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33. When done make sure parameter 34210 [0] shows 2 for all axes (axis with motor encoder)
34. When done make sure parameter 34210 [0] and parameter 34210 [1] shows 2 for all axes (axis with scale)
3.32 Check Axis Backlash
Tools Required: 0.0001” resolution dial indicator, remote handwheel (manual pulse generator)
• Set the indicator along the axis which is being measured. The needle should be in contact with a flat
machined surface and the base on a stable, fixed point. See the pictures below which illustrate the setup for
the X, Y, and Z axes.
• Using the remote handwheel, move the axis in one direction either positive or negative until the indicator is
loaded by 0.002”.
• Zero the indicator.
• Move the axis in the same direction by 0.005”.
• Reverse the direction of the axis by 0.005”.
• The additional amount that is needed to reach zero after the 0.005” reverse in direction is the backlash
measured.
• This shows the loss of motion in the axis from the ballscrew and linear guide rails. Backlash compensation
can be adjusted according to the procedure outlined below in Section 3.33.
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