Parameters
List of Parameters
1-160
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Description: Sets the controller configuration of the DC link voltage (Vdc controller) in the closed-loop control mode. For V/f con-
trol: see p1280.
Value: 0: Inhib Vdc ctrl
1: Vdc_max controller enable
2: Vdc_min controller (kinetic buffering) enable
3: Vdc_min controller and Vdc_max controller enable
Dependency: Refer to: p1245
Refer to: A07400, A07401, A07402, F07405, F07406
Notice: An excessively high value in p1245 can possibly negatively influence the normal operation of the drive.
Note: p1240 = 1, 3:
When the DC link voltage limit specified for the power unit is reached the following applies:
- the Vdc_max controller limits the regenerative energy in order that the DC link voltage is kept below the maximum
DC link voltage when braking.
- the ramp-down times are automatically increased.
p1240 = 2, 3:
When the switch-in threshold of the Vdc_min controller is reached (p1245), the following applies:
- the Vdc_min controller limits the energy taken from the DC link in order to keep the DC link voltage above the min-
imum DC link voltage when accelerating.
- the motor is braked in order to use its kinetic energy to buffer the DC link.
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)
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.
p1240[0...n] Vdc controller or Vdc monitoring configuration (vector control) / Vdc_ctr config vec
PM240 Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Data set: DDS, p0180
Min Max Factory setting
0 3 1
r1242 Vdc_max controller switch-in level / Vdc_max on_level
PM240 Access level: 3 Calculated: - Data type: FloatingPoint32
Unit: [V] Scaling: p2001 Data set: -
p1243[0...n] Vdc_max controller dynamic factor / Vdc_max dyn_factor
PM240 Access level: 3 Calculated: p0340 = 1,3,4 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: DDS, p0180
Min Max Factory setting
1 [%] 10000 [%] 100 [%]
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