Phase W to Ground Fault

What does 40 mean?

A phase-to-ground fault has been detected between the drive and motor on output phase W. This indicates a severe insulation breakdown or short circuit between phase W and earth ground, posing a safety hazard and risk of equipment damage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Replace the drive if wiring and motor are verified good.