Fronius Symo Advanced 10.0-3-M Operating Instructions Manual page 51

connected. A clearly numbered connection, but also at the DC terminal, makes it
easier to find the correct string, e.g. during an inspection. Set the MPP tracker 2
to the "On" during initial commissioning. The user can of course also do this later
in the Basic menu of the inverter.
Single MPP tracker mode on both MPP tracker inputs:
If the solar module strings are connected to a string combiner box (GAK - gener-
ator junction box) and the distance to the inverter is bridged by means of a DC
string, this DC string can be connected to the inverter as follows.
Jumpering
DC+1(Pin2)
DC Con Kit 25
If your installation requires an AFCI (AFPE) according to IEC63027, do not use a
DC Con Kit.
The Fronius DC Con Kit 25 (4,251,015) can be used to connect a solar module
string with a cross-section of up to 25 mm² to the inverter.
With jumpering, the MPP tracker 1 and
MPP tracker 2 can be jumpered to-
gether. This takes place as shown in
the image via the connection DC+1
(Pin2) to DC+2 (Pin1).
IMPORTANT! The MPP tracker 2 must
be set to OFF. This can be checked in
the Basic menu of the inverter.
DC+2(Pin1)
IMPORTANT! The cable diameter of
the DC connection cable and the
jumpering must be the same. Jumper-
ing of the DC- terminal is not neces-
sary because it is jumpered internally.
Set the MPP tracker 2 to "OFF" during
initial commissioning. This can also be
done later in the Basic menu of the in-
verter. By using the DC Con Kit 25, the
DC strings of the connected DC lines
are divided equally between both in-
puts.
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