Siemens SIMODRIVE 611 Planning Manual page 60

3 Motor Selection, Position/Speed Sensing
3.4 Direct position sensing
3
3-60
Incremental systems with two squarewave signals A, B, displaced through
90 degrees and a reference mark(s) R SIMODRIVE 611A
Signal transfer:
Signal level:
Supply:
Max. supply current:
Max. encoder signal frequency
which can be evaluated:
Note
For the above specified max. encoder signal frequency, the distance between
the signal edges, tracks A and B must be ≥ 200 ns.
Observe the frequency characteristic of the encoder signals!
A–*A
0
90_el.
360_ el.
B–*B
0
Clear signal range
R–*R
0
Fig. 3-4 Signal characteristics for a clockwise direction of rotation
Differential signals
A, *A; B, *B and R, *R
acc. to RS422

5 V 5 % (also refer to Section
Encoder power supply)
300 mA
500 kHz
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01