Specifications

4.3 Measuring system
4-64
Copyright © Siemens AG 2006
SINUMERIK 810D Equipment Manual Configuration CCU (PHC) – 03/2006 Edition
4.3.2 Encoder systems that can be evaluated
Incremental systems with two 90-degree offset sinusoidal voltages signals A, B
and a reference mark R.
E.g. ERN 1387 (motor measuring system)
Transfer: Differential signals
A, A
; B, B and R, R
Amplitude A – A typ. 1 Vpp
Amplitude B – B
typ. 1 Vpp
Amplitude R – R
typ. 0.5 Vpp...1 Vpp
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
R–R
0
0
0
90 el.
360 el.
Uniqueness range
0.5 V
0.5 V
Fig. 4-6 Signal curve of incremental encoders for clockwise rotation
Incremental
measuring
systems
4 Descri
p
tion of the SINUMERIK 810D