3.5. General 2
The 5th menu item shows the parameterization of general settings 2.
fU logic: If the frequency/voltage switching logic is activated, the switch-
on is possible only if the frequency and all voltages must be sim-
ultaneously within the switching points +/- hysteresis (of U>, U<
and f>, f<) after an auxiliary voltage failure or after each trigger-
ing of U>,U< or f>, f<.
If the frequency/voltage switching logic is deactivated, the fre-
quency and all voltages must be only within the switching points
after an auxiliary voltage failure; hystereses are not considered.
KU: A short interruption means a limit value violation of the mains
voltage or mains frequency over a period of a maximum of 3 s.
If the mains is within the tolerance range again after 3 s, the
blocking time is only 5 s; else, the set blocking time is active (see
section 3.4 General 1).
INE-LL: For single-phase inverters, three-phase monitoring of the exter-
nal conductor voltage may be used as a criterion for isolated
mains detection.
If this function is activated, U>> and U<< (stage 2) are activated
for the phase voltages.
This function can be activated only if the mains is set to star (see
section 3.4 General 1).
P-SEQ: This function monitors the phase sequence (direction of rota-
tion) of L1, L2, L3 and issues an error message or a trigger if this
is not observed.
Unom: The specification of the nominal voltage influences the starting
value of the 10-minute average value, since this always assumes
the value of the nominal voltage after commissioning of the de-
vice.
In addition, the frequency triggering functions and the vector
shift are blocked as soon as all voltages are <70% nominal volt-
age.
The nominal voltage is also influenced by the type of measure-
ment (see General 1 - mains):
o 4-wire Mains (star) and Unominal 400 V => 230 V nominal voltage
o 3-wire Mains (delta) and Unominal 400 V => 400 V nominal voltage
o 4-wire Mains (star) and Unominal 100 V => 57 V nominal voltage
o 3-wire Mains (delta) and Unominal 100 V => 100 V nominal voltage
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