Parameter Range of val-
ues
Description
"Iso Alternative
Mode"
Accurate Isolation monitoring is performed with the
highest accuracy and the measured insula-
tion resistance is displayed on the user in-
terface of the inverter.
Fast Isolation monitoring is performed with
lower accuracy, which shortens the dura-
tion of the isolation measurement, and the
isolation value is not displayed on the user
interface of the inverter.
"Isolation Warn-
ing Threshold"
100,000 ‑
10,000,000 Ω
If this threshold is undershot, status code
1083 is displayed on the user interface of
the inverter.
"Backup Power"
Parameter Range of val-
ues
Description
"Backup Nomin-
al Voltage"
220 ‑ 240 V Is the nominal phase voltage output in
backup power mode.
"Backup Under-
voltage Protec-
tion Limit U<
[pu]"
0 ‑ 2%V The setting value is used to set the limit
value for switching off backup power
mode,
e. g. setting value 0.9 = 90% of the nomin-
al voltage.
"Backup Under-
voltage Protec-
tion Time U<"
0.04 ‑ 20 s Triggering time for falling below the
backup power undervoltage protection
limit value.
"Backup Over-
voltage Protec-
tion Limit U>
[pu]"
0 ‑ 2%V The setting value is used to set the limit
value for switching off backup power
mode,
e. g. setting value 1.1 = 110% of the nom-
inal voltage.
"Backup Over-
voltage Protec-
tion Time U>"
0.04 ‑ 20 s Triggering time for exceeding the backup
power overvoltage protection limit value.
"Backup Restart
Delay"
0 ‑ 600 s Is the waiting time for resumption of
backup power mode after a shutdown.
"Backup Restart
Attempts"
1 ‑ 10 Is the max. number of automatic restart
attempts. When the max. number of auto-
matic restart attempts is reached, the ser-
vice message 1177 must be acknowledged
manually.
"Backup Extern-
al Frequency
Check"
(Italy only)
Off The function is deactivated
On For backup power mode (Full Backup) in
Italy, the external frequency check must
be activated. Before ending backup power
mode, the grid frequency is checked.
When the grid frequency is in the allowed
limit range, the loads are connected to the
public grid.
108
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