EVOLUTE RTLA50-S installation guide
3
EVOLUTE readhead installation drawing
Dimensions and tolerances in mm
(Yaw tol. ±0.75°)
Set-up LED
8
6.5 min
36
18
12
14
3
Scale
reading
surface
Readhead to
scale clearance
Scale thickness 0.2
Adhesive thickness 0.2
Rideheight
0.8 ± 0.25
2 mounting holes M3 through,
counterbored each side, 3 deep
†
0.31
R>20 Dynamic bend radius
R>10 Static bend radius
(Pitch tol. ±0.5°)
Ø 4.7 ±0.2
4.25 ±1
Optical centreline
17.2
Scale and optical centreline
16.5
(Roll tol. ±0.5°)
0.05
0.47
7.8
6 typ*
6.4
Orientation of scale determines count direction
A
Detail A
*Extent of mounting faces.
†
Recommended thread engagement
5 mm (8 mm including counterbore).
Recommended tightening torque
0.5 to 0.7 Nm.
10 typ*
Moving head
increases count
direction
Moving head
increases count
direction
NOTE:
Reversing head orientation has no effect on count direction.
