ABB · ACS880
The encoder has detected an internal error related to its position counter. This indicates a problem with the encoder's ability to accurately track position, which can lead to inaccurate motor control or positioning if unresolved.
Click steps to track your progress.
Verify the encoder type (e.g., incremental, absolute) and resolution settings in drive parameter P2-01 (Encoder Type) to ensure they match the installed encoder.
Measure the supply voltage at the encoder terminals X2:1 (24VDC) and X2:2 (GND) to confirm it is stable and within the specified range (e.g., 22-26VDC).
Inspect the encoder cable shield termination at both the drive and encoder ends for proper 360-degree grounding and secure clamping.
Check for loose connections or corrosion at all encoder feedback terminals (e.g., X2:A+, X2:A-, X2:B+, X2:B-) and tighten them to specification.
Replace the encoder feedback cable if physical damage (e.g., cuts, crushing) is observed or continuity tests fail on individual conductors.
Replace the encoder unit itself if all electrical, cabling, and parameterization checks are satisfactory and the error persists.