4.3 Measuring system
4-65
Copyright © Siemens AG 2006
SINUMERIK 810D Equipment Manual Configuration CCU (PHC) – 03/2006 Edition
Single-turn, multi-turn, and linear absolute measuring systems with two
90_ offset sinusoidal voltage signals A, B, and EnDat interface,
e.g. multi-turn encoder EQN 1325, single-turn encoder ECN 1313 or linear
absolute measurement system LC181.
Transfer incremental signals: Differential signals
A, A
and B, B
Amplitude A – A typ. 1 Vpp
Amplitude B – B
typ. 1 Vpp
Transfer serial signals: Differential signals
Data, Data
and Clock, Clock
Level: acc. to EIA 485
Power supply: 5 V ±5 %
Maximum supply current: 300 mA
Max. encoder signal frequency
that can be evaluated: 350 kHz
Note
For the above frequency, the signal amplitude must be
60 % of the typical
amplitude and the deviation of the phase offset from the ideal 90
between
track A and B must be
30
.
Pay attention to the frequency characteristic of the encoder signals.
A–A
B–B
0
0
90 el.
360 el.
Fig. 4-7 Signal curve for incremental tracks for a clockwise rotation
Absolute (EnDat)
measuring
systems
4 Descri
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