Siemens SINAMICS S120 Manual page 264

Encoder system connection
9.6 Sensor Module Cabinet-Mounted SMC30
6SL3055-0AA00-5CA2
SSI baud rate
Protective ground conductor connection
Ventilation clearances, above/below
Weight
A controller compares the encoder system supply voltage - sensed via the Remote Sense cables - with the reference supply
1)
voltage of the encoder system, and adjusts the supply voltage for the encoder system at the output of the sensor module until
the required supply voltage is obtained directly at the encoder system (only for 5 V encoder system power supply). Remote
Sense only to X520.
See the diagram "Maximum cable length depending on the SSI baud rate for SSI encoders"
2)
Connectable encoder systems
Table 9-19 Specification of encoder systems that can be connected
Parameter
High signal level
(TTL bipolar at X520 or X521/X531)
Low signal level
(TTL bipolar at X520 or X521/X531)
High signal level
(HTL unipolar)
Low signal level
(HTL unipolar)
High signal level
(HTL bipolar)
2)
Low signal level
(HTL bipolar)
2)
High signal level
(SSI bipolar at X520 or X521/X531)
Low signal level
(SSI bipolar at X520 or X521/X531)
Signal frequency
Edge clearance
"Zero pulse inactive time"
(before and after A=B=high)
"Zero pulse active time"
(while A=B=high and beyond)
Other signal levels according to the RS 422 standard.
1)
The absolute level of the individual signals varies between 0 V and V
2)
Only with Article No. 6SL3055-0AA00-5CA2 and firmware version 2.5 SP1 or higher can this value be configured using
3)
software. For older firmware releases and Article Nos. less than 6SL3055-0AA00-5CA2, the "low" threshold applies.
t is not a specified value, but is the time between the falling edge of track A and the next but one rising edge of track B.
4)
ALo-BHi
Additional information on setting the "Zero pulse active time" can be found in the manual: SINAMICS S120, Function Manual,
5)
"Tolerant encoder monitoring for SMC30".
262
Unit
kBd
At the housing with M4 screw
mm
kg
Designation
U
Hdiff
1)
U
Ldiff
1)
U
3)
H
U
3)
L
U
Hdiff
U
Ldiff
U
Hdiff
1)
U
Ldiff
1)
f
S
t
min
t
Lo
t
Hi
5)
Value
100 - 1000
2)
50
0.41
Threshold Min.
- 2
- -5
High 17
Low 10
High 0
Low 0
- 3
- -V
CC
- 2
- -5
- -
- 100
- 640
- 640
of the encoder system.
CC
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
Max. Unit
5 V
-2 V
V V
CC
V V
CC
7 V
2 V
V V
CC
-3 V
5 V
-2 V
500 kHz
- ns
(t - t )/2 ns
4)
ALo-BHi Hi
t - 2 t ns
4)
ALo-BHi Lo