UniSlide® Linear Stage Troubleshooting Guide
UniSlide Stage Troubleshooting
First - always read the Users Manual. Comments can also apply to UniSlide Pre-configured XY Tables.
| Symptom | Possible Cause | Possible Fixes |
|---|---|---|
| The carriage binds or will not move. | During mounting, the base may have been over-tightened or mounted to an irregular surface. This can distort the assembly, causing carriage binding. | Loosen screws and re-tighten to the proper torque. Mount the base using screws to the following torque: |
Motorized UniSlides: • MA1500 Series 1 ft. lb. | ||
| • Remount base to a flat surface. | ||
| Mounting non-flat plate or blocks to the carriage to hold the load can also distort the assembly, causing carriage binding. Anything attached to the assembly must be mounted flat to the carriage. | Re-mount load flat to the carriage or use a Velmex adapter plate designed to carry the load. | |
| Mounting screws holding payload to carriage may be too long and screwed into lead screw causing damage. | Re-mount load using a shorter screw length that does not extend past the carriage or use a Velmex adapter plate designed to carry the load. | |
| If the distortion is still present and the carriage still binds contact Velmex Application Engineers. The carriage and/or the lead screw may need to be replaced, or the Assembly may need to be returned on an RMA for repair. | ||
| There is some backlash in the carriage on a motorized UniSlide. | Some backlash maybe seen when the lead screw and carriage start to wear. | Adjust by tightening the Allen cap screw on the top of the drive nut. (CAUTION: Over tightening will increase friction, could stall the motor and cause increased wear.) |
| Use the "finger test" to check for binding. Grasp the lead screw on either side of the carriage and twist. If the lead screw can't be moved, the slide or the load may not be mounted properly or the mounting bolts are too tight. | ||
| There appears to be side play on a motorized UniSlide. | Objectionable side play can be reduced by tightening the adjustable expansion gibs that control the fit of the carriage. | Adjust the set screws located at the ends of the carriage. (CAUTION: Over tightening will increase friction, could stall the motor and cause increased wear.) |
| The limit switches do not appear to stop the carriage. | The limit switch collars must be set sufficiently distant from the ends of the Assembly to avoid collision with the end plate or limit switch cover. The carriage stopping distance is dependent on the speed just before limit switch activation. | Set the collar position for the maximum anticipated carriage speed. |
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