Calibration Issues

This article will review what to do when

  •  The controller displays a “Calibration Failure” message
  • The carriage moves to the end of the rail, but the Motion unit does not recognize the carriage has reached the end and the motor continues
  • Unexpected noise from the Motion motor

Typically calibration issues are caused a loose drive shaft pulley and/or loose slider belt. The pulley screw, shown in the center of the picture below, connects the drive shaft (where the motor mounts) to the belt and lets the motor move the slider carriage.



     

First confirm that the belt pulley and drive shaft are tight:

  1. Hold the carriage still with one hand. Do not move the carriage.
  2. Twist the drive shaft (without the motor on it) with your other hand.
  3. If you’re able to twist the pin without the carriage moving, then the pulley is loose.

 

If you are able to twist the pin without the carriage moving:

  1. Locate the small hex screw on the pulley (see image above). The hex screw is just above the teeth that connect to the belt.
  2. Push the drive shaft down towards the pulley as you tighten the pulley. This will prevent the drive shaft from coming loose.
  3. Tighten the small hex screw using a 1.5mm hex wrench.

Once the pulley is adjusted you will need to tighten the slider belt as well. Our YouTube video reviews how to properly put on and tighten the belt - Rhino Slider EVO - Interchangeable belts and rails


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