User Manual

Parameters
List of Parameters
1-168
© Siemens AG 2011 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 06/2011
Description: Displays the switch-in level for the Vdc_max controller.
If p1254 = 0 (automatic sensing of the switch-in level = off), then the following applies:
r1242 = 1.15 * sqrt(2) * V_mains = 1.15 * sqrt(2) * p0210 (supply voltage)
PM230: r1242 is limited to Vdc_max - 50.0 V.
If p1254 = 1 (automatic sensing of the switch-in level = on), then the following applies:
r1242 = Vdc_max - 50.0 V (Vdc_max: Overvoltage threshold of the power unit)
Note: The Vdc_max controller is not switched back off until the DC-link voltage falls below the threshold 0.95 * p1242 and
the controller output is zero.
Description: Sets the dynamic factor for the DC link voltage controller (Vdc_max controller).
100% means that p1250, p1251, and p1252 (gain, integral time, and rate time) are used corresponding to their
basic settings and based on a theoretical controller optimization.
If subsequent optimization is required, this can be carried out using the dynamic factor. In this case p1250, p1251,
p1252 are weighted with the dynamic factor p1243.
Description: Sets the switch-in level for the Vdc-min controller (kinetic buffering).
The value is obtained as follows:
r1246[V] = p1245[%] * sqrt(2) * p0210
Dependency: Refer to: p0210
Warning: An excessively high value may adversely affect normal drive operation.
r1242 Vdc_max controller switch-in level / Vdc_max on_level
PM230
PM240
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2001 Data set: -
Units group: - Unit selection: -
Min Max Factory setting
- [V] - [V] - [V]
p1243[0...n] Vdc_max controller dynamic factor / Vdc_max dyn_factor
PM230
PM240
Access level: 3 Calculated: p0340 = 1,3,4 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: DDS, p0180
Units group: - Unit selection: -
Min Max Factory setting
1 [%] 10000 [%] 100 [%]
p1245[0...n] Vdc_min controller switch-in level (kinetic buffering) / Vdc_min on_level
PM230 Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: DDS, p0180
Units group: - Unit selection: -
Min Max Factory setting
65 [%] 150 [%] 73 [%]