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

Construction type
1 to 2 only n_ctrl
Booksize
1 to 4 only V/f
Chassis
1 to 2 n_ctrl and
400 V / ≤ 250 kW
V/f mixed
Booksize 3 to 4 only n_ctrl
5 to 6 only V/f
Chassis
3 to 4 n_ctrl and
400 V / ≤ 250 kW
V/f mixed
Chassis 1 to 3 only n_ctrl
> 250 kW 1 to 6 only V/f
690 V 1 to 3 n_ctrl and
V/f mixed
4 only n_ctrl
4 n_ctrl and V/f
mixed
Booksize > 6 only V/f
Chassis
Blocksize 1 to 2 only n_ctrl
1 to 4 only V/f
> 2 n_ctrl (min. 1)
> 4 only V/f
Caution
If a Power Module Blocksize is connected to a Control Unit, the sampling times of all vector drives are set according to the
rules for Power Modules Blocksize (only 250 µs or 500 µs possible).
12.12.5

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.
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Number
3 (Standard)
0 (Expert)
0 (Expert)
1 (xLow)
0 (Expert)
1 (xlow)
0 (Expert)
3 (Standard)
0 (Expert)
Basic information about the drive system
p0112 p0115[0]
250 µs
500 µs
375 µs (p0092 = 1)
400 µs (p0092 = 0)
500 µs (p0092 = 1)
400 µs (p0092 = 0)
500 µs
250 µs
500 µs
12.12 System sampling times
p1800
4 kHz
2 kHz
4 kHz
2 kHz
1.333 kHz
1.25 kHz
2 kHz
1.25 kHz
4 kHz
2 kHz
4 kHz
4 kHz
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