Examples When Changing Sampling Times / Pulse Frequencies - Siemens SINAMICS S120 Function Manual

Basic information about the drive system
12.13 System sampling times
12.13.5

Examples when changing sampling times / pulse frequencies

Example: Changing the current controller sampling time from 62.5 µs with p0112
Preconditions:
● Maximum 2 drives, booksize format
● Servo motor control type
Procedure:
1. p0009 = 3 (not for offline operation).
2. Switch to the first servo drive object.
3. p0112 = 4.
4. Switch to the second servo drive object and repeat step 3.
5. p0009 = 0 (not for offline operation).
6. When STARTER is in offline mode: Download into the drive.
7. Save the parameter changes in a non-volatile fashion using the function "Copy RAM to
ROM" (see also the Commissioning Manual).
8. We recommend that the controller settings are recalculated (p0340 = 4).
Example: Changing the pulse frequency with p0113
Preconditions:
● STARTER is in the online mode.
Assumption:
● A TB30 has been installed.
● Servo motor control type
Procedure:
1. p0009 = 3 (not for offline operation).
2. Switch to the first servo drive object.
3. p0112 = 0.
4. Enter the required minimum pulse frequency in p0113.
636
If this conflicts with rule 1 for setting the sampling times ("The current controller sampling
times of the drive objects (DOs) and the sampling times of the inputs/outputs of the
Control Unit, TM, and TB modules must be an integer multiple of 1.25 µs."), an alarm is
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions