KEB COMBIVERT F5, Reference Manual, Page: 294 / 349

7.3 Operation Problems
Troubleshooting Operation Problems and potential solutions. Refer to Section 7.4 for additional Diag-
nostics Solutions. Additional troubleshooting of learn procedures are listed as well at the end of this
section.
Problem Cause/Solution/Troubleshoot
Motor Does Not Move Check the Motor Current. Refer to Motor Draws High Current for
additional troubleshooting.
Make sure the brake is picking and/or not dragging.
Make sure speed is set correctly in LS02.
Check the Inverter Status to determine whether there is indication a run
command is being given (i.e. Up/Down Constant Speed/Acceleration/
Deceleration, etc.).
Check Input Status to determine whether the correct inputs are being
signaled for a run command.
Check the Command Speed to determine what the dictated speed
command is.
Check the Active Speed and Active Pr ofile to determine what speed
setting is being selected.
For digital inputs, check setting of the selected Active Speed or
Active Profile.
For analog speed commands, check the Raw and Processed
(Analog) Patterns, the High Speed setting, and speed settings for
any Active Profile.
Check to make sure the speed control gains (KP, KI Offset) are not
set too low.
For open loop induction motors, the Low Speed Torque Boost may
need to be increased to lift the load or decreased if either the Maximum
Torque of Inverter Peak Current limit is reached.
Diagnostics and Troubleshooting
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