Regions R1 to R3 must have descending values of detection thresholds:
-
The R1 threshold must be higher than the R2 threshold, and so on.
-
The use of identical thresholds for multiple regions is prohibited.
-
Using the threshold value 0 % is allowed.
To deactivate a specific region, its threshold can be used:
An HV region (R1) is deactivated by adjusting the threshold to 200 %. An LV re-
gion (R3) is deactivated by adjusting the threshold to 0 %.
General VFRT settings
The following setting values apply equally to all regions.
Parameter
Range of values
Standard
value
Description
"Mode"
On
VFRT function is active ac-
cording to the set para-
meter values.
Off
Off
If no special behaviour is
required during grid dis-
turbances, the inverter will
behave according to the
default values in this table
with this setting. Any para-
meter settings made are
ignored.
"Reactive Cur-
rent Limit for
Overexcited Op-
eration."
0
‑
110
[% IacNominal]
100 %
Limitation of the reactive
current during a mains
voltage fault and overex-
cited operation - in per-
cent [%] related to the
nominal current l
N
.
This parameter is only ef-
fective for the current in-
rush mode "Active Asym-
metric Current".
"Reactive Cur-
rent Limit for
Underexcited
Operation."
0
‑
110
[% IacNominal]
100 %
Limitation of the reactive
current during a mains
voltage fault and underex-
cited operation - in per-
cent [%] related to the
nominal current l
N
.
This parameter is only ef-
fective for the current in-
rush mode "Active Asym-
metric Current".
30
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