3
05.01
3.4 Direct position sensing
3-72
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 05/2008 Edition
Singleturn, multiturn and linear absolute systems with two sinusoidal volt-
age signals A, B offset by 90 degrees and EnDat interface
Transfer, incremental signals: Differential signals
A, *A and B, *B
Amplitude A – *A 1 Vpp + +20% –25%
Amplitude B – *B 1 Vpp + 20% –25%
Transfer, serial signals: Differential signals
data, *data and clock, *clock
Signal level: acc. to EIA 485
Power supply: 5 V ± 5% (also refer to Chapter 3.4.2
Encoder power supply)
Max. power supply current: 300 mA
Max. processable enc. signal frequency: 200 kHz standard module/
420 kHz (as of SW 5.1.14)
1)
350 kHz
Note
For the above specified max. encoder signal frequency, the signal amplitude
must be
60% of the nominal amplitude and the deviation of the phase shift
from the ideal 90
between track A and B must be 30
.
Observe the frequency characteristic of the encoder signals.
A–*A
B–*B
0
0
90 el.
360 el.
Fig. 3-4 Signal curve of incremental tracks for clockwise rotation
1) Refer to parameterizable encoder limit frequency (as of SW 5.1.14)
3 Motor Selection, Position/S
eed Sensin
05.08
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