10
2-1 Operating Modes
There are three distinct operating modes programmed into each SunWide. Different from
SunStar, only one mode of operation being selected for an individual unit, SunWide can
be operated at Solar Battery Charging mode and DC Load Control or Lighting control
mode at the same time.
Solar Battery Charging
The energy output of a solar array is used for recharging the system battery.
The SunWide manages the charging process to be efficient and to maximize the life of
the battery. Charging includes a bulk charging stage, PWM absorption, float and
equalization.
DC Load Control
When set for DC load control, the SunWide powers loads from the battery, and protects
the battery from over-discharge with a current compensated LVD (low voltage load
disconnect).
Lighting Control
When set for lighting control, the SunWide would detect day and night and measure the
length of night at different time and area zone. The desired lighting hours can be set for
the precise control to turn on and turn off the light in order to achieve power saving.
2-2 Adjustability of Solar Battery Charging
Seven DIP switches permit the following parameters to be adjusted at the installation site:
DIP Switch
Solar battery charging
1 2 Select
Battery
Voltage
OFF OFF
48V
system
ON OFF
24V
system
OFF ON
12V
system
3~5 Standard
battery
charging
programs
6 (OFF)
Manual Equalization
(ON)
Auto Equalization
7
(OFF)
Load
Control
(ON)
Lighting
control
PWM Battery Charging
PWM (Pulse Width Modulation) battery charging is the most efficient and effective
method for recharging a battery in a solar system.
Selecting the best method for charging your battery together with a good maintenance
program will ensure a healthy battery and long service life. Although the SunWide’s
battery charging is fully automatic, the following information is important for getting the
best performance from your SunWide controller and battery.