Vdc_Max Controller Switch-In Level / Vdc_Max On_Level; Vdc_Max Controller Dynamic Factor / Vdc_Max Dyn_Factor; Vdc_Min Controller Switch-In Level (Kinetic Buffering) - Siemens SINAMICS G150 Manual

2 Parameters
2.2 List of parameters
r1242

Vdc_max controller switch-in level / Vdc_max on_level

VECTOR_G (n/M) Can be changed: -
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: REL
Min
- [V]
Description: Displays the switch-in level for the Vdc_max controller.
If p1254 = 0 (automatic sensing of the switch-in level = off), then the following applies:
AC/AC device: r1242 = 1.15 * sqrt(2) * p0210
DC/AC device: r1242 = 1.15 * p0210
If p1254 = 1 (automatic sensing of the switch-in level = on), then the following applies:
r1242 = Vdc_max - 50.0 V (Vdc_max: Overvoltage threshold of the power unit)
r1242 = Vdc_max - 25.0 V (for 230 V power units)
Notice: If the activation level of the Vdc_max controller is already exceeded in the deactivated state (pulse inhibit) by the DC
link voltage, then the controller can be automatically deactivated (see F07401), so that the drive is not accelerated
the next time that it is activated.
Note: The Vdc_max controller is not switched back off until the DC-link voltage falls below the threshold 0.95 * r1242 and
the controller output is zero.
p1243[0...n]

Vdc_max controller dynamic factor / Vdc_max dyn_factor

VECTOR_G (n/M) Can be changed: U, T
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: REL
Min
1 [%]
Description: Sets the dynamic factor for the DC link voltage controller (Vdc_max controller).
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 p1243.
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 units connected to DRIVE-CLiQ. It is assumed that the
power units connected via DRIVE-CLiQ are also electrically connected to the DC link. If this is not the case, then the
dynamic factor must be optimized manually.
p1245[0...n] Vdc_min controller switch-in level (kinetic buffering) / Vdc_min on_level
VECTOR_G (n/M) Can be changed: U, T
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: REL
Min
65 [%]
Description: Sets the switch-in level for the Vdc-min controller (kinetic buffering).
The value is obtained as follows:
AC/AC device: r1246[V] = p1245[%] * sqrt(2) * p0210
DC/AC device: r1246[V] = p1245[%] * p0210
Dependency: Refer to: p0210
Warning: An excessively high value may adversely affect normal drive operation.
The values up to 150 % are intended for operating modes p1240 = 5, 6.
334
Calculated: -
Dyn. index: -
Units group: -
Scaling: p2001
Max
- [V]
Calculated: CALC_MOD_CON
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
10000 [%]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
150 [%]
List Manual (LH2), 04/2014, A5E03263479A
Access level: 3
Func. diagram: 6220
Unit selection: -
Expert list: 1
Factory setting
- [V]
Access level: 3
Func. diagram: 6220
Unit selection: -
Expert list: 1
Factory setting
100 [%]
Access level: 3
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
76 [%]
SINAMICS G130/G150