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

Basic information about the drive system
12.12 System sampling times and number of controllable drives
Setting the sampling times
If sampling times are required which cannot be set using p0112 > 1, then you can directly set
the sampling times 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.
12.12.3

Rules for setting the sampling time

The following rules apply when setting the sampling times:
● The current controller sampling times of the drive objects (DOs) and the sampling times
● The sampling times of the inputs/outputs (p4099[0...2]) of a TB30 must be an integer
● When Safety Integrated Extended Functions are used (see Safety Integrated Function
● For Active Line Modules (ALM) in booksize format, only a current controller sampling time
● For Active Line Modules (ALM) in chassis format, only a current controller sampling time
● For Basic Line Modules (BLM), only a current controller sampling time of 2000 µs can be
● For Motor Modules in chassis format, a current controller sampling time of minimum 125
● For Motor Modules in blocksize format, a current controller sampling time of 62.5 µs,
● When a chassis unit is connected to a DRIVE-CLiQ line, the smallest current controller
● A current controller sampling time between 31.25 µs and 250.0 µs can be set for SERVO
914
of the inputs/outputs of the Control Unit, TM and TB modules must be a multiple integer
of 125 µs. The DRIVE-CLiQ lines with servo-controlled axes with 31.25 μs or 62.5 µs
controller sampling time are an exception.
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]) must be 31.25 μs, 62.5 μs,
125 μs, 250 μs, 375 μs, 400 μs or 500 μs.
of 125.0 µs or 250.0 µs can be set.
of 250.0 µs or 400.0 µs / 375.0 µs (375 µs when p0092 = 1) can be set. The same current
controller sampling times can be set for Smart Line Modules (SLM).
set.
µs can be set (125 µs ≤ p0115[0] ≤ 500 µs). This applies to the servo control and vector
control.
125.0 µs, 250.0 µs or 500.0 µs can be set (only pulse frequencies in multiples of 2 kHz
are permissible).
sampling time must be at least 125 µs. This only applies for servo control.
Example:
Mixture of chassis and booksize units on a DRIVE-CLiQ line.
drives (31.25 µs ≤ p0115[0] ≤ 250.0 µs).
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions