Siemens SINAMICS S120 - Default Settings for the Sampling Times

Appendix
A.4 System rules, sampling times and DRIVE-CLiQ wiring
Commissioning with Startdrive
208 Commissioning Manual, (IH3), 07/2016, 6SL3097-4AA10-0BP0
Servo control
● A current controller sampling time between 31.25 µs and 250 µs can be set for servo
drives (31.25 µs ≤ p0115[0] ≤ 250 µs).
● The fastest sampling time of a drive object in the servo control mode is obtained as
follows:
– T
i
= 31.25 µs: Exactly one drive object in servo control
– T
i
= 62.5 µs: Max. 3 drive objects in servo control
– T
i
= 125 µs: Max. 6 drive objects in servo control
Safety functions
● Only Single Motor Modules are permitted for servo axes with a current controller cycle
T
IReg
≤ 62.5 μs with the "Safety sensorless" functionality.
A.4.3.2
Default settings for the sampling times
The sampling times of the functions are pre-assigned automatically when the drive is
configured.
These default settings are based on the selected mode (vector/servo control) and the
activated functions.
If isochronous mode is to be possible with a controller, before the automatic configuration,
parameter p0092 must be set to "1" in order that the sampling times are appropriately preset.
If isochronous operation is not possible due to incorrect sampling time settings, an
appropriate message will be output (A01223, A01224).
If the application requires a change of the preset sampling times, they can be set using
parameters p0112 and p0113 or directly using p0115, p0799 and p4099.
Note
Recommendation
Only appropriately qualified experts should change the sampling time
s set as default values.