Vdc_Min Controller Response (Kinetic Buffering) (U/F; Vdc_Min Controller Speed Threshold (U/F) / Vdc_Min N_Thresh; Co: Vdc Controller Output (U/F) / Vdc_Ctrl Output; Open-Loop/Closed-Loop Control Operating Mode / Op/Cl-Lp Ctrl_Mode - Siemens SINAMICS G150 Manual

Notice: If a time threshold has been parameterized, the Vdc_max controller should also be activated (p1280 = 3) so that the
drive does not shut down with overvoltage when Vdc_min control is exited (due to the time violation) and in the event
of fault response OFF3. It is also possible to increase the OFF3 ramp-down time p1135.
p1296[0...n] Vdc_min controller response (kinetic buffering) (U/f / Vdc_min response
VECTOR_G Can be changed: U, T
Data type: Integer16
P-Group: Functions
Not for motor type: -
Min
0
Description: Sets the response for the Vdc_min controller (kinetic buffering).
Value: 0:
1:
Note: Re p1296 = 1:
The quick stop ramp entered in p1135 must not be equal to zero, to prevent overcurrent shutdown if F07406 is
triggered.
p1297[0...n]

Vdc_min controller speed threshold (U/f) / Vdc_min n_thresh

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: -
Min
0.00 [rpm]
Description: Sets the speed threshold for the Vdc-min controller (kinetic buffering).
If this value is exceeded a fault is output; the required response can be parameterized .
Note: Exiting the Vdc_min control before reaching motor standstill prevents the regenerative braking current from
increasing significantly at low speeds, and after a pulse inhibit, means that the motor coasts down.
r1298

CO: Vdc controller output (U/f) / Vdc_ctrl output

VECTOR_G Can be changed: -
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: -
Min
- [rpm]
Description: Displays the actual output of the Vdc controller (DC link voltage controller)
p1300[0...n]

Open-loop/closed-loop control operating mode / Op/cl-lp ctrl_mode

VECTOR_G Can be changed: C2(1), T
Data type: Integer16
P-Group: U/f open-loop control
Not for motor type: -
Min
0
Description: Sets the U/f control mode of the drive.
Value: 0:
1:
2:
3:
4:
5:
6:
SINAMICS G130/G150
List Manual (LH2), 04/2014, A5E03263479A
Buffer Vdc until undervoltage, n<p1297 -> F07405
Buff. Vdc until undervolt., n<p1297 -> F07405, t>p1295 -> F07406
U/f control with linear characteristic
U/f control with linear characteristic and FCC
U/f control with parabolic characteristic
U/f control with parameterizable characteristic
U/f control with linear characteristic and ECO
U/f control for drives requiring a precise freq. (e.g. textiles)
U/f control for drives requiring a precise frequency and FCC
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
1
Calculated: CALC_MOD_ALL
Dyn. index: DDS, p0180
Units group: 3_1
Scaling: -
Max
210000.00 [rpm]
Calculated: -
Dyn. index: -
Units group: 3_1
Scaling: p2000
Max
- [rpm]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
19
2 Parameters
2.2 List of parameters
Access level: 3
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
0
Access level: 3
Func. diagram: -
Unit selection: p0505
Expert list: 1
Factory setting
50.00 [rpm]
Access level: 3
Func. diagram: 6320
Unit selection: p0505
Expert list: 1
Factory setting
- [rpm]
Access level: 2
Func. diagram: 6300, 6301,
8012
Unit selection: -
Expert list: 1
Factory setting
0
347