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REXA30 ring flange mounting
•
The REXA30 ring should be flange mounted onto a flat surface to minimise 2-per-rev distortion.
•
Taper mounting is not suitable for thick cross-section REXA rings.
•
To avoid distorting to the scale, the REXA should not be interference fitted.
•
Some eccentricity of the ring is acceptable because it will be compensated using two readheads.
Mounting shaft preparation
There is a mounting face on the lower side of the REXA30 ring (diameter D2).
A flat surface should be prepared on the mounting shaft to match.
The total axial run-out of the mounting surface should be within 10 μm.
N × M5 × 0.8 × 10 deep
For dimensions D1, D2, D4 and number of holes N, refer to
42
RESOLUTE™ Functional Safety Installation guide and safety manual Siemens DRIVE-CLiQ encoder system
(< D1 −0.75)
0.01
A
D4
D2
'REXA30 ring dimensions'
on page 40.
A
Ø0.2
A
Dimensions and tolerances in mm
≥ 0.75
D4
D1
D2
Original instructions
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