Rules For Setting The Sampling Time - Siemens SINAMICS S120 Function Manual

Basic information about the drive system
12.13 System sampling times
When commissioning is exited (p0009 = p0010 = 0), the effective pulse frequency (p1800) is
appropriately pre-assigned, depending on p0113, and can be subsequently modified.
Setting the sampling times using p0115
If sampling times are required, which cannot be set using p0112 1, then the sampling times
can be directly set using p0115. To do so, p0112 must be set to 0 (Expert).
If p0115 is changed online, then the values of higher indices are automatically adapted.
We do not recommend that p0115 is changed when STARTER is in the offline mode. The
reason for this is that if the parameterization is incorrect, then the project download is
interrupted.
12.13.3

Rules for setting the sampling time

The following rules apply when setting the sampling times:
1. The current controller sampling times of the drive objects (DOs) and the sampling times
2. The sampling times (p0115[0] and p4099) of all components that are connected to a
3. The sampling times of the inputs/outputs (4099[0...2]) of a TB30 must be an integer
4. When Safety Integrated Extended Functions are used (see Safety Integrated Function
5. For Active Line Modules (ALM) in booksize format, only a current controller sampling time
6. For ALMs in chassis format, only a current controller sampling time of 250.0 µs or
7. For Basic Line Modules (BLM), only a current controller sampling time of 2000 µs can be
8. For Motor Modules in chassis format, a current controller sampling time of minimum 250
9. For Motor Modules in blocksize format (PM340), a current controller sampling time of
632
of the inputs/outputs of the Control Unit, TM and TB modules must be a multiple integer
of 1.25 µs.
DRIVE-CLiQ line must be integrally divisible by one another. If the current controller
sampling time on a DO has to be changed to another pattern that does not match the
other DOs on the DRIVE-CLiQ line, the following options are available:
– Reconnect the DO to a different, separate DRIVE-CLiQ line.
– Also change the current controller sampling time and the sampling time of the
inputs/outputs of the DOs not involved so that they again fit into the time grid.
multiple of the current controller sampling time (p0115[0]) of a drive object connected to a
DRIVE-CLiQ group.
– Sampling time of the inputs/outputs p4099[0...2]: for TB30
Manual), the sampling time of the current controller (p0115[0]) may be 62.5 μs, 125 μs or
250 μs.
of 125.0 µs or 250.0 µs can be set.
400.0 µs / 375.0 µs (375 µs when p0092 = 1) can be set.
set.
µs can be set (250 µs ≤ p0115[0] ≤ 500 µs).
62.5 µs, 125.0 µs, 250.0 µs, or 500.0 µs can be set (only pulse frequencies in multiples of
2 kHz permitted).
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions