A1210 / F1211 fault in WEG CFW900 Drive

A1210 / F1211 Slot B enc. Z cable disconnection Encoder channel Z signal is not detected correctly. fault in WEG CFW900 Drive

These codes indicate a Slot B Encoder Channel Z Cable Disconnection. This means the drive lost the zero-marker reference signal from the encoder.
Cause:

  • Broken or disconnected signal cable.
  • Encoder connection error.
  • Encoder has no power supply.

Remedy:

Verify the physical and electrical integrity of the encoder channel Z (marker) cabling. Check terminal connections and verify the encoder auxiliary power supply voltage.