E.EF fault in KEB COMBIVERT R6 Drive indicates an External Fault. This means an external safety device or logic condition triggered the drive to trip, often due to high regenerative currents or voltage sags.
Cause:
- Triggered by external device or use of jumper at X2A.15-X2A.17.
- High regenerative / supply current or excessive line voltage sag causing the DC bus voltage to drop below the level set in CP.19.
Remedy:
Refer to section 6.2.2 regarding high regenerative / supply current and excessive line voltage sag.
