3
05.01
3.4 Direct position sensing
3-71
©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
Incremental signals with two square wave signals A, B offset by 90 de-
grees and reference mark(s) R SIMODRIVE 611 universal HRS/
SIMODRIVE universal HRS E
Transfer:
Differential signals
A, *A; B, *B and R, *R
Signal level:
According to RS422
Power supply:
5 V
5% (also refer to Chapter 3.4.2
Encoder power supply)
Max. power supply current:
Max. 300 mA
Max. encoder signal frequency
that can be evaluated:
420 kHz
Note
For the above specified max. encoder signal frequency, the edge clearance
between track A and B must be
≥
200 ns.
Observe the frequency characteristic of the encoder signals!
A–*A
B–*B
R–*R
0
0
0
90
el.
360
el.
Range of uniqueness
Fig. 3-5
Signal characteristic for a clockwise direction of rotation
3 Motor Selection, Position/Speed Sensing
05.08