ACS550 Encoder faults This topic contains 4 replies, has 2 voices, and was last updated by Joshua Hubbard 4 months, 3 weeks ago. Author Posts June 29, 2017 at 9:19 am #9982 Joshua HubbardParticipant Hi my motor will go not more 1000RPM makes F0023 error please help me June 29, 2017 at 9:23 am #9983 John CGalco Representative Hello Joshua, Does the drive reset and run after it faults? June 29, 2017 at 9:24 am #9984 Joshua HubbardParticipant Yes to about 1000RPM and trip again June 29, 2017 at 9:27 am #9985 John CGalco Representative Ok good, have you checked the encoder coupling to make sure it is tight? June 29, 2017 at 10:45 am #9986 Joshua HubbardParticipant Took a while to get at it but that was a good call John. 1 of the set screws was about 3 turns out, so tightened it up and drive now runs full speed no faults. Thanks for all your help Author Posts You must be logged in to reply to this topic.