Rockwell Automation 2094-xMxx-S Kinetix 6000 Multi-axis Servo Drives User Manual User Manual
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Rockwell Automation Publication 2094-UM001H-EN-P - June 2013
Chapter 7
Troubleshooting the Kinetix 6000 Drive System
Presence of noise on command or
motor feedback signal wires.
Recommended grounding per installation instructions have not been followed.
• Verify grounding.
• Route wire away from noise sources.
• Refer to System Design for Control of Electrical Noise,
publication
Line frequency present.
• Verify grounding.
• Route wire away from noise sources.
Variable frequency can be velocity feedback ripple or a disturbance caused by
gear teeth or ballscrew balls, for example. The frequency can be a multiple of
the motor power transmission components or ballscrew speeds resulting in
velocity disturbance.
• Decouple the motor for verification.
• Check and improve mechanical performance, for
example, the gearbox or ballscrew mechanism.
No rotation
The motor connections are loose or open.
Check motor wiring and connections.
Foreign matter is lodged in the motor.
Remove foreign matter.
The motor load is excessive.
Verify the servo system sizing.
The bearings are worn.
Return the motor for repair.
The motor brake is engaged (if supplied).
• Check brake wiring and function.
• Return the motor for repair.
The motor is not connect to the load.
Check coupling.
Motor overheating
The duty cycle is excessive.
Change the command profile to reduce acceleration or
deceleration or increase time.
The rotor is partially demagnetized causing excessive motor current.
Return the motor for repair.
Abnormal noise
Motor tuning limits are set too high.
Run Tune in the Logix Designer application.
Loose parts are present in the motor.
• Remove the loose parts.
• Return motor for repair.
• Replace motor.
Through bolts or coupling is loose.
Tighten bolts.
The bearings are worn.
Return motor for repair.
Mechanical resonance.
Notch filter can be required (refer to Axis Properties
dialog box, Output tab in the Logix Designer
application).
Erratic operation - Motor
locks into position, runs
without control or with
reduced torque.
Motor power phases U and V, U and W, or V and W reversed.
Check and correct motor power wiring.
Sine, Cosine or Rotor leads are reversed in the feedback cable connector.
Check and correct motor feedback wiring.
Sine, Cosine, Rotor lead sets of resolver feedback are reversed.
Check and correct motor feedback wiring.
Table 108 - General System Anomalies (continued)
Condition
Potential Cause
Possible Resolution