Yaskawa Error Code H66 ((top)) Jun 2026

: Electromagnetic interference (EMI) can sometimes cause "ghost" signals on the control circuit, tricking the drive into seeing a second command. Troubleshooting and Solutions To resolve the H66 error, follow these structured steps: Check Input Status :

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

Wiring & continuity checks

Running with a current offset fault can cause: yaskawa error code h66