Parameters
List of parameters
1-354
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
- when other drives regenerate into the DC link, then the Vdc_max controller causes the motor to accelerate.
p1240 = 2, 3:
When the lower DC link voltage threshold is reached (p1248), 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.
p1240 = 4, 5, 6:
When the threshold in p1244 or p1248 is reached, the DC link voltage monitoring initiates a fault with a response
and therefore reduces additional negative effects on the DC link voltage.
p1240 = 7, 9:
As for p1240 = 1, 3. However, the motor is prevented from accelerating due to the fact that other drives are regen-
erating. The effective lower torque limit cannot exceed the offset of the torque limit (p1532).
p1240 = 8, 9:
As for p1240 = 2, 3. However, the motor is prevented from braking due to the fact that the DC link voltage has been
lowered. The effective upper torque limit cannot be less than the offset of the torque limit (p1532).
Description: Sets the controller configuration of the DC link voltage (Vdc controller) in the closed-loop control mode.
Values: 0: Inhib Vdc ctrl
1: Enables Vdc_max controller
2: Enables Vdc_min controller (kinetic buffering)
3: Enables Vdc_min controller and Vdc_max controller
4: Activates Vdc_max monitoring
5: Activates Vdc_min monitoring
6: Activates Vdc_min monitoring and Vdc_max monitoring
Dependency: Refer to: p1245
Refer to: A07400, A07401, A07402, F07403, F07404, 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 Motor Module 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.
p1240 = 4, 5, 6:
When the threshold in r1242 or r1246 is reached, the DC link voltage monitoring initiates a fault (F07403 or F07404)
with a response and therefore reduces additional negative effects on the DC link voltage.
p1240[0...n] Vdc controller or Vdc monitoring configuration / Vdc_ctrl config
VECTOR (n/M) Can be changed: U, T Calculated: - Access level: 3
Data type: Integer16 Dynamic index: DDS, p0180 Func. diagram: 6220
P-Group: Functions Units group: - Unit selection: -
Not for motor type: REL Expert list: 1
Min Max Factory setting
0 6 1
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