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Troubleshooting
Troubleshooting Electric Cylinders
Description
Axial play too large.
Squeaking noises or vibrations.
Thrust rod does not move.
No response from electric cylinder.
Electric cylinder is enabled but not
operating or is operating erratically.
Possible cause
Wear
Distortions
Tuning is necessary.
Running noises at the spindle
support of an electric cylinder with a
300 mm (11.81 in.) stroke and high
positioning speeds.
Jamming in mechanical end
position, after traveling at excessive
speed or into end position.
Load is too large.
Ambient temperature too low
(increased breakaway torque in
initial run due to increasing viscosity
of the lubricants in the spindle
system).
Controller/drive not enabled.
Controller/drive faulted.
Improper/failed wiring.
Feedback cable can be damaged.
Feedback wiring can be incorrect.
Rockwell Automation Publication MPAI-IN001F-EN-P - January 2016
MP-Series Heavy-duty Electric Cylinders
Corrective action
•
Replace actuator cylinder.
•
Send to Rockwell Automation for repair.
•
Verify the electric cylinder is free of stress
and evenly supported ≤ 0.2 mm
(0.008 in.).
•
Lubricate thrust rod. See Configure Your
Kinetix 300 Servo Drive with MotionView
OnBoard on
page
41.
•
Modify positioning speed.
Modify control parameters.
Normal, no impairment of function.
•
Loosen jamming 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).
•
Reduce load mass.
•
Reduce positioning speed.
•
Return for repairs.
•
Reduce load mass.
•
Reduce positioning speed.
•
If necessary, allow higher current with
servo motors (see operating instructions for
the motor).
•
Increase ambient temperature.
Enable controller/drive.
Reset the controller/drive.
Check the wiring.
Test the feedback cable.
Verify correct feedback wiring.
49
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