Siemens SINAMICS S120 Function Manual page 913

Mixed operation of servo control and U/f open-loop control
In mixed operation with servo control and U/f control, one axis in servo control at 125 µs
uses exactly as much computing performance as two axes in U/f control at 500 µs. In
conjunction with servo control, a maximum of 11 axes are permitted (1 servo control plus 10
vector control U/f).
Table 12- 17 Number of axes for mixed servo control operation
Mixed operation of vector control and U/f open-loop control
In mixed operation with vector control and U/f control, one axis in vector control at 250 µs
uses exactly as much computing performance as two axes in U/f control at 500 µs. In
conjunction with vector control, a maximum of 11 axes are permitted (1 vector control plus
10 U/f control).
Table 12- 18 Number of axes for mixed vector control operation
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Number of axes in servo control
6 125 µs
5 125 µs
4 125 µs
3 125 µs
2 125 µs
1 125 µs
0
Number of axes in vector control
6 500 µs
5 500 µs
4 500 µs
3 500 µs
2 500 µs
1 500 µs
0
12.12 System sampling times and number of controllable drives
3 62.5 µs
2 62.5 µs
1 62.5 µs
0
3 250 µs
2 250 µs
1 250 µs
0
Basic information about the drive system
Number of axes in U/f control
0
2
4
6
8
10
12
Number of axes in U/f control
0
2
4
6
8
10
12
500 µs
500 µs
500 µs
500 µs
500 µs
500 µs
500 µs
500 µs
500 µs
500 µs
500 µs
500 µs
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