ABB · ACS800 Standard Firmware
A pulse encoder phase signal is missing, indicating a potential issue with the encoder, its wiring, or the encoder interface module. This will lead to inaccurate speed or position feedback for the drive, potentially affecting motor control stability.
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Inspect the pulse encoder unit and all its wiring connections for damage or looseness.
Inspect the pulse encoder interface module and all its wiring connections for damage or looseness.