Circulo 7
Value Inner Ring Outer Ring
A [mm] 0.5 ±0.20* 0.8 ±0.20*
B [mm] 0.56 ±0.14 0.26 ±0.14
C [mm] 2.94 ±0.13 3.24 ±0.13
* Note that dimension A and the respective tolerance are for informative purposes only.
This air gap is typically not accessible for measurement, nor can it be directly influenced by the design. Please
use dimension B or C as design criteria.
It is possible to obtain an air gap feedback directly from the encoder chip in OBLAC Drives using the Magnetic
ring distance checker feature. It can assist during the prototyping phase of the design. It computes the air
gap based on the ring’s magnetic field strength and recommends the next action.
Circulo 9
Value Inner Ring Outer Ring
A [mm] 0.4 ±0.20* 0.75 ±0.20*
B [mm] 0.66 ±0.14 0.31 ±0.14
C [mm] 2.84 ±0.13 3.19 ±0.13
* Note that dimension A and the respective tolerance are for informative purposes only.
This air gap is typically not accessible for measurement, nor can it be directly influenced by the design. Please
use dimension B or C as design criteria.
It is possible to obtain an air gap feedback directly from the encoder chip in OBLAC Drives using the Magnetic
ring distance checker feature. It can assist during the prototyping phase of the design. It computes the air
gap based on the ring’s magnetic field strength and recommends the next action.
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