Siemens SINUMERIK 810D Configuration Manual page 73

07.96
12.95
Absolute (EnDat)
Singleturn, multiturn and linear absolute measuring systems with two 90
measuring degree offset sinusoidal voltage signals A and B and an EnDat interface.
e.g. multiturn encoder EQN 1325, singleturn encoder ECN 1313 or linear abso-
systems
lute measuring system LC181.
Transmission of incremental signals:
Amplitude A -- A
Amplitude B -- B
Transmission of serial signals:
Level:
Voltage supply:
Maximum supply current:
Max. evaluative encoder signal frequency: 350kHz
Note
At the frequency stated above, the signal amplitude must be
nominal amplitude and the deviation from the ideal phase displacement of 90_
between track A and B
Note the encoder signal frequency response.
Fig. 4-8
E Siemens AG, 2002. All rights reserved
SINUMERIK 810D Manual Hardware Configuration (PHC) - - 11.02 Edition
must be
±
A- -A
0
_
90 el.
360
B- -B
0
Signal chart for incremental signals at clockwise rotation
4 Description of the SINUMERIK 810D
4.3 Measuring system
Differential signals
A, A and B, B
typically 1 Vpp
typically 1 Vpp
Differential signals
data, data and clock, clock
Acc. to EIA 485
5V 5%
300mA
30_.
¦
_
el.
0
60% of the
²
4-71