Setting Sampling Times - Siemens SINAMICS S120 Function Manual

Basic information about the drive system
14.12 System rules, sampling times and DRIVE-CLiQ wiring
● Positioner (p0115[5])
● Technology controller (p0115[6])
The performance levels range from xLow to xHigh. Details of how to set the sampling times are
given in the SINAMICS S120/S150 List Manual.
Setting the pulse frequency using the commissioning tool in online operation
Enter the minimum pulse frequency in p0113. For isochronous operation (p0092 = 1), you can
only set the parameter so that a resulting current controller sampling time with an integer
multiple of 125 μs is obtained. The required pulse frequency can be set after commissioning
(p0009 = p0010 = 0) in p1800.
Table 14-12 Pulse frequency for isochronous operation
When commissioning is exited (p0009 = p0010 = 0), the effective pulse frequency (p1800) is
appropriately pre-assigned, depending on p0113, and can be subsequently modified.
14.12.4.5

Setting sampling times

If sampling times are required which cannot be set using p0112 > 1, you can directly set the
sampling times in expert mode using p0115.
If p0115 is changed online, then the values of higher indices are automatically adapted.
Note
Do not change the sampling times when the commissioning tool is in the offline mode, because
in this case if there is an incorrect parameterization, the project download is canceled.
Making and checking settings
1. Activate in the expert list of the Control Unit the drive base configuration with p0009 = 3.
2. In the expert list of the drive object, activate the expert mode with p0112 = 0.
3. Specify the current controller sampling time for the drive object as follows:
p0115[0] = current controller sampling time.
For the current controller sampling time, only use the values from "Table 14-14 Pulse
frequencies and current controller sampling times for servo control (Page 855)" and "Table
14-16 Pulse frequencies and current controller sampling times for vector control
(Page 857)".
844
Control type
Current controller sampling time
Servo control
Vector control
p0115[0]
250 µs
125 µs
500 µs
250 µs
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
p0113
Pulse frequency
2 kHz
4 kHz
1 kHz
2 kHz
Drive functions