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REXA30 ring specifications
The REXA ring scale must be installed and operated with the following specifications.
Installation temperature
Operating temperature range
Mounting shaft coefficient of thermal expansion at 20 °C
REXA30 ring flange mount
Safety factor
2
Safe position
±1 mm
Maximum
Ring diameter
permissible speed
(mm)
(rpm)
52
7 500
57
6 400
75
5 900
100
3 900
103
3 700
104
3 600
115
3 200
150
2 300
183
2 000
NOTE: The 'Mechanical Safe Position' is the maximum distance the scale might move from its installed position and will be undetected by the readhead.
38
RESOLUTE™ Functional Safety Installation guide and safety manual Siemens DRIVE-CLiQ encoder system
20 ±5 °C
0 to 80 °C
14.5 to 16.5 µm/m/°C
Mechanical
Ring diameter
safe position
(mm)
(°)
2.204
200
2.010
206
209
1.528
1.146
229
255
1.113
1.102
300
0.996
350
0.764
417
0.626
Maximum
Mechanical
permissible speed
safe position
(rpm)
(°)
1 800
0.573
1 700
0.556
1 700
0.548
1 500
0.500
1 300
0.449
1 000
0.382
970
0.327
740
0.275
Original instructions
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