Instruction manual

18
3. Mount the scale using M4 (or #6) screws. It may be necessary to
use washers or spacers to ensure a good mount if the scale is to be
mounted on an uneven surface. Be sure the screw heads do not
protrude above the surface of the extrusion. If they do, they will
interfere with the readhead.
a. Check that the scale is properly aligned with the direction of
motion of the moving part (any error in alignment will be
magnified by the digital components, and could cause premature
failure). Adjust the scale alignment if necessary.
4. Referring to the figure, note these two installation requirements:
a. For accurate measurements, the guide clip should be mounted
perpendicular to the direction of travel of the readhead.
b. Over the full range of travel, the guide clip should exert some
pressure on the readhead so the two move as a single unit.
Note: Failure to use the guide clip will void the warranty.
Guide
Clip
Scale
Cable
Readhead
Moving
part of
machine
Typical Model 250 Installation