Siemens SINAMICS G120 - p1295[0...n] Vdc_min controller time threshold (U;f); Vdc_min t_thresh; p1296[0...n] Vdc_min controller response (kinetic buffering) (U;f; Vdc_min response; p1297[0...n] Vdc_min controller speed threshold (U;f); Vdc_min n_thresh; r1298 CO: Vdc controller output (U;f); Vdc_ctrl output

2 Parameters
2.2 List of parameters
SINAMICS G120 Control Units CU240B-2/CU240E-2
198 List Manual (LH11), 01/2016, A5E33839529
Description: Sets the time threshold for the Vdc_min controller (kinetic buffering).
If this value is exceeded a fault is output; the required response can be parameterized.
Prerequisite: p1296 = 1
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
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.
Description: Sets the response for the Vdc_min controller (kinetic buffering).
Value: 0: Buffer Vdc until undervoltage, n<p1297 -> F07405
1: Buff. Vdc until undervolt., n<p1297 -> F07405, t>p1295 -> F07406
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
Note: For p1296 = 1:
The quick stop ramp entered in p1135 must not be equal to zero, to prevent overcurrent shutdown if F07406 is
triggered.
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 .
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
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.
Description: Displays the actual output of the Vdc controller (DC link voltage controller)
Dependency: Not visible with application class: "Dynamic Drive Control" (DDC, p0096 = 2)
p1295[0...n] Vdc_min controller time threshold (U/f) / Vdc_min t_thresh
PM240 Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Unit group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0.000 [s] 10000.000 [s] 0.000 [s]
p1296[0...n] Vdc_min controller response (kinetic buffering) (U/f / Vdc_min response
PM240 Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Unit group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0 1 0
p1297[0...n] Vdc_min controller speed threshold (U/f) / Vdc_min n_thresh
PM240 Access level: 3 Calculated: p0340 = 1 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Unit group: 3_1 Unit selection: p0505 Func. diagram: -
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 50.00 [rpm]
r1298 CO: Vdc controller output (U/f) / Vdc_ctrl output
PM230
PM230_STO
PM240
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2000 Dyn. index: -
Unit group: 3_1 Unit selection: p0505 Func. diagram: 6320
Min Max Factory setting
- [rpm] - [rpm] - [rpm]