Allen-Bradley 2094-AC05-MP5 User Manual page 176

Chapter 7 Troubleshooting the Kinetix 6000 Drive System
Table 111 - General System Anomalies (continued)
Condition
No rotation
Motor overheating
Abnormal noise
Erratic operation - Motor locks into
position, runs without control or
with reduced torque.
176
Potential Cause
The motor connections are loose or open.
Foreign matter is lodged in the motor.
The motor load is excessive.
The bearings are worn.
The motor brake is engaged (if supplied).
The motor is not connect to the load.
The duty cycle is excessive.
The rotor is partially demagnetized causing excessive motor current.
Motor tuning limits are set too high.
Loose parts are present in the motor.
Through bolts or coupling is loose.
The bearings are worn.
Mechanical resonance.
Motor power phases U and V, U and W, or V and W reversed.
Sine, Cosine or Rotor leads are reversed in the feedback cable connector.
Rockwell Automation Publication 2094-UM001J-EN-P - March 2017
Possible Resolution
Check motor wiring and connections.
Remove foreign matter.
Verify the servo system sizing.
Return the motor for repair.
• Check brake wiring and function.
• Return the motor for repair.
Check coupling.
Change the command profile to reduce acceleration or
deceleration or increase time.
Return the motor for repair.
Run Tune in the Logix Designer application.
• Remove the loose parts.
• Return motor for repair.
• Replace motor.
Tighten bolts.
Return motor for repair.
Notch filter can be required (refer to Axis Properties
dialog box, Output tab in the Logix Designer
application).
Check and correct motor power wiring.
Check and correct motor feedback wiring.