Siemens SINAMICS S110 Manual page 142

CU305 Control Units
7.3 Interface description
Encoder connection
We always recommend that bipolar encoders are used.
When using unipolar encoders the unused negative track signals can either be left
unconnected or connected to ground. This results in different switching thresholds.
Table 7- 11
Parameter
Permissible signal level in
bipolar mode
(TTL, SSI, HTL bipolar at
X23)
Permissible signal frequency
Required edge clearance
Permissible zero pulse (with T
= 1/f
Switching threshold in the
unipolar mode
AN_SSI_XDAT, BN, RN at X23
connected to M_Encoder
Operating points in unipolar
mode
AN_SSI_XDAT, BN, RN not
connected to X23
For the relevant parameters for setting the mode, see the SINAMICS S110 List Manual
1)
Other signal levels according to the RS422 specification.
2)
The absolute level of the individual signals varies between 0 V and V
3)
For the relevant parameters for setting the switching threshold, see the SINAMICS S110 List
4)
Manual
Note
Prefabricated cable for 5 V TTL encoder
If a 5 V TTL encoder (6FX encoder) is used, the connecting cable 6FX8002-2CR00-.... has
to be used.
142
Specification, measuring systems that can be connected
;
1)
2)3)
)
s
and signals
1)
and signals
1)
Designation Unit
U V
diff
f kHz
S
t ns
min
Length
s
Center of the Degrees
pulse posi-
tion
U V
(Switch)
V
U V
(Switch)
V
Threshold Min. Type
2.0
-
100
¼ · T
s
50 135
High 8.4 10.6
4)
Low 3.5 4.8
4)
High 9 11.3
4)
Low 5.9 7.9
4)
of the measuring system.
CC
Manual, 07/2015, 6SL3097-4AC10-0BP5
Max.
V
CC
500
-
¾ · T
s
220
13.1
6.3
13.8
10.2
SINAMICS S110