Siemens S120 - Page 328

Control Units, Control Unit Adapters and operating components
7.6 Control Unit Adapter CUA32
AC Drive
328 Manual, (GH6), 04/2014, 6SL3097-4AL00-0BP4
Table 7- 51 Specification of measuring systems that can be connected
Parameter
Designation
Threshold
Min.
Type
Max.
Unit
High signal level
(TTL bipolar at X220)
U
Hdiff
2 5 V
Low signal level
(TTL bipolar at X220)
U
Ldiff
-5 -2 V
High signal level
(HTL unipolar)
U
H
High
17
V
CC
V
Low
10
V
CC
V
Low signal level
(HTL unipolar)
U
L
High
0
7
V
Low
0
2
V
High signal level
(HTL bipolar)
U
Hdiff
3 V
CC
V
Low signal level
(HTL bipolar)
U
Ldiff
-V
CC
-3 V
High signal level
(SSI bipolar at X220)
U
Hdiff
2 5 V
Low signal level
(SSI bipolar at X220)
U
Ldiff
-5 -2 V
Signal frequency f
S
- 500 kHz
Edge clearance
t
min
100
-
ns
Zero pulse (with T
s
= 1/f
s
) Length ¼
·
T
s
¾
·
T
s
Center of the
pulse position
50 135 220 degrees
Note
We recommend that bipolar encoders are used.
When uni
-polar encoders are used, the 15-pin sub D connector should be opened and the
unused inverse sign
als (AN Pin14, BN Pin12 and RN Pin11) connected to ground (Pin7).