Yaskawa DV2 fault code meaning

Series: L7

Z phase noise fault detection

drive

Meaning: (Continuously detected while power is on) Abnormally timed Z phase pulses are detected 10 consecutive times (the phase difference between the previous Z phase detection and the current detection exceeds ±5 degrees per motor revolution); Noise is present in the PG cable (Z phase); The PG cable wiring is incorrect; The PG card is damaged; PG (motor side) is damaged

Possible causes

Source: Yaskawa L7 Series Elevator Drive Instruction Manual Fault Diagnosis P263