Fronius GEN24 Operating Instructions Manual page 15

must be activated for both the isolation warning and the isolation error.
Isolation Warning
The measured value of the isolation monitoring is used for an isolation warning.
Status code 1083 is displayed if the measured value falls below an adjustable
limit value.
Isolation Error
The measured value of the isolation monitoring is also used for isolation error
monitoring. If the measured isolation value is below the limit value "Isolation Er-
ror Threshold", feeding energy into the grid is prevented and status code 1082 is
displayed.
IMPORTANT!
For the "Isolation Monitoring" function, the parameters in the two menu sections
described must be configured accordingly.
The parameters below in the menu item "Safety and grid regulations" →
1
"Country setup" → "Safety" → "Isolation monitoring" are used to configure the
parameters for the isolation measurement:
Parameter Range of values
"Iso Monitoring On
Mode"
Off
Off (with Warn-
ing)
0.1 ‑ 10 MOhm
"Isolation Error
Threshold"
The parameters below in the menu item "Device configuration" → "Inverter" →
2
"Iso warning" are used to configure the parameters for the isolation warning:
Parameter Range of values
"Iso Warning" On
Off
"Isolation meas- Precise
urement mode"
Quick
0.1 ‑ 10 MOhm
"Isolation Warn-
ing Threshold"
Description
The function is activated.
The function is deactivated.
Isolation monitoring is deactivated and
status code 1189 is permanently dis-
played on the user interface of the in-
verter.
If the measured isolation value is lower
than this value, feeding energy into the
grid is prevented (if isolation monitoring
is activated) and status code 1182 is
displayed on the user interface of the
inverter.
Description
The isolation warning is activated.
If the isolation warning threshold is un-
dershot, a warning occurs but not a
shutdown.
The function is deactivated.
Isolation monitoring is performed with
the highest accuracy and the measured
insulation resistance is displayed on the
user interface of the inverter.
Isolation monitoring is performed with
lower accuracy, which shortens the dur-
ation of the isolation measurement and
the isolation value is not displayed.
If this value is undershot, status code
1183 is displayed on the user interface
of the inverter.
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