Fronius Primo (Online) - Manual (Page 20)

18
Single MPP tracker mode with only one string on an inverter with multiple MPP
trackers:
Connecting only one string to an inverter with multiple
MPP trackers
If only one string is used for connection to
the inverter, the connection DC+1 (pin 2)
and DC+2 (pin 1) must be jumpered.
The cable cross-section of the DC connec-
tion lead and the jumpering must be the sa-
me. Jumpering of the DC terminal is not
necessary, as these terminals are jumpe-
red internally.
When starting for the first time, set MPP
TRACKER 2 to "OFF" (this will also later be
possible from the Basic menu).
If the inverter with multiple MPP trackers is
operated in single MPP tracker mode, the
currents from the DC leads connected are
divided evenly across both inputs.
PV 1
1
DC+1
DC-1
DC+2 DC-
1
1 2 3 4
2 2
D1 D1
=
*
DC+1
max. 36 A to
a single
DC terminal
WHEN ONLY ONE STRING IS USED
*