Setting Sampling Times - Siemens SINAMICS S120 Function 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 13- 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.
13.12.3.5

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 13-14 Pulse
frequencies and current controller sampling times for servo control (Page 1026)" and
"Table 13-16 Pulse frequencies and current controller sampling times for vector control
(Page 1028)".
4. Close in the expert list of the Control Unit the cycle setting with p0009 = 0.
A startup is then performed. The speed controller sampling time and flux controller cycle
are adapted automatically. They therefore remain an integer multiple of the current
controller sampling time.
5. Then check the maximum speed p1082, the set pulse frequency p1800 and start an
automatic calculation of the controller data (p0340 = 4).
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Control type
Current controller sampling time / µs
Servo control
Vector control
Basic information about the drive system
13.12 System rules, sampling times and DRIVE-CLiQ wiring
p0115[0]
250
125
500
250
p0113
Pulse frequency / kHz
2
4
1
2
1013