Sine/cosine encoder, features, signal forms and offset voltage

Question:
Which features do the sine/cosine encoders (rotary encoders, linear encoders) require, so that they can be operated at the 9300 via encoder input X8?
What are the differences to the ECS servo system?

Answer:
The sine/cosine signals consist of a sine signal voltage and an offset voltage each.
As described in the 9300 operating instructions in chapter 'Feedback systems' in case of a 9300 the signals of the sine/cosine tracks must have an amplitude of 1 VSS ± 0.2 V.
For the offset voltage (RefSIN, RefCOS) a voltage of +2.5 V is indicated.

9300 drive controller:
SineCosine signals with offset voltages of  0...+2.5 V can also be processed. E. g. they are used by Heidenhain company for LS486 linear scales.

ECS servo system:
In case of ECS the encoder input only permits the application of sine/cosine signals with offset voltages +2.5 V.

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