Siemens SINAMICS G120X - Bypass Switch Monitoring Time; Switch T_Monit; VDC Controller Configuration (U;F); Vdc_Ctr Config U;F

p1271[0...n] Flying restart maximum frequency for the inhibited direction / FlyRes f_max dir
G120X_DP (PM330),
G120X_PN (PM330),
G120X_USS (PM330)
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: -
Min:
0 [Hz]
Max:
650 [Hz]
Factory setting:
5 [Hz]
Description: Sets the maximum search frequency for a flying restart in an inhibited setpoint direction (p1110, p1111).
Note
The parameter has no effect for an operating mode, which only searches in the setpoint direction (p1200 > 3).
p1274[0...1] Bypass switch monitoring time / Switch t_monit
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: -
Unit group: - Unit selection: - Function diagram: -
Min:
0 [ms]
Max:
5000 [ms]
Factory setting:
1000 [ms]
Description: Sets the monitoring time for the bypass switch.
Index: [0] = Switch motor/drive
[1] = Switch motor/line supply
Dependency: The "Bypass" function is only available for induction motors.
Note
The monitoring is deactivated with p1274 = 0 ms.
The changeover time for the bypass (p1262) is extended by the value in this parameter.
p1280[0...n] Vdc controller configuration (U/f) / Vdc_ctr config U/f
Access level: 3 Calculated: - Data type: Integer16
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 6300, 6320,
6854
Min:
0
Max:
3
Factory setting:
1
Description: Sets the configuration of the controller for the DC link voltage (Vdc controller) in the U/f operating mode.
Value: 0: Inhibit Vdc ctrl
1: Enable Vdc_max controller
2: Enable Vdc_min controller (kinetic buffering)
3: Enable Vdc_min controller and Vdc_max controller
Note
For high input voltages (p0210), the following settings can improve the degree of ruggedness of the Vdc_max controller:
- set the input voltage as low as possible, and in so doing, avoid A07401 (p0210).
- set the rounding times (p1130, p1136).
- increase the ramp-down times (p1121).
- reduce the integral time of the controller (p1291), factor 0.5.
- activate the Vdc correction in the current controller (p1810.1 = 1) or reduce the derivative action time of the controller
(p1292, factor 0.5).
In this case, we generally recommend to use vector control (p1300 = 20) (Vdc controller, see p1240).
The following measures are suitable to improve the Vdc_min controller:
- Optimize the Vdc_min controller (see p1287).
- Activate the Vdc correction in the current controller (p1810.1 = 1).
If a braking resistor is connected to the DC link (p0219 > 0), then the Vdc_max control is automatically deactivated.
Parameters
7.2 Parameter list
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC 663