SmarAct METIRIO - Alignment to Linear Scales

5 SYSTEM INTEGRATION
5.3.1 Alignment to Linear Scales
Figure 5.7: Correct orientation of the METIRIO readhead with respect to the scale tracks.
Y
R
X
Z
working distance
Keep the working distacne within tolerances
Z
opt
=1.18 mm ±0.15 mm
Figure 5.8: Working distance
The signal quality will be optimal for alignment within the optimum position. The signal quality will
gradually be reduced when deviations from this position occur. Reduced signal quality is indicated
by decreasing circle diameter and deviation in shape and offset. If you meet the tolerances, the
X
Y
Z
R
Y
R
X
R
Z
A
B
pin 1
Figure 5.9: Tolerances for linear scales
Axis Optimum Position Tolerance
X direction of motion −
Y 0 mm (centered to TSL) ±0.50 mm
Z 1.18 (working distance) ±0.15 mm
R
X
0
◦
±1.1
◦
R
Y
0
◦
±2.0
◦
R
Z
0
◦
±1.1
◦
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