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2 Parameters
2.2 List of parameters
SINAMICS G120C
138 List Manual (LH13), 04/2014, A5E33840768B AA
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.
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.
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.
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.
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).
Note: p1251 = 0: The integral component is de-activated.
Description: Sets the rate time constant for the DC-link voltage controller (Vdc_min controller, Vdc_max controller).
Dependency: The effective rate time is obtained taking into account p1243 (Vdc_max controller dynamic factor).
p1247[0...n] Vdc_min controller dynamic factor (kinetic buffering) / Vdc_min dyn_factor
Access level: 3 Calculated: p0340 = 1,3,4 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6220
Min Max Factory setting
1 [%] 10000 [%] 300 [%]
p1249[0...n] Vdc_max controller speed threshold / Vdc_max n_thresh
Access level: 3 Calculated: p0340 = 1 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: 3_1 Unit selection: p0505 Func. diagram: -
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 10.00 [rpm]
p1250[0...n] Vdc controller proportional gain / Vdc_ctrl Kp
Access level: 4 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0.00 100.00 1.00
p1251[0...n] Vdc controller integral time / Vdc_ctrl Tn
Access level: 4 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6220
Min Max Factory setting
0 [ms] 10000 [ms] 0 [ms]
p1252[0...n] Vdc controller rate time / Vdc_ctrl t_rate
Access level: 4 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6220
Min Max Factory setting
0 [ms] 1000 [ms] 0 [ms]
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