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RESM20 ring specifications
Pitch
Material
Coefficient of thermal expansion (CTE) at 20 °C
The ring must be installed and operated with the following specifications.
Mounting shaft coefficient of thermal expansion at 20 °C
Installation temperature
Operating temperature range
Mechanical safe position (MSP)
The MSP is the maximum distance the scale might move from its installed position and will be undetected by the readhead.
RESM 'A' section - taper mounted
RESM 'A' and 'B' section - interference fit mounted
NOTE:
MSP × 360
Angular mechanical safe position =
π D × 1000
Where MSP = linear mechanical safe position (mm) and D = external diameter of RESM20 (mm)
1
Rings retained by interference fit only (unbolted) are not approved for use with the TONiC FS encoder system.
26
TONiC™ FS RESM20 Functional Safety installation guide and safety manual
20 μm
303 /304 stainless steel
15.5 ±0.5 μm/m/°C
15.5 ±0.5 μm/m/°C
20 ±5 °C
0 to 70 °C
±0.2 mm
1
±1 mm
Original instructions
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