Control - Vacon NX ACTIVE FRONT END II Applications Manual

58 • Vacon
P2.6.6 Operation Time
Stored Operation Time. When application is reloaded operation hours will go zero if this
parameter is not updated.
Monitoring signal is in hours with two decimal.
Parameter is in format of:
xx (Years) XX (Monts) XX (Days) XX (Hours) XX Minutes
1211292359 -> 12 years, 11 months, 29 days, 23 hours and 59 minutes.

7.6.1 Control

P2.6.7.1 Capacitor Size
This parameter defines the reactive current going to the LCL filter capacitor. It
compensates the LCL effect to the reactive current by adjusting the reactive current
reference internally. The inductor size is also added to compensation. If set correctly, the
power factor on the grid side will be 1.
P2.6.7.1 Inductor Size [%] (ID1461)
This parameter defines voltage losses in percentage of the nominal voltage at 100%
active current. This value is internally added to the reactive current reference thus giving
power factor 1 on the grid side, if set correctly together with Capacitor Size. The
transformer and feeding cables can be compensated by increasing this value.
P2.6.7.3 Dynamic Support Kp
This function supports weak grid by generating or consuming reactive current in grid
under- and over-voltage situations. Reactive current is generated/consumed with
gradient by set parameter value by every 1 % decrease/ increase in grid voltage to
stabilize voltage in the point of coupling.
P2.6.7.4 Synch Kp
This parameter sets the gain of the synchronisation controller used to synchronise the
switching to the supply.
P2.6.7.5 Synch Ti
This parameter sets the time constant of the controller used to synchronise the
switching to the supply (15 equals 7ms).
P2.6.7.6 Active Current Kp
This parameter sets the gain of the controller for the active current of the regenerative
unit.
P2.6.7.7 Active Currnt Ti
[%] (ID1460)
#,# [%/%] ID1797
ID1457
ID1458
ID1455
ID1456
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
arfiff05 Standard AFE-II
ID1855