts output current to the motor, and the motor coasts to a stop. Common Causes Safety Circuit Interruption

Resolving an H66 error requires a systematic review of the drive's parameter settings. The following steps are generally recommended:

: A short circuit in the control wiring can bridge two input terminals, causing a phantom second run command.

If you want, I can adapt this into a formatted PDF, include model-specific H66 register meanings for a particular Yaskawa drive family (specify model), or generate a printable step-by-step checklist tailored to your machinery.

>