User`s manual

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4 INSTALLATION AND WIRING

4.3 Mounting of Serial Absolute Synchronous Encoder

This section describes precautions for handling the serial absolute synchronous

encoder (Q170ENC).

(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 Q170ENC through a coupling. Ensure that excessive force

(greater than the permitted shaft load) is not applied to the shaft of Q170ENC.

Table 4.1 Permitted Shaft Loads

Gea

Coupling

Radial direction

Thrust direction

Up to 19.6N

Up to 9.8N

Permitted shaft load

Bearing

Q170ENC

Fig. 4.1 Example of Encoder Linked to a Gear

(2) Excessive load is applied to the shaft of Q170ENC by the large mounting errors in

eccentricity and angle of deviation As a result, it might damage the machine or

shorten extremely the life.

Minimize loads applied to the shaft such that they make within the permitted shaft

load range.