Cause : Phase offset incorrect while running comes when the Encoder 3 trip indicates that the drive has detected an incorrect UVW phase angle while running (RFC-S mode only) or SINCOS phase error.

The feedback device which has caused the trip can be identified by the sub-trip number. Sub-trip & Reason given below:

1 - Drive position feedback interface 1.
2 - Drive position feedback interface 2.

• Check encoder shield connections.
• Ensure the encoder cable is one uninterrupted cable.
• Check the encoder signal for noise with an oscilloscope.
• Check the integrity of the encoder mechanical mounting.
• For a UVW servo encoder, ensure that the phase rotation of the UVW commutation signals is the same as the phase rotation of the motor.
• For a SINCOS encoder, ensure that motor and incremental SINCOS connections are correct and that for forward rotation of the motor, the encoder rotates clockwise (when looking at the shaft of the encoder).
• Repeat the offset measurement test.