Incremental interface
TR-Electronic GmbH 2016, All Rights Reserved
Printed in the Federal Republic of Germany
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TR - ECE - BA - GB - 0120 - 13
10/23/2019
The measuring system acquires the angular information from the connected process
via the rotation of the shaft. A pulse disk is fixed to the shaft; this acquires the angular
increments with a defined number of periods per revolution. A scanning unit with
integrated optoelectronics generates electrical signals and outputs signal periods,
which can be processed in a signal conditioner afterwards.
The resolution of the measuring system is defined by the number of light/dark
segments (pulse number per revolution) on the pulse disk. A signal sequence of e.g.
1024 periods is output during one revolution. To evaluate the counting direction, a 2nd
signal sequence with a 90° phase offset is output for the control.
The counter of an external control can be reset with an additional zero pulse, and the
mechanics - control reference point can thus be defined.
7.1 Variant 1, analog incremental signals (SIN/COS)
The number of periods / revolution is dependent on the device variant. Resolutions of
1024, 2048 and 4096 periods / revolution are supported.
Measuring the signals against 0 V gives the following signal curve:
Figure 9: Signal curve with clockwise direction of rotation looking at the flange connection
