Siemens SINAMICS S120 Combi Equipment Manual page 89

Table 4- 14 Technical data of the encoder system supply
Encoder system supply
Voltage
Current
Encoder frequency that can be evaluated (f
A controller compares the encoder system supply voltage - sensed via the remote sense cables - with the reference
1)
supply voltage of the encoder system, and adjusts the supply voltage for the encoder system at the output of the drive
module until the required supply voltage is obtained directly at the encoder system.
Table 4- 15 Specification of TTL encoder systems that can be connected
Parameter
Signal level, high
1)
Signal level, low
1)
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)
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
2)
ALo-BHi
track B.
Further information on setting the "Zero pulse active time" can be found in the following:
3)
References: SINAMICS S120 Function Manual (FH1), tolerant encoder monitoring for SMC30
SINAMICS S120 Combi
Manual, (GH9), 07/2016, 6SL3097-4AV00-0BP5
Unit
V
A
) kHz
encoder
Designation
U
Hdiff
U
Ldiff
f
S
t
min
t
Lo
t
Hi
3)
Value
5 (with or without remote sense)
DC
0,35
DC
≤ 300
Threshold Min.
2
-5
-
100
640
640
S120 Combi Power Modules
4.3 Interface description
1)
Max. Unit
5 V
-2 V
300 kHz
- ns
(t - t )/2 ns
2)
ALo-BHi Hi
t - 2*t ns
Lo 2)
ALo-BHi
89