Siemens SIMOTION Equipment Manual page 56

Interfaces
4.5 Encoder interface (HTL/TTL/SSI)
NOTICE
Motor overheating due to an incorrectly connected KTY temperature sensor
A sensor connected with the incorrect polarity cannot detect the motor overheating.
Connect the KTY temperature sensor with the correct polarity.
For more information on the temperature sensors and how to use them, see the SINAMICS
S120 Commissioning Manual, in Chapter Temperature sensors for SINAMICS components.
Note
There are two ways of connecting the temperature sensor:
1. Via X120, terminal 1 and 2
2. Via X23, pins 1 and 8
Table 4-15 Specification of measuring systems that can be connected
Parameter
Permissible signal level in the bipolar mode
(parameter p0405.1=1);
(TTL, SSI, HTL bipolar at X23)
Permissible signal frequency
Required edge clearance
Permissible zero pulse (with T
Switching threshold in the unipolar mode
(parameter p0405.0=0) and signals
AN_SSI_XDAT, BN, RN at X23 connected to
M_Encoder 3)
Switching threshold in the unipolar mode
(parameter p0405.0=0) and signals
AN_SSI_XDAT, BN, RN not connected to X23
Other signal levels according to the RS422 specification.
1)
The absolute level of the individual signals varies between 0 V and VCC of the measuring system.
2)
See SINAMICS S120/S150 List Manual for setting the mode.
3)
See SINAMICS S120/S150 List Manual for setting the threshold.
4)
Note
We recommend that bipolar encoders are used
When using unipolar encoders, the unused negative track signals can either be connected or
connected to ground. This results in different switching thresholds.
56
Designation
U
diff
1), 2)
f
S
t
min
= 1/f ) Length
s s
Center of the pulse posi‐
tion
U
(Schalt)
U
(Schalt)
Threshold Min.
2,0
-
100
¼ · T
s
50
High 8,4
4)
(p0405.4=1)
Low 3,5
(p0405.4=0)
High 9
4)
(p0405.4=1)
Low 5,9
(p0405.4=0)
Equipment Manual, 07/2021, A5E33446720B
Type Max. Unit
V V
CC
500 kHz
- ns
¾ · T
s
135 220 Degrees
10,6 13,1 V
4,8 6,3 V
11,3 13,8 V
7,9 10,2 V
SIMOTION D410-2