Fronius GEN24 - Page 66

Example: Curve defined by four data points.
1 P = 15 %, cos φ = 0.85 - Over-Excited
2 P = 25 %, cos φ = 1 - Over-Excited
3 P = 45 %, cos φ = 1 - Over-Excited
4 P = 90 %, cos φ = 0.9 - Under-Excited
General
In addition to the four points, the following parameters also come into play:
Parameter Range of val-
ues
Description Supplementary de-
scription
"Lock-In
Voltage-De-
pendent (% of
Nominal
Voltage)"
0 % ‑ 120 % AC voltage in per-
cent [%] related to
the nominal voltage.
If this value is ex-
ceeded, the Cos φ(P)
characteristic is ac-
tivated.
With the voltage-de-
pendent Lock-In/
Lock-Out values it
can be set that the
Cos φ(P) control is
deactivated at low
voltages.
The different values
for activation (Lock-
In) and deactivation
(Lock-Out) enable a
hysteresis to avoid
unintentionally fre-
quent switching
on/off of the func-
tion. For this, the
Lock-In value must
be greater than the
Lock-Out value.
"Lock-Out
Voltage-De-
pendent (% of
Nominal
Voltage)"
0 % ‑ 120 % AC voltage in per-
cent [%] related to
the nominal voltage.
If this value is under-
shot, the Cos φ(P)
characteristic is de-
activated. The lock-
out limit has priority
over the lock-in limit.
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