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Item
Designation
(1)
Switchable multifunction current interface (e.g. for power reduction function, interface to meter, measu-
rement input, etc.)
Pin 1 = measurement input: max. 20 mA, 100 Ohm measurement resistor (load impedance)
Pin 2 = max. short circuit current 15 mA, max. open circuit voltage 16 V DC or GND
Wiring diagram variant 1: Signal contact for overvoltage protection
Pin 1: -
Pin 2: +
Wiring diagram variant 2: 4-20 mA
Pin 1: +
Pin 2: -
Use the 2-pin mating connector supplied with the inverter to connect to the multifunction current interfa-
ce.
(2)
Fronius Solar Net connection / interface protocol IN
(3)
Fronius Solar Net connection / interface protocol OUT
'Fronius Solar Net' / interface protocol input and output for connecting to other DATCOM components
(e.g. inverter, sensor box, etc.)
If several DATCOM components are linked together, a terminating plug must be connected to every free
IN or OUT connection on a DATCOM component. For inverters with a Fronius Datamanager plug-in
card, two terminating plugs are supplied with the inverter.
(4)
The 'Solar Net' LED
indicates whether the Fronius Solar Net power supply is available
The 'Solar Net' LED is on:
the power supply for data communication within the Fronius Solar Net / interface protocol is OK
The 'Solar Net' LED flashes briefly every 5 seconds:
data communication error in the Fronius Solar Net
-
Overcurrent (current flow > 3 A, e.g. resulting from a short circuit in the Fronius Solar Net ring)
-
Undervoltage (not a short circuit, voltage in Fronius Solar Net < 6.5 V, e.g. if there are too many
DATCOM components on the Fronius Solar Net and not enough electrical power is available)
In this case, power for the DATCOM components must be supplied by connecting an additional po-
wer supply to one of the DATCOM components. To detect the presence of an undervoltage, check
some of the other DATCOM components for faults as required.
After cutting out because of overcurrent or undervoltage, the inverter attempts to restore the power sup-
ply in the Fronius Solar Net every 5 seconds while the fault is still present.
Once the fault is rectified, power to the Fronius Solar Net will be restored within 5 seconds.
(5)
The 'Data transfer' LED
flashes while the USB stick is being accessed. The USB stick must not be removed while recording is in
progress.
(6)
USB A socket
for connecting a USB stick with maximum dimensions of
65 x 30 mm
The USB stick can function as a datalogger for an inverter. The USB stick is not included in the scope
of supply of the inverter.
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