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2 Parameters
2.2 List of parameters
SINAMICS G120C
140 List Manual (LH13), 04/2014, A5E33840768B AA
Note: The regenerative power limit p1531 is used for vector control to pre-control the Vdc_max controller. The lower the
power limit is set, the lower the correction signals of the controller when the voltage limit is reached.
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).
Description: Sets the configuration of the controller for the DC link voltage (Vdc controller) in the U/f operating mode.
Value: 0: Inhib Vdc ctrl
1: Enable 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.
- Reduce the rate 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).
If a braking resistor is connected to the DC link (p0219 > 0), then the Vdc_max control is automatically deactivated.
Description: Displays the switch-in level for the Vdc_max controller.
If p1294 = 0 (automatic sensing of the switch-in level = off), then the following applies:
r1282 = 1.15 * sqrt(2) * p0210 (supply voltage)
If p1294 = 1 (automatic sensing of the switch-in level = on), then the following applies:
r1282 = Vdc_max - 50.0 V (Vdc_max: Overvoltage threshold of the power unit)
r1282 = 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 * r1282 and
the controller output is zero.
p1271[0...n] Flying restart maximum frequency for the inhibited direction / FlyRes f_max dir
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0 [Hz] 650 [Hz] 0 [Hz]
p1280[0...n] Vdc controller configuration (U/f) / Vdc_ctr config U/f
Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6300, 6320
Min Max Factory setting
0 1 1
r1282 Vdc_max controller switch-in level (U/f) / Vdc_max on_level
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2001 Dyn. index: -
Units group: - Unit selection: - Func. diagram: 6320
Min Max Factory setting
- [V] - [V] - [V]
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