H66 [top] — Yaskawa Error Code

Verify that the option card model is officially supported by your specific Yaskawa drive model.

By methodically following these steps, you should be able to resolve the H66 error and restore your Yaskawa drive to normal operation. If you need further assistance, the Yaskawa Solution Center can often provide immediate help 24/7.

Follow this systematic approach to isolate and eliminate the H66 error code. Step 1: Perform a Safe Power Cycle

The proportional (P) and integral (I) gains for speed and position loops are critical. Gains that are too high cause oscillation and overshoot. Gains that are too low cause sluggish response but can also lead to latch detection faults if the drive tries to compensate aggressively. yaskawa error code h66

Some early firmware versions of the A1000 and V1000 had overly aggressive latch detection. Check Yaskawa’s website for firmware updates (contact local distributor with your drive model number).

What is the of your Yaskawa drive (e.g., GA700, A1000)?

The is a clear signal that the drive cannot properly communicate with its installed option module. By checking the physical connection, validating the hardware compatibility, and resetting configurations, most H66 errors can be resolved quickly. Verify that the option card model is officially

Running with a current offset fault can cause:

If the error persists, the fault likely lies within the main SERVOPACK or inverter unit itself, necessitating repair or replacement of the drive. Conclusion

The key takeaway:

: Use the digital operator to check the fault history (Parameter

Review parameters regulating how the drive handles communication errors.

: Verify that the jumpers between H1-HC and H2-HC are secure if you are not using an external safety device. External Signal Follow this systematic approach to isolate and eliminate