KEB COMBIVERT F5 Reference Manual page 298

Diagnostics and Troubleshooting
Problem
Motor only moves one direction;
direction of weighting (e.g.
counterweights pulling up for
empty car)
Motor only moves slightly or
jerks briefly
Output current is limited
(clamped)
Maximum Torque limit or Peak
Current limit reached.
298
Cause/Solution/Troubleshoot
Check the motor current. Refer to Motor Draws High Current for
additional troubleshooting.
Check the Command Speed for dictated speed direction and whether
it changes between directions.
Check the motor current. Refer to Motor Draws High Current for
additional troubleshooting.
Refer to Motor Does Not Move for additional troubleshooting.
Check the setting for Maximum Torque. Refer to Peak current limit or
Maximum Torque limit reached for additional troubleshooting.
Verify the current is not being limited by the Inverter Peak Current
Limit. Refer to Peak current limit or Maximum Torque limit reached for
additional troubleshooting.
Check if motor current is excessive. Refer to Motor Draws High Current
for additional troubleshooting.
Check the setting for Maximum Torque. For full load and/or high
speed automatic operation, this value should be in the range of
200-250%.
Note, anytime any motor data parameters are changed or re-entered,
the Maximum Torque LC30 will automatically be reset to 150% !
Note, anytime a drive and keypad operator are synchronized the
Maximum Torque LC30 will automatically be reset to 150% !
Verify the current is not being limited by the Inverter Peak Current Limit.
Check if motor current is excessive. Refer to Motor Draws High
Current for additional troubleshooting.