Siemens SINAMICS S120 Function Manual page 864

Basic information about the drive system
14.12 System rules, sampling times and DRIVE-CLiQ wiring
Cycle mix: Current controller sampling times
Base cycles for the isochronous PROFIBUS for a cycle mix with 125 μs
Table 14-24 Examples for cycle mixes for vector control
Cycle mix: Current controller sam‐
Base cycles for the isochronous PROFIBUS for a cycle mix with 250 μs
Note
When the current controller sampling time is set, the speed controller sampling time is
automatically preset:
● Servo control: Speed controller sampling time = current controller sampling time
● Vector control: Speed controller sampling time = current controller sampling time x 4
The preassignment of the speed controller sampling time can be changed to influence T
For example, the current controller sampling time can be increased from 800 µs to 1000 µs so
that T
862
[µs]
75.00 +125.00
62.50 +125.00
50.00 +125.00
37.50 +125.00
31.25 +125.00
pling times [µs]
500.00 +250.00
375.00 +250.00
312.50 +250.00
250.00 +250.00
218.75 +250.00
200.00 +250.00
187.50 +250.00
175.00 +250.00
156.25 +250.00
150.00 +250.00
137.50 +250.00
125.00 +250.00
can be set to be a multiple of 1000 µs.
mapc
Base cycle for T
375
125
250
750
125
Base cycle for T , T Base cycle for T
i o
[µs]
500
750
1250
250
1750
1000
750
1750
1250
750
2750
250
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
, T [µs] Base cycle for T
i o
750
250
250
750
250
Base cycle for T
dp
[µs] [µs]
500 2000
750 3000
1250 5000
250 1000
1750 7000
1000 4000
750 3000
1750 7000
1250 5000
750 3000
2750 11000
250 1000
Drive functions
, T [µs]
dp mapc
mapc
.
mapc