Siemens SINAMICS G List Manual page 170

Parameters
Parameter list
p1287[0...n] Vdc_min controller dynamic factor (kinetic buffering) (V/f) / Vdc_min dyn_factor
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: Functions
Min
1 [%]
Description: Sets the dynamic factor for the Vdc-min controller (kinetic buffering).
100 % means that p1290, p1291 and p1292 (gain, integral-action time and derivative-action time) are used corre-
sponding to their basic settings and based on a theoretical controller optimization.
If subsequent optimization is required, then this can be realized using the dynamic factor. In this case p1290,
p1291, p1292 are weighted with the dynamic factor p1287.
If several modules are connected to the DC link, then the dynamic factor must be increased corresponding to the
ratio of the additional capacitances to the capacitance of the module involved.
Note: The pre-setting of the dynamic factor is based on the power modules connected at DRIVE-CLiQ. It is assumed that
the power module, connected via DRIVE-CLiQ is also electrically connected to the DC link. If this is not the case,
then the dynamic factor must be optimized manually.
p1290[0...n] Vdc controller proportional gain (V/f) / Vdc_ctrl Kp
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: Functions
Min
0.00
Description: Sets the proportional gain for the Vdc controller (DC link voltage controller).
Note: The gain factor is proportional to the capacitance of the DC link. The parameter is preset to a value that is optimally
adapted to the capacitance of the individual motor module. The capacitances of the other power modules, which
are connected to the DC link, can be taken into account using the dynamic factor (p1287 or p1283).
p1291[0...n] Vdc controller integral action time (V/f) / Vdc_ctrl Tn
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: Functions
Min
0 [ms]
Description: Sets the integral action time for the Vdc controller (DC link voltage controller).
p1292[0...n] Vdc controller derivative-action time (V/f) / Vdc_ctrl t_deriv.
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: Functions
Min
0 [ms]
Description: Sets the derivative-action time constant for the Vdc controller (DC link voltage controller).
1-170
Data set: DDS
Units group: PERCENT
Max
10000 [%]
Data set: DDS
Units group: -
Max
100.00
Data set: DDS
Units group: TIME_M3
Max
1000 [ms]
Data set: DDS
Units group: TIME_M3
Max
1000 [ms]
 Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
Access level: 3
Function diagram: -
Unit selection: -
Factory setting
100 [%]
Access level: 3
Function diagram: 6320
Unit selection: -
Factory setting
1.00
Access level: 3
Function diagram: 6320
Unit selection: -
Factory setting
40 [ms]
Access level: 3
Function diagram: 6320
Unit selection: -
Factory setting
10 [ms]