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Rockwell Automation Publication VPAR-IN001B-EN-P - February 2019
Kinetix VP Electric Cylinders
Troubleshooting
This table describes some possible anomalies and steps you can take to correct them.
Troubleshooting
Description
Possible Cause
Corrective Action
Axial play too large.
Wear.
Replace actuator cylinder.
Send to Rockwell Automation for repair.
Squeaking or vibrations.
Distortions.
Check that the electric cylinder is free of stress
and evenly supported
≤
0.2 mm (0.008 in.).
Lubricate piston rod. See Maintenance on
Modify positioning speed.
Needs tuning.
Modify control parameters.
Noises from the spindle support
(with strokes 300 mm (11.81 in.)
and high positioning speeds).
Normal, no impairment of function.
Piston rod does not move.
Jam in mechanical end position,
after traveling at excessive speed or
into end position.
Loosen jam manually.
1. Switch off power supply.
2. Remove motor and coupling housing.
3. Turn drive shaft.
Reduce speed for reference travel.
Provide software end positions, at least
0.25 mm (0.01 in.) from the mechanical end
positions (stops).
Load is too large.
Reduce load mass.
Reduce positioning speed.
Return for repairs.
Ambient temperature too low
(increased breakaway torque in
initial run due to increased viscosity
of the lubricants in the spindle
system).
Reduce load mass.
Reduce positioning speed.
If necessary, allow higher current with servo
motors (see operating instructions for the
motor).
Increase ambient temperature.
No response from electric cylinder.
Controller/drive not enable.
Enable controller/drive.
Controller/drive faulted.
Reset the controller/drive.
Improper/failed wiring.
Check the wiring.
Electric cylinder is enabled but not
operating or is operating erratically.
Feedback signal interference.
Test the feedback signal.
Feedback wiring can be incorrect.
Verify correct feedback wiring.
Electric cylinder is operating but is not
up to rated speeds/forces.
Motor phases are wired incorrectly
or in incorrect order.
Verify correct motor power wiring.
Drive can be improperly tuned.
Check gain settings.
Drive can be configured improperly
for electric cylinder used.
Check drive setting for number of poles,
voltage, current, resistance, inductance,
inertia, and other motor settings.