116
Operation Problems
Problem Cause/Solution/Troubleshoot
Motor only moves one direc-
tion; direction of weighting
(e.g. counterweights pulling
up for empty car)
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.
Motor only moves slightly or
jerks briey
Check the motor current. Refer to Motor Draws High Current for
additional troubleshooting.
Refer to Motor Does Not Move for additional troubleshooting.
Output current is limited
(clamped)
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 addi-
tional troubleshooting.
Check if motor current is excessive. Refer to Motor Draws High Current
for additional troubleshooting.
Maximum Torque limit or
Peak Current limit reached.
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.
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