Siemens SINAMICS G120 - r1282 Vdc_max controller switch-in level (U;f); Vdc_max on_level; p1283[0...n] Vdc_max controller dynamic factor (U;f); Vdc_max dyn_factor; p1285[0...n] Vdc_min controller switch-in level (kinetic buffering) (U;f); Vdc_min on_level; r1286 Vdc_min controller switch-in level (kinetic buffering) (U;f); Vdc_min on_level

List of Parameters
Parameters
1-183
© Siemens AG 2011 All Rights Reserved
SINAMICS G120 Control Units CU240B/E-2 Parameter Manual (LH11), 01/2011
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) * V_mains = 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)
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 switch-in level for the Vdc-min controller (kinetic buffering).
The value is obtained as follows:
p1286[V] = p1285[%] * sqrt(2) * p0210
Warning: An excessively high value may adversely affect normal drive operation.
Description: Displays the switch-in level for the Vdc_min controller (kinetic buffering).
Note: The Vdc_min controller is not switched back off until the DC-link voltage rises above the threshold 1.05 * p1286 and
the controller output is zero.
r1282 Vdc_max controller switch-in level (U/f) / 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]
p1283[0...n] Vdc_max controller dynamic factor (U/f) / 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 [%]
p1285[0...n] Vdc_min controller switch-in level (kinetic buffering) (U/f) / Vdc_min on_level
PM240 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 [%] 76 [%]
r1286 Vdc_min controller switch-in level (kinetic buffering) (U/f) / Vdc_min on_level
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]