Siemens SINAMICS G120D CU240D-2 DP Manual page 237

Note: This parameter is ineffective for sensorless vector control. In this case, p1727 is always used. If p1726 is set to 0,
then the quadrature de-coupling is de-activated. The integral component of the Isd current controller remains
effective in the complete speed control range.
For the closed-loop control of synchronous motors, this parameter is used to scale the current controller de-coupling.
p1727[0...n] Quadrature arm decoupling at voltage limit scaling / TrnsvDecplVmaxScal
Access level: 4
Can be changed: U, T
Unit group: -
Min
0.0 [%]
Description: Sets the scaling of quadrature arm decoupling when the voltage limit is reached.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
r1728 De-coupling voltage in-line axis / U_dir-axis_decoupl
Access level: 4
Can be changed: -
Unit group: 5_1
Min
- [Vrms]
Description: Displays the actual output of the quadrature channel de-coupling for the d axis.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
r1729 De-coupling voltage quadrature axis / U_quad_decoupl
Access level: 4
Can be changed: -
Unit group: 5_1
Min
- [Vrms]
Description: Displays the actual output of the quadrature channel de-coupling for the q axis.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
p1730[0...n] Isd controller integral component shutdown threshold / Isd ctrl Tn shutd
Access level: 4
Can be changed: U, T
Unit group: -
Min
30 [%]
Description: Sets the speed threshold for de-activating the integral component of the Isd controller.
The d current controller is only effective as P controller for speeds greater than the threshold value. Instead of the
integral component, the quadrature arm decoupling is effective.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
Warning: For settings above 80%, the d current controller is active up to the field weakening limit. When operated at the
voltage limit, this can result in an unstable behavior. In order to avoid this, the dynamic voltage reserve p1574 should
be increased.
Note: The parameter value is referred to the synchronous rated motor speed.
SINAMICS G120D
List Manual (LH14), 01/2016, A5E33842313
Calculated: -
Scaling: -
Unit selection: -
Max
200.0 [%]
Calculated: -
Scaling: p2001
Unit selection: p0505
Max
- [Vrms]
Calculated: -
Scaling: p2001
Unit selection: p0505
Max
- [Vrms]
Calculated: p0340 = 1,3,4
Scaling: -
Unit selection: -
Max
150 [%]
2 Parameters
2.2 List of parameters
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6714
Factory setting
50.0 [%]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
- [Vrms]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
- [Vrms]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: -
Factory setting
30 [%]
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