The three stages charging method works well with the chemical reaction that occurs as a battery
is being charged. When a battery is more discharged, a regulated maximum current can be
applied, since there is a lot of material available for the reactions to occur.
As the battery refills, less and less chemical material is available for the reaction. By using PWM
to slowly reducing the charge current, while maintaining a preset high voltage, the battery is
more closely refilled at the reaction rate of the chemicals. Finally, the Float voltage keeps the
battery fully charged at all times taking care of the self discharge .
4.2
Equalization Charging Mode (Automatic or Manual)
WARNING:
Equalization Charging is only for Wet-type Lead Acid Battery.
The Equalization Charging Voltage is factory pre-set to the Bulk V 1 Volt.
The battery manufacturer should be consulted. Clean, distilled water will need to be added to the
battery AFTER the equalization process.
4.2.1 Automatic Equalization Charging
Automatic Equalization charge is only available when battery voltage is higher than the Low
Voltage Disconnect (LVD) voltage , see 4.3.1.
To set Automatic Equalization Charging, set the dip switch 2 to OFF position
.
The PV Charge Controller will perform Equalization charging for 2 hours once every 30 days
During equalization charge , it can be stopped any time by pressing the Reset button
once and
the controller will return to the charging mode before the Equalization charge.
4.2.2 Manual Equalization Charging
Set the Night-Light Mode , dip switch 1 to off position.
P
ress and hold the Reset button for 10seconds and the equalization charge will go on for two
hour.
During equalization charge , it can be stopped any time by pressing the Reset button
once and
the controller will return to the charging mode before the Equalization charge.
4.3 12V DC Load Terminal – Control Mode
The 12V DC load terminal is designed for low power DC load such as street light.
It prevents over-discharging the battery and has 10 Night-Light timer programs.
4.3.1 Low Voltage Disconnect (LVD)
When the battery voltage is lower than the Low Voltage Disconnect (LVD) setting, the LED will
blink orange once every 2 seconds. After it has flashed several times (up to 5), the load will be
cut off. After the load is cut off, user can press the Reset button once to switch on the load for a
grace period of 10 minutes for emergency purpose.
4.3.2 Low Voltage Reconnect (LVR)
When the battery voltage is higher than Low Voltage Reconnect (LVR) setting, the controller
will automatically reconnect the load.
4.3.3 NIGHT-LIGHT Mode Programs
In the night-light mode, we have 10 selections.
To Activate the NIGHT-LIGHT Mode, switch the dipswitch 1 to ON position.
Then, use the lighting programmer to select one of the night-light mode selections.(see Table 5)
P.6
