RBS-T Linear Encoder Installation Manual and Owner’s Guide
P/N 70000426
All rights reserved. Subject to change without notice.
Page 7 of 43
03-Nov-98
NOTE:
If the backer bar is not correctly aligned, the reader head will not read correctly.
3. Insert 0.005” shims under the backer bar spacers to adjust the alignment to within
limits. The kit contains 0.005” shims. If adding shims is not sufficient, it may be
necessary to face off a spacer.
4. Once the backer bar is aligned, fully tighten the mounting screws.
5. Recheck the alignment.
Installing and Aligning Y Axis Encoder
Forward mounting screw
installed in predrilled #8-32
mounting hole.
Mark mounting hole
locations with punch
Encoder
Backer Bar
Plastic Reader Head
Alignment Brackets
RBS-5
S/N 010
P/N
M.Length
-0034567
20501048
1200 mm
F05
S/N 010 -0034567
F 02
5V
RBS-5
T
Figure 3, Aligning the Encoder
1. Before installing the encoder, remove both end caps and visually check the
alignment of the reader head. Verify that the reader head is centered within the
housing and is not twisted in any way. Do not reinstall the end caps at this time.
2. Break loose the two screws holding the reader head alignment brackets to the
reader head. Re-tighten only enough to keep the brackets in place. The reader
head alignment brackets must be installed to align the reader head. They will be
removed at the end of the procedure.
3. Place the encoder against the backer bar and install the forward #8-32 mounting
screw.
NOTE:
On 12” and 16” installations the forward mounting screw will usually support the
encoder long enough to locate the undrilled mounting holes. When installing a long
encoder, mark and drill the first mounting hole near the center of the encoder. This will
help balance the weight of the encoder while the holes are being located.
4. Refer to
Figure 3, Aligning the Encoder
. Mount a magnetic indicator on the saddle
so the indicator probe measures the position of the top of the encoder.
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