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p1249[0...n]
Vdc_max controller speed threshold / Vdc_max n_thresh
Access level: 4
Can be changed: T, U
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.
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.
p1249[0...n]
Vdc_max controller speed threshold / Vdc_max n_thresh
G120X_DP
Access level: 3
(Vdc_max),
Can be changed: T, U
G120X_PN
Unit group: 3_1
(Vdc_max),
Min:
G120X_USS
(Vdc_max)
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.
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
Access level: 3
Can be changed: T, U
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.
p1251[0...n]
Vdc controller integral time / Vdc_ctrl Tn
Access level: 3
Can be changed: T, U
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).
Note
p1251 = 0: The integral component is deactivated.
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Calculated: CALC_MOD_ALL Data type: FloatingPoint32
Scaling: -
Unit selection: p0505
Max:
210000.00 [rpm]
Calculated: CALC_MOD_ALL Data type: FloatingPoint32
Scaling: -
Unit selection: p0505
Max:
210000.00 [rpm]
Calculated: -
Scaling: -
Unit selection: -
Max:
100.00
Calculated: -
Scaling: -
Unit selection: -
Max:
10000 [ms]
Parameters
7.2 Parameter list
Dynamic index: DDS, p0180
Function diagram: -
Factory setting:
10.00 [rpm]
Dynamic index: DDS, p0180
Function diagram: -
Factory setting:
10.00 [rpm]
Data type: FloatingPoint32
Dynamic index: DDS, p0180
Function diagram: -
Factory setting:
1.00
Data type: FloatingPoint32
Dynamic index: DDS, p0180
Function diagram: 6220
Factory setting:
0 [ms]
657
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