SMA SUNNY ISLAND 4548-US Operating Manual page 141

SMA Solar Technology America LLC
Function/ Meaning
Setting
ExtVfOk External voltage and
frequency OK
GdOn Utility grid
Error Error
Warn Warning
Run Run
BatFan Battery Fan
AcdCir Acid Circulation
MccBatFan Multicluster battery fan
Operating Manual
Function description
External voltage and frequency are within the valid
range for connection.
Relay switching when utility grid is available and
connected.
Sunny Island has a fault; in case of fault, contact is
open (relay is deactivated).
If the autostart is activated, the error status will be
left within 15 s and restart triggered. If the start is
unsuccessful this procedure will be repeated until
the autostart counter has expired.
The Sunny Island has warning pending. If the
warning disappears, the "Warning" state is quit.
When a warning disappears depends on the type
of warning.
Sunny Island is in operation, contact is closed
(relay is activated) if the device is running in
inverter operation.
Relay is used for automatic battery room ventilation
(switching the fan).
The "BatFan" function is responsible for the
ventilation of the battery room and provides
ventilation of the room in the event of battery
gassing.
Relay is used for automatic acid circulation
(switching the electrolyte pump)
The acid circulation enables mixing of the acid and
thus reduces acid stratification in the battery.
Relay is used for automatic battery room ventilation
(switching the fan).
"MccBatFan" is the request from the master of the
main cluster that is transmitted to a master of an
extension cluster in order to use its relay for the
battery room ventilation.
SI4548-6048-US-BE-en-21
15 Relays
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