Connection Variants On Multi-Mpp And Single-Mpp Tracker Inverters; General; Multi Mpp Tracker - Fronius Symo -M Inverter - Fronius Symo Series Installation Instructions Manual

Connection variants on multi-MPP and single-MPP
tracker inverters

General

In the case of inverters with multiple MPP trackers like the Fronius Symo –M, there are 2
independent DC inputs (MPP trackers) available. These two MPP trackers can be wired
with a different number of modules.
NOTE! The number of PV modules per MPP tracker per string connection should be the
same.
There are 3 terminals for DC+ per MPP tracker. In total there are six terminals for DC-.
In the case of inverters with single MPP trackers like the Fronius Eco, there is 1 DC input
(MPP tracker) available. The number of PV modules per string connection should be the
same. For the MPP tracker, there are 6 terminals for DC+ and 6 terminals for DC-.
Multi MPP tracker Multi MPP tracker mode on both MPP tracker inputs:
- Fronius Symo -
M inverter
Connecting two solar module fields to an inverter with multiple MPP trackers
Power categories
Symo 10-12.5 kVA
Symo 15-20 kVA
PV 1 PV 1
PV 2
DC-1 DC-2
* I
DC NENN
DC+1 DC+2
+ +
1
DC DC
+1
1 2 3 1 2
/ MPP
2
DC
-
+2
1 2 3 4 5 6
3
MPP tracker
DC input
MPP1
DC+1
MPP2
DC+2
MPP1
DC+1
MPP2
DC+2
Input current
27 A (I )
DC NOMINAL
16.5 A I( )
DC RATED
33 A (I )
DC NOMINAL
27 A (I )
DC NOMINAL
23