86
Function overview
Device concept
Device design:
(1) Housing lid
(2) Inverter
(3) Wall bracket
(4) Connection area incl. DC main 
switch
(5) Data communication area
(6) Data communication cover
The inverter converts the direct current cre-
ated in the solar modules into alternating 
current. This alternating current is fed into 
the public grid synchronously with the grid 
voltage. 
The inverter has been developed exclusively for use in grid-connected photovoltaic sys-
tems; it is impossible to generate energy independently of the public grid.
Thanks to its design and the way it works, the inverter is extremely safe both to install and 
to operate.
The inverter automatically monitors the public grid. In the event of abnormal grid condi-
tions, the inverter ceases operating immediately and stops feeding power into the grid (e.g. 
if the grid is switched off, if there is an interruption, etc.). 
Grid monitoring involves voltage, frequency and islanding detection monitoring. 
The inverter operates fully automatically. As soon after sunrise as there is sufficient energy 
available from the solar modules, the inverter starts monitoring the grid. When insolation 
has reached a sufficient level, the inverter starts feeding energy into the grid.
The inverter operates in such a way that the maximum possible amount of power is ob-
tained from the solar modules.
As soon as the power available has fallen below the level at which energy can be fed into 
the grid, the inverter disconnects the power electronics completely from the grid and stops 
running. It retains all its settings and stored data.
If the inverter becomes too hot, it automatically reduces the current output power in order 
to protect itself. 
Reasons for the inverter becoming too hot include the ambient temperature being too high 
or inadequate heat dissipation (e.g. if it is installed in a switch cabinet without suitable heat 
dissipation).
Utilization in ac-
cordance with 
"intended pur-
pose" 
The solar inverter is designed exclusively to convert direct current from solar modules into 
alternating current and feed this power into the pubic grid.
The following are deemed to be not in conformity with its intented purpose:
- Utilization for any other purpose, or in any other manner
- Alterations to the inverter that are not expressly recommended by Fronius
- Installation of components that are not expressly recommended or sold by Fronius.
The manufacturer is not responsible for any damages resulting from unintended use.
All warranty claims are voided.
(1) (2) (3)
(4)(5)(6)