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Speed
Clocked
output
option
5 µm
1 µm
0.5 µm
0.2 µm
(MHz)
(D)
(X)
(Z)
12
12
12
50
40
12
12
12
12
12
9.06
25
12
12
8.06
20
12
10.36
5.18
12
10
12
8.53
4.27
08
12
6.91
3.45
12
5.37
2.69
06
04
12
3.63
1.81
0.730
4.53
0.910
0.450
0.180
01
*For a readhead with a 1 m cable.
Angular speed depends on ring diameter – use the following equation to convert to rev/min.
V × 1000 × 60
Angular speed (rev/min) =
π
D
VIONiC RESM20/REST20 angle encoder system
Maximum speed (m/s)
0.1 µm
50 nm
40 nm
25 nm
(W)
(Y)
(H)
(M)
(P)
7.25
3.63
1.81
1.45
0.906
5.80
2.90
1.45
1.16
0.725
3.63
1.81
0.906
0.725
0.453
3.22
1.61
0.806
0.645
0.403
2.07
1.04
0.518
0.414
0.259
1.71
0.850
0.427
0.341
0.213
1.38
0.690
0.345
0.276
0.173
1.07
0.540
0.269
0.215
0.134
0.360
0.181
0.145
0.091
0.090
0.045
0.036
0.023
Where V = maximum linear speed (m/s) and
D = external diameter of RESM20/REST20 (mm).
Minimum edge
separation*
20 nm
10 nm
5 nm
2.5 nm
(I)
(O)
(Q)
(R)
0.725
0.363
0.181
0.091
0.580
0.290
0.145
0.073
0.363
0.181
0.091
0.045
0.322
0.161
0.081
0.040
0.207
0.104
0.052
0.026
0.171
0.085
0.043
0.021
0.138
0.069
0.035
0.017
0.107
0.054
0.027
0.013
0.073
0.036
0.018
0.009
0.018
0.009
0.005
0.002
(ns)
25.3
31.8
51.2
57.7
90.2
110
136
175
259
1038
16
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