Reference Adjust Functions - Danfoss Vacon NXP Applications Manual

64 · vacon
0 = No action.
1 = Reference set to P2.2.6.4 when at STOP state.
2 = Reference set to P2.2.6.4 when AFE mode is active.
3 = Reference set to P2.2.6.4 when AFE mode is active or drive in STOP state.
2.2.4.9 Base Reference at Stop State ID1538
Base reference on situation selected by P2.2.6.7 Base Reference to Zero. Reference is
ramped after start command to P2.2.6.5. This parameter defines power level that is
injected to grid right after synchronisation.
NOTE! The actual power will be determined by the set supply frequency, drooping and
the start power mode.
5.2.3

Reference adjust functions

5.2.3.1 Reactive Current Reference
2.2.5.1 Reactive Adjust Rate
Defines the rate that is used to change the reactive current reference when Up and Down
inputs are used.
2.2.5.2 Reactive Ref Up (DigIn)
Select a digital input to increase the reactive reference with a set ramp rate.
2.2.5.3 Reactive Ref Down (DigIn)
Select a digital input to increase the reactive reference with a set ramp rate.
5.2.3.2 AC Voltage Reference
P2.2.6.1 Voltage at field weakening point
Above the field weakening point, the output voltage remains at the set value. Below the
field weakening point, the output voltage depends on the setting of the U/f curve
parameters.
P2.2.6.2 Field weakening point ID602
The field weakening point is the output frequency at which the output voltage reaches the
field weakening point voltage. Set this to level where generator's AVR starts to decrease
voltage as a function of generator speed.
P2.2.6.3 Voltage Correction
This parameter is used to compensate the zero load voltage drop in grid side when
running in Micro Grid or island mode. The supply voltage parameter can also be used for
this purpose, but Grid Voltage D7 protection uses this increased value for reference too.
When using this parameter for compensation, the supply voltage can be left to nominal
value.
5
ID1557
ID1553
ID1554
ID603
ID1790
Tel. +358 (0)201 2121 • Fax: +358 (0)201 2121 205
Description of parameters