Siemens SINAMICS G120 List Manual page 273

Note: It only makes sense to activate this function if the dynamic response requirements of the speed controller are low.
In order to avoid oscillations, if required, the speed controller parameters should be adapted (increase Tn, reduce
Kp).
Further, the smoothing time of the flux setpoint filter (p1582) should be increased.
p1582[0...n] Flux setpoint smoothing time / Flux setp T_smth
Access level: 3
Can be changed: U, T
Unit group: -
Min
4 [ms]
Description: Sets the smoothing time for the flux setpoint.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
r1583 Flux setpoint smoothed / Flux setp smooth
Access level: 4
Can be changed: -
Unit group: -
Min
- [%]
Description: Displays the smoothed flux setpoint.
The value is referred to the rated motor flux.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
p1584[0...n] Field weakening operation flux setpoint smoothing time / Field weak T_smth
Access level: 4
Can be changed: U, T
Unit group: -
Min
0 [ms]
Description: Sets the smoothing time for the flux setpoint in the field-weakening range
Recommendation: Smoothing should be especially used if there is no regenerative feedback into the line supply. This means that the
DC link voltage can quickly increase in regenerative operation
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
Note: Only the flux setpoint rise is smoothed
p1586[0...n] Field weakening characteristic scaling / Field weak scal
Access level: 4
Can be changed: U, T
Unit group: -
Min
80.0 [%]
Description: Sets the scaling of the precontrol characteristic for the start of field weakening.
For values above 100 % and for partial load situations, the field weakening starts at higher speeds.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
Note: If the start of field weakening is shifted to lower speeds, then the voltage reserve is increased for partial load
situations.
If the start of field weakening is shifted to higher speeds, the voltage reserve is appropriately reduced so that for fast
load changes, it can be expected that this will have a negative impact on the dynamic performance.
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
Calculated: p0340 = 1,3
Scaling: -
Unit selection: -
Max
5000 [ms]
Calculated: -
Scaling: PERCENT
Unit selection: -
Max
- [%]
Calculated: p0340 = 1,3
Scaling: -
Unit selection: -
Max
20000 [ms]
Calculated: -
Scaling: -
Unit selection: -
Max
120.0 [%]
2 Parameters
2.2 List of parameters
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6722, 6724
Factory setting
15 [ms]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: 6722, 6723, 6724
Factory setting
- [%]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6722
Factory setting
0 [ms]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
100.0 [%]
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