Siemens SINAMICS G120 List Manual page 191

p1247[0...n] Vdc_min controller dynamic factor (kinetic buffering) / Vdc_min dyn_factor
PM230 Access level: 3
PM230_STO
Can be changed: U, T
PM240
Unit group: -
Min
1 [%]
Description: Sets the dynamic factor for the Vdc_min controller (kinetic buffering).
100% means that p1250, p1251, and p1252 (gain, integral time, and rate time) are used corresponding to their basic
settings and based on a theoretical controller optimization.
If subsequent optimization is required, this can be carried out using the dynamic factor. In this case p1250, p1251,
p1252 are weighted with the dynamic factor p1247.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
p1249[0...n] Vdc_max controller speed threshold / Vdc_max n_thresh
PM230 Access level: 3
PM230_STO
Can be changed: U, T
PM240
Unit group: 3_1
Min
0.00 [rpm]
Description: Sets the lower speed threshold for the Vdc_max controller.
When this speed threshold is undershot, the Vdc_max control is switched out and the speed is controlled using the
ramp-function generator.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Note: For fast braking where the ramp-function generator tracking was active, it is possible to prevent the drive rotating in
the opposite direction by increasing the speed threshold and setting a final rounding-off time in the ramp-function
generator (p1131). This is supported using a dynamic setting of the speed controller.
p1250[0...n] Vdc controller proportional gain / Vdc_ctrl Kp
PM230 Access level: 3
PM230_STO
Can be changed: U, T
PM240
Unit group: -
Min
0.00
Description: Sets the proportional gain for the DC-link voltage controller (Vdc_min controller, Vdc_max controller).
Dependency: The effective proportional gain is obtained taking into account p1243 (Vdc_max controller dynamic factor) and the
DC link capacitance of the power unit.
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
p1251[0...n] Vdc controller integral time / Vdc_ctrl Tn
PM230 Access level: 3
PM230_STO
Can be changed: U, T
PM240
Unit group: -
Min
0 [ms]
Description: Sets the integral time for the DC-link voltage controller (Vdc_min controller, Vdc_max controller).
Dependency: The effective integral time is obtained taking into account p1243 (Vdc_max controller dynamic factor).
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Note: p1251 = 0: The integral component is de-activated.
SINAMICS G120 Control Units CU240B-2/CU240E-2
List Manual (LH11), 01/2016, A5E33839529
Calculated: p0340 = 1,3,4
Scaling: -
Unit selection: -
Max
10000 [%]
Calculated: p0340 = 1
Scaling: -
Unit selection: p0505
Max
210000.00 [rpm]
Calculated: -
Scaling: -
Unit selection: -
Max
100.00
Calculated: -
Scaling: -
Unit selection: -
Max
10000 [ms]
2 Parameters
2.2 List of parameters
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6220
Factory setting
300 [%]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
10.00 [rpm]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
1.00
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6220
Factory setting
0 [ms]
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