Incremental Interface - Siko MSA501 Originalmontageanleitung

MSA501-S(SSI)
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Incremental interface

NOTICE
NOTICE
7 Incremental interface
For dimensioning the downstream electronics it shall be ensured that it is
correctly dimensioned for the set edge distance or counting frequency!
It should be noted that pulses with the widths of the set edge distance
may occur with sensor idleness (due to the internal interpolation proce-
dure).
In parallel with the SSI-interface, the LD version outputs speed-propor-
tional incremental signals which have the differential form in accordance
with RS422.
The incremental signals shall be terminated by means of terminating
resistors with 120 ... 150 ohm (see
Signal sequence
With an interpolation rate of 1000, the period of output signal corres-
ponds to -> 20 μm with an interpolation rate of 1000 (interpolation rate =
5000 -> 4 μm; interpolation rate = 500 -> 40 μm).
With the sensor being moved in the cable outlet direction, signal B will be
lagging in relation to signal A by 5 μm (A before B).
20 m
5 m
A
/A
B
/B
MSA501-S(SSI) · Date 06.06.2016 · Art. No. 85615 · Mod. status 152/16
Fig. 2).
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