Cause : Inversion Prevention Detection (CLV/PM control mode only) comes when pulses indicate that the motor is rotating in the opposite direction of the speed reference. Set the number of pulses to trigger inverse detection to F1-19.

• Set the value for Δθ to E5-11 as specified on the motor nameplate.
• If the problem continues after cycling power, replace the PG option card or the PG encoder. Replacing the PG encoder or changing the application to rotate the motor in reverse requires readjustment of the Z-pulse offset.