User Manual

List of parameters
Parameters
1-175
© Siemens AG 2008 - 2013 All Rights Reserved
SINAMICS G120 CU230P-2 Control Units List Manual (LH9), 01/2013
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 bit 1 = 1).
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)
Note: The Vdc_max controller is not switched back off until the DC-link voltage falls below the threshold 0.95 * p1282 and
the controller output is zero.
Description: Sets the dynamic factor for the DC link voltage controller (Vdc_max controller).
100% means that p1290, p1291, and p1292 (gain, integral time, and rate time) are used in accordance with their
basic settings and on the basis of a theoretical controller optimization.
If subsequent optimization is required, this can be carried out using the dynamic factor. In this case, p1290, p1291,
and p1292 are weighted with the dynamic factor p1283.
Description: Sets the monitoring time of the Vdc_max controller. If the down ramp of the speed setpoint is permanently held lon-
ger than the set time, the system is shut down with fault message F7404.
r1282 Vdc_max controller switch-in level (U/f) / Vdc_max on_level
PM230
PM240, PM330
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]
p1283[0...n] Vdc_max controller dynamic factor (U/f) / Vdc_max dyn_factor
PM230
PM240, PM330
Access level: 3 Calculated: p0340 = 1,3,4 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6320
Min Max Factory setting
1 [%] 10000 [%] 100 [%]
p1284[0...n] Vdc_max controller time threshold (U/f) / Vdc_max t_thresh
PM230
PM240, PM330
Access level: 3 Calculated: p0340 = 1 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0.000 [s] 300.000 [s] 4.000 [s]