Error 90
Error Message Displayed to user
•
E90
•
Notify Maintenance Steps Jammed
Keep error on screen until
OK
button pressed.
Condition
Maximum positive force exceeded error, as reported by Motor Controller. The drive system detected having to push
the steps excessively to maintain speed.
Cause
• Check for something jamming the steps.
Remedy
• Check for and remove entrapped objects by pushing steps backward by hand within 45 seconds of the jam.
Restarting the steps will reactivate the 45 sec un-jam period until cleared.
• Check for excessive step drag. Diagnose / repair as needed.
• Check motor wiring and phase continuity. Repair / replace as needed.
Page 111 of 153
