Mounting The Serial Absolute Synchronous Encoder - Mitsubishi Electric A173UHCPU User Manual

3. MOUNTING AND WIRING

3.4 Mounting the Serial Absolute Synchronous Encoder

Gear
Bearing
Fig. 3.1 Example of Encoder Linked to a Gear
Precautions when using a MR-HENC serial absolute synchronous encoder.
(1) If the serial absolute synchronous encoder is linked to a chain, timing belt, or
gears, the machine rotating shaft should be supported by a separate bearing
and connected to MR-HENC through a coupling. Ensure that excessive force
(greater than the permitted shaft load) is not applied to the encoder.
MR-HENC
Coupling
(2) Large errors in eccentricity and angle of deviation during mounting can apply
an excessive force to the MR-HENC shaft, which can cause deterioration in
performance drastically reduce encoder life.
Minimize loads applied to the shaft such that they lie within the permitted shaft
load range. The permitted shaft loads are shown in Fig. 3.2 for the
recommended coupling type.
Table 3.2 Permitted Values for Coupling Mounting Errors
Eccentricity
Angle of deviation
Axial displacement
Table 3.1 Permitted Shaft Loads
Radial Direction
Permitted shaft
load
0.2mm
(0.008 inch)
max.
3 − 7
Thrust Direction
98N max. 49N max.
1.5° max.
0.5mm
(0.02 inch)
max.