Installation
and
Operation
Manual
12
﹡
Mixed input mode: two groups of different PV arrays may be
connected to input end of inverter, where one group of PV arrays is
required to lead out two lines of parallel input terminal and
connected to terminal PV1/PV2 at input side of inverter, while the
other group is connected to terminal PV3 at input side of inverter.
Figure 6: Mixed Input Mode
Users are required to set the item “Input Mode” under LCD
menu correctly based on actual conditions of photovoltaic
generating system and confirm that the mode of connection at
input side is consistent with setting (refer to 7.4.1).
If both input and output wirings are correct and the power grid is free of
abnormal conditions, the inverter will enter waiting mode. The grid
connection of inverter will be started fully automatic. After PV voltage
is higher than V
pv
, count down for grid connection will be started
automatically for controller and prepare for grid-connected operation
after delayed for T
d
. Manual setting is available for both V
pv
and T
d
through LCD panel.
5.3 System Shutdown
If grid-connected power of inverter is smaller than 100W
continuously, the alarm of “zero power” will emerge. After alarming
for one minute, the inverter will cut away from the grid and reenter
waiting mode.
The inverter will cut away from the grid upon discovery of any
abnormal condition during the grid-connected process.