YASKAWA SGD7S Product Manual page 187

E-7s servopack with analog voltage/pulse train references

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Table of Contents

5.16 Electronic Gear Settings

5.16.1 Electronic Gear Ratio Settings

 Feedback Resolution of Linear Encoder

The linear encoder pitches and resolutions are given in the following table.

Calculate the electronic gear ratio using the values in the following table.

This is the model of the Serial Converter Unit.

This is the model of the Head with Interpolator.

This is the model of the Interpolator.

If you use an encoder pulse output with this linear encoder, the setting range of the encoder output resolution

(Pn281) is restricted. Refer to the following section for details on the encoder output resolution (Pn281).

Linear Encoder

Manufacturer

LIC4100 Series

ST781A/ST781AL

ST782A/ST782AL

ST783/ST783AL

ST784/ST784AL

ST788A/ST788AL

ST789A/ST789AL

6.8.2 Setting for the Encoder Divided Pulse Output on page 6-51

You can calculate the resolution that is used inside the SERVOPACK (i.e., the travel distance per

feedback pulse) with the following formula.

Resolution (travel distance per feedback pulse) =

The SERVOPACK uses feedback pulses as the unit to control a Servomotor.

Linear encoder pitch

Model of Serial Con-

verter Unit or Model of

Resolution of Serial Converter Unit or linear encoder

Linear encoder pitch

=Distance for one cycle of the analog voltage

feedback signal from the linear encoder

Resolution Resolution

Interpolator

Linear encoder pitch

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