Section 5 – Troubleshooting
Rev. 2.0 04/16 28 H6630EM-LIT
Over Speed Trip – O.SPd
Over speed trips occur when the motor exceeds the speed threshold. The threshold is preset in the
drive program. If this trip occurs due to the motor speed being near the preset threshold, perform the
same steps as used for an overcurrent trip.
5-4 Motor Maintenance
The motor and actuators require minimal amount of maintenance. Components should be kept
reasonably clean and care taken when disconnecting motor and encoder cables as to not allow debris
to enter into the connections.
CAUTION
When reconnecting the motor or encoder cables, ensure the connectors are aligned
properly. Connectors should push ON and rotate without a lot of force.
Motor/Actuator Damage
Refer to the system diagram or order for the top level component number, replace with the
available spares or contact Fife Corporation for further assistance and a replacement.
Motor Auto Tune
There are auto tuning tests available through the controller in the event that a new motor
appears to be noisy, has a jerky motion, or fails to move due to an encoder fault, consult
Appendix B for trip codes. The auto tune test will measure the stator resistance, inductance of
the motor, and adjust the phase angle setting. These values will be retained in the controller
after performing a “1001” save.
If a new motor is installed and appears to be noisy (high frequency) or has a jerky motion, first
try adjusting parameter #03.10.
1. Record the value of parameter #03.10.
2. Reduce the value by 25%. Operate and see if the problem is eliminated. If not, try reducing by
another 25%.
3. Perform a “1001” save to retain the value.
If the adjustment of parameter #03.10 did not cure the problem, perform a motor auto tune per the
following:
a. Decouple the motor or actuator from the driven device.
b. Set parameter #17.13, set to “OFF” and do a “1001” save.
c. Set parameter #00.40 to 2 (this selects a low speed test which rotates the motor two rotations).
d. Pull the connector with terminal points 21 through 31 from the front of the drive.
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