42
Phase VW Short
Allen-Bradley · PowerFlex 700
What does 42 mean?
Excessive current has been detected between output terminals V and W. This indicates a short circuit condition between these two motor phases or their connecting wiring, leading to very high currents and potential drive damage.
Common Causes
- Short circuit detected between Phase V and Phase W.
- Damaged insulation between Phase V and Phase W motor windings.
- Faulty motor power cable with V and W shorted.
- Internal short circuit in the drive's output stage.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check the motor and drive output terminal wiring for a shorted condition between V and W.
- 2
Replace the drive if wiring and motor are verified good.
Verified technical data. Last updated: March 2026
Related Faults
Source: Allen-Bradley PowerFlex 700