Danfoss VLT AutomationDrive FC 301 Programming Manual page 662

VLT AutomationDrive FC 301/302
Programming Guide
5.30 Parameter Group 40-** Special Settings
5.30.1 40-1* Aux. Functions Control
Parameter 40-10 Kin. Back-up UdcRef
Table 1348: Parameter 40-10 Kin. Back-up UdcRef
40-10 Kin. Back-up UdcRef
Default value: Size related
Conversion index: 0
Set DC-link voltage for kinetic back-up mode. To set a higher DC-link voltage for riding through an unbalanced fault, set parameter
14-10 Mains Failure to [4] Kinetic back-up and leave parameter 40-14 Mains Loss Duration as set. If ride through is not required, set
parameter 14-10 Mains Failure to either [1] Ctrl. ramp-down, [2] Ctrl. ramp-down, trip, or [5] Kinetic back-up, trip.
Parameter 40-11 Kin. Back-up Integral Time
Table 1349: Parameter 40-11 Kin. Back-up Integral Time
40-11 Kin. Back-up Integral Time
Default value: Size related
Conversion index: -3
The kinetic back-up controller integral time value enables optimizing the DC-link voltage response. If there is external capacitance
on the DC link, increase the value. To obtain fast control response, decrease the value. However, if the value is too low, the process
becomes unstable.
Parameter 40-12 Kin. Back-up Lead Filter Time
Table 1350: Parameter 40-12 Kin. Back-up Lead Filter Time
40-12 Kin. Back-up Lead Filter Time
Default value: Size related
Conversion index: -3
This parameter is only valid in VVC+ control.
This parameter specifies the kinetic back-up controller lead filter time. Increase this value to ensure stable DC-link voltage control
for high-inertia applications.
Parameter 40-13 Kin. Back-up Min Run Time
Table 1351: Parameter 40-13 Kin. Back-up Min Run Time
40-13 Kin. Back-up Min Run Time
Default value: Size related
Conversion index: -3
Minimum runtime of the kinetic back-up. Kinetic back-up control must run during this time, even mains voltage can come back
within this time span. The purpose of this function is to avoid that the drive frequently changes in and out of kinetic back-up mode,
if fluctuating mains voltage occurs.
662 | Danfoss A/S © 2022.12
Parameter type: Range, 300 - 1080 V
Data type: Uint16
Parameter type: Range, 0.001 - 1000 s
Data type: Uint16
Parameter type: Range, 0.001 - 1000 s
Data type: Uint16
N O T I C E
Parameter type: Range, 0.005 - 2 s
Data type: Uint16
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU275636650261en-000101 / 130R0334