Parameters
Setting
Refer-
ence
Description
Note: The gradient is overlaid with the set-
tling time.
Settling time
[
VArPct_WinTms]
200 – 60000 [ms]
Determines the dynamic behavior in the
event of a change in the active power set
value. The active power is changed accord-
ing to a PT-1 characteristic curve with a set-
tling time of 5 Tau..
NOTE: The settling time is overlaid
with the increasing and decreasing
gradient.
Timeout
[
VArPcT_RvrtTms]
0 – 1000 [s]
Sets the time after which the inverter, if it
does not receive a new reactive power spe-
cification, falls back to the previously valid
reactive power procedure.
If the
timeout
is set to
0
seconds, the
transmitted power factor specification is
permanently retained, even in the event of
a communication failure.
Note: when the unit is restarted, the
timeout
is reset to the set fallback time.
cos ϕ /(p/pn)
In the cos ϕ / (P / Pn) operating mode, the setpoint value of cos ϕ and the setpoint for the reactive power de-
rived from it are continuously calculated depending on the actual power level. This function ensures that grid
support is provided by the reactive power when a significant voltage boost is anticipated due to a high feed
level. In this case, a characteristic curve is specified which can be used to configure up to 10 nodes, value pairs
for active power and cos ϕ. The active power is entered as a % in relation to the nominal power. Other para-
meters allow you to limit functionality and to limit activation to certain voltage ranges.
Q(U) 10 nodes
When it comes to Q(U) 10 nodes, the nominal value of the reactive power is continuously calculated depending
on the grid voltage. This function ensures that grid support is provided by the reactive power as soon as the
voltage actually deviates from the target voltage. In this case, a characteristic curve is specified which can be
used to configure up to 10 nodes, value pairs for voltage and reactive power. Other parameters allow you to
limit functionality and to limit activation to certain voltage ranges as well as parametrise the transient re-
sponse.
The zero sequence voltage is used to calculate the reactive power target for three-phase units.
230
207
0
Q [%PN]
U[V]
Q(U) standard characteristic
0
20
40
40
20
60
253
60
1) 43,6 | 207
2) 0 | 212
3) 0 | 230
4) 0 | 248
5) 43,6 | 253
Fig. 44:
Q(U) standard characteristic curve with 5 nodes
Manual
Specifications | 10
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