Fronius Rapid Shutdown Box Duo - Connecting Wires to Terminals; Connecting RSB to SnapINverter

Connecting the
wires to the Ter-
minals
A1 A2
DC-Output
Duo / Quattro
Quattro
Signal Port
Duo / Quattro
Duo
Connecting the
Rapid Shutdown
Box to a SnapIN-
verter
If the AC supply is interrupted, the inverter disconnects the PV DC supply via the Rapid
Shutdown Box. As soon as the AC supply is reinstated, the DC supply will resume.
The signal relay in the Fronius inverter opens if the inverter loses the AC connection.
The Rapid Shutdown Box interrupts the DC connection. However, the signal relay can
no longer be used for other functions (energy manager, alarm, etc.) if the rapid shut-
down initiation is to be triggered by an AC failure on the inverter.
The inverter does not need to be configured after connecting the Rapid Shutdown Box. If
settings have already been made regarding energy management, check this section in
the inverter Operating Instructions. The energy manager (relay mode) must be set to
'ON' (factory setting).
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