Siemens SINAMICS S120 - System Sampling Times and Number of Controllable Drives

Appendix
A.5 System rules, sampling times and DRIVE-CLiQ wiring
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
409
Pulse fre-
quency [kHz]
Current controller sampling time [µs]
500.0
375.0
312.5
250.0
218.75
200.0
187.5
175.0
156.25
150.0
137.5
125.0
6.666
-
-
-
-
-
-
-
-
-
X
-
-
6.4
-
-
X
-
-
-
-
-
X
-
-
-
6.0 X - - - - - - - - - - -
5.714
-
-
-
-
-
-
-
X
-
-
-
-
5.333
-
X
-
-
-
-
X
-
-
-
-
-
5.0
-
-
-
-
-
X
-
-
-
-
-
-
4.571
-
-
-
-
X
-
-
-
-
-
-
-
4.0
X
-
-
X
-
-
-
-
-
-
-
X
3.636
-
-
-
-
-
-
-
-
-
-
X
-
3.333
-
-
-
-
-
-
-
-
-
X
-
-
3.2
-
-
X
-
-
-
-
-
X
-
-
-
2.857
-
-
-
-
-
-
-
X
-
-
-
-
2.666
-
X
-
-
-
-
X
-
-
-
-
-
2.5
-
-
-
-
-
X
-
-
-
-
-
-
2.285
-
-
-
-
X
-
-
-
-
-
-
-
2.0
X
-
-
X
-
-
-
-
-
-
-
-
1.6
-
-
X
-
-
-
-
-
-
-
-
-
1.333
-
X
-
-
-
-
-
-
-
-
-
-
1.0
X
-
-
-
-
-
-
-
-
-
-
-
A.5.5.3
System sampling times and number of controllable drives
Cycle times for V/f control
The following table lists the number of axes that can be operated with a Control Unit in the
V/f control mode. The number of axes depends on the current controller sampling time:
Table A- 8 Sampling time setting for V/f control
Cycle times [µs]
Number
Motor/dir. measur-
ing systems
TM/TB
Current con-
troller
Speed controller
Drives
Infeed
500
2000
12
1 [250 μs]
- / -
3 [2000 μs]