21
EN-US
Connecting 2–4 strings in Multi MPP Tracker mode:
Connecting two solar module fields to a Multi MPP
Tracker inverter
Connect the strings separately to the two
MPP Tracker inputs (DC+1/DC+2). The
DC- terminals can be used as desired, sin-
ce they are connected internally.
Set MPP TRACKER 2 to "ON" when star-
ting for the first time (also possible in the ba-
sic menu subsequently).
Single MPP Tracker mode on a Multi MPP Tracker inverter:
Connecting multiple combined solar module fields to a
line on a Multi MPP Tracker inverter
If the strings are connected with a string
collection box and only one collective line is
used for connection to the inverter, connec-
tion DC+1 (pin 2) and DC+2 (pin 1) must be
bridged.
The cable cross-section of the DC connec-
ting line and bridging wire must be the sa-
me. Bridging the DC- terminal is not
necessary because it is bridged internally.
Set MPP TRACKER 2 to "OFF" when star-
ting for the first time (also possible in the ba-
sic menu subsequently).
If the Multi MPP Tracker inverter is opera-
ted in Single MPP Tracker mode, the cur-
rents of the connected DC lines are
distributed evenly across both inputs.
Single MPP Tracker mode with just one string on a Multi MPP Tracker inverter:
DC-2
DC-
DC-1
max. 18 A
per MPPT
PV 1
PV 2
12
12
34
12
DC+1 DC+2
DC+1
DC+2
PV 1
PV 2
1
DC+1
DC-1
DC+2
DC-
1
1234
22
D1
D1
=
*
*
DC+1
max. 36 A to
a single
DC terminal
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