Sunforce 600 Watt MARINE WIND TURBINE, User Manual

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7
Suggested Battery Charger Set points:
The battery manufacturer should provide you with specific instructions on the following
maintenance and charging regulation set point limits for the specific batteries. The following
information can be used when the manufacturer's information is not available. Note: Higher
settings can be used with non-sealed batteries, but water consumption will be greater and
excessive temperatures when charging may occur.
Sealed Lead Acid – AGM / GEL 12V 24V 48V
ABSORB voltage set point 14.3v 28.6v 57.2v
FLOAT voltage set point 13.6v 27.2v 54.4v
Non-Sealed Lead Acid 24V 24V 48V
ABSORB voltage set point 14.8v 29.6v 59.2v
FLOAT voltage set point 13.6v 27.2v 54.4v
Multi –Stage Battery Charging:
The MPPT charge controller is a sophisticated multi-stage battery charger that uses several
regulation stages to allow fast recharging of the battery system while ensuring a long battery life.
This process can be used with both sealed and non-sealed batteries. The MPPT will
automatically set the charging regulation voltage set points (absorb & float) for the selected
nominal battery voltage, however, always follow the battery manufacturer’s recommended
charging regulation voltages.
The MPPT charging regulation stages correspond to the chart
below.
Bulk:
This stage provides the maximum power to the battery -- voltage increases while charging.
A bulk charge is automatically initiated when the battery voltage is below the absorb and float
voltage set points. The bulk charge will continue until the absorb voltage set point is achieved.
Absorbing: This stage limits the amount of power going to the battery -- the voltage is held
constant. The absorb charge will continue for the duration of the bulk cycle or until the 2 hour
(default) absorb time limit is reached. Example, if a bulk charge takes 1 hour to reach the absorb
voltage set point then the absorb charge will continue for 1 hour as well. However, if a bulk
charge takes 3 hours to reach the absorb voltage set point then the absorb charge will last for 2
hours only. A bulk charge will be re-initiated if the battery voltage is not sustained at the absorb
voltage set point.
Float:
This stage reduces the charging voltage to prevent overcharging of the batteries
A float charge follows after the absorb charge is completed. The MPPT will not re-initiate
another bulk charge if the float voltage set point is not sustained, however, it will continue to
charge the battery until the float voltage set point is achieved. Note: A bulk charge can be
initiated if the battery voltage falls below the float voltage set point if the re-bulk (ReBV) voltage
option is set.
Understanding the various modes:
The modes of operation will change occasionally during the day based on turbines output and
battery system state of charge. The MPPT operating modes are displayed through the LED’s.