3. After the download has successfully completed, you will be able to determine all the current
and speed controller clock cycles of the drives from the drives' expert lists.
p0115[0] current controller cycle clock
p0115[1] speed controller cycle clock
4. If required, it is now possible to optimize the T
MAPC
, T
DP
, T
I
, and T
O
times in HW Config (see
the procedure in Scenario 1).
Table 7-5
Recommended cycle clock settings in HW Config
Setting
Explanation
T
DP
= 3.0 ms
T
DP
= DP cycle time
T
I
= T
O
= 1.5 ms
T
I
= time of actual value acquisition
T
O
= time of setpoint transfer
T
MAPC
= 3.0 ms
T
MAPC
= master application cycle time
Setting the sampling times
Automatic setting
On SIMOTION D4x5‑2, if p0112 = 3 (default) is set, the sampling times in the p0115 (current
controller, speed controller, …) are automatically set after a project download and may
therefore differ from the offline values. The sample times depend, e.g. on the number of vector
drives and the Power Module used (e.g. chassis). If the sampling times have been adapted
by the system, p0112 = 0 (expert) is set automatically.
Manual setting
With p0112 = 1…5, the sampling times (current controller, speed controller, …) can be selected.
If sampling times are required which cannot be set using p0112 > 0, then you can directly set
the sampling times using p0115. To do so, p0112 must be set to "0" (Expert).
p0112 = 0 enables the individual sampling times to be adjusted in p0115. Moreover, with this
setting, the system does not change the current controller sampling time automatically.
Output cams / measuring inputs with vector drives
With vector drives, the cycle clock ratios (current controller cycle clock, speed controller cycle
clock, sampling time of the I/Os, etc.) depend on the number of vector drives, or with chassis
units also on the device type used.
Note the information in Section Current controller cycle clocks <> 125 µs / use of output cams
and measuring inputs (Page 239).
Additional references
Additional information on quantity structures and cycle clock settings can be found in the
SINAMICS S120 Function Manual.
Commissioning (software)
7.5 Additional information on configuring the SINAMICS Integrated
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
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