Cause: ENC NEEDS INIT comes when PMAC motor used with a relative encoder – Needs to run init once per power cycle. This initialization process involves reading encoder parameters (like pulses per revolution, encoder type) and establishing the correct electrical interface.

ENCI ENC NEEDS INIT fault in Parker AC890 drive indicates that the encoder interface requires initialization. This typically happens when the drive has lost its association with the connected encoder, or when certain encoder-related parameters have been changed, requiring a re-initialization process.