User Manual

2 Parameters
2.2 List of parameters
SINAMICS G120 CU230P-2 Control Units
170 List Manual (LH9), 04/2014, A5E33838102B AA
Note: Re bit 12, 13:
Only effective for p1231 = 14.
Description: Sets the controller configuration of the DC link voltage (Vdc controller) in the closed-loop control mode. For U/f
control: see p1280.
Value: 0: Inhib Vdc ctrl
1: Enable Vdc_max controller
3: Enable Vdc_min controller and Vdc_max controller
Dependency: Refer to: p1245
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. If overvoltage faults occur in spite of the Vdc_max controller
being active, the ramp-down time in p1121 might need to be increased.
- set the input voltage p0210 as low as possible in line with the supply voltage (in so doing avoid A07401).
p1240 = 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
minimum DC link voltage when accelerating.
- the motor is braked in order to use its kinetic energy to buffer the DC link.
- the Vdc_min controller cannot be used when the line voltage is permanently below 380 V (if required, p1247 should
be reduced).
Description: Sets the controller configuration of the DC link voltage (Vdc controller) in the closed-loop control mode. For U/f
control: see p1280.
Value: 0: Inhib Vdc ctrl
1: Enable Vdc_max controller
2: Enable Vdc_min controller (kinetic buffering)
3: Enable Vdc_min controller and Vdc_max controller
Dependency: Refer to: p1245
Notice: An excessively high value in p1245 can possibly negatively influence the normal operation of the drive.
Note: If a braking resistor is connected to the DC link (p0219 > 0), then the Vdc_max control is automatically deactivated.
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
minimum DC link voltage when accelerating.
- the motor is braked in order to use its kinetic energy to buffer the DC link.
p1240[0...n] Vdc controller configuration (vector control) / Vdc ctr config vec
PM230 Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6220
Min Max Factory setting
0 3 1
p1240[0...n] Vdc controller configuration (vector control) / Vdc ctr config vec
PM240
PM330
Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6220
Min Max Factory setting
0 3 1