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Data Communication and Solar Net
Solar Net and
data interface
Data communica-
tion rack
The inverter is equipped with a rack for data communication devices on the bottom of the
unit.
The rack can be pulled out after removing the 2 screws, making the data communication
connections accessible.
Overcurrent and
under-voltage
shutdown
The data communication rack has a shutdown function that interrupts the energy supply to
Fronius Solar Net and to the 12 V signaling output:
- in the event of overcurrent, e.g., in case of a short circuit
- in the event of under-voltage
The overcurrent and under-voltage shutdown function does not depend on the direction of
the current flow. When a current flow of > 3 A or a voltage of < 6.5 V is measured in Fronius
Solar Net, the energy supply is interrupted to Fronius Solar Net.
The energy supply is re-established automatically.
Fronius developed Solar Net to make these add-on system components flexible and ca-
pable of being used in a wide variety of different applications. Solar Net is a data network
that enables several inverters to be linked with the system upgrades.
Solar Net is a bus system. A single cable is all that is required for one or more inverters
to communicate with all system upgrade components.
Different system upgrades are automatically recognized by Solar Net.
In order to distinguish among several identical system upgrades, each one must be as-
signed a unique number.
In order to unify each inverter in Solar Net, each inverter must also be assigned an indi-
vidual number.
You can assign individual numbers as per the ‘Setup Menu’ section in this manual.
More detailed information on individual system upgrades can be found in the relevant op-
erating instructions or on the Internet at http://www.fronius.com
IMPORTANT! When closing the data communication rack make sure that both screws
have been reattached in order to seal the inverter securely.
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