Service Code 1175 On The Gen24 Inverter Series; Triggering A Rapid Shutdown - Fronius Rapid Shutdown Box - Duo Installation Instructions Manual

Description: At the input, the inverter identifies a DC voltage too low for the grid
power feed operation. If the service code occurs for a lengthy period of time in
spite of solar radiation, the following steps can help discover the error:
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Service Code

Service Code 1175 on the GEN24 inverter series:

1175 on the
GEN24 inverter Description: The inverter detects insufficient DC voltage at the input for grid
series
power feed operation. If this service code occurs over a longer period of time
despite the presence of solar radiation, the following steps can help to find the
error:
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Triggering a rap- Two different types of rapid shutdown can be triggered depending on the con-
id shutdown figuration and on-site installation:
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Check the position of the DC disconnector at the inverter - it should be ON
Read the DC voltage on the display or measure it at the inverter terminals
- If the DC voltage is 0 V, this means that either the Rapid Shutdown Box
is not supplied with power from the pv array or there is no electrical con-
nection between the Rapid Shutdown Box and the inverter. Check DC
cabling including Rapid Shutdown Box inputs. Rapid Shutdown Box -
Quattro: At least one string has to be connected at input 1.
- If the DC voltage is approximately 28 V, this means that the Rapid Shut-
down Box is supplied with power and is waiting for approval at the signal
ports. Check cabling of the signal loop and position of any switches in
the signal loop.
If the service code still occurs in spite of solar radiation, contact your system
engineer.
Check the position of the DC disconnector on the inverter - should be ON
Read the DC voltage on the display or measure it at the inverter terminals
- If the DC voltage is 0 V, this means that either the Rapid Shutdown Box
is not being supplied by the PV field or there is no electrical connection
between the Rapid Shutdown Box and the inverter. Check DC cabling in-
cluding the Rapid Shutdown Box inputs! With the Rapid Shutdown Box -
Quattro at least one string must be connected to input 1.
- If the DC voltage is approximately 28 V, this means that the Rapid Shut-
down Box is being supplied and is waiting for the release on the signal
ports. Check the wiring of the signal loop and the position of all switches
in the signal loop!
If the service code is still present despite solar radiation, contact your sys-
tem installer.
Via loss of AC connection (only for the SnapINverter inverter series): If the
signal loop has been connected to the inverter (see chapter
Rapid Shutdown Box to GEN24 Inverter
occur by interrupting the AC connection. The inverter detects a failure of the
AC connection and switches off the connection to the solar modules via the
Rapid Shutdown Box. The lines are discharged and isolated.
Via external switch: If failure detection via the AC connection is not suitable
or additional options are required, external switches can be installed in the
signal loop (see chapter
Box to an emergency stop button
then be triggered by pressing one of these switches. The lines are discharged
and isolated.
on page 18), a rapid shutdown can
SnapINverter: Connecting the Rapid Shutdown
on page 20). The Rapid Shutdown can
Connecting the
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