Automaxx 600 Watts Wind Turbine, User Manual

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36
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 hours (default) absorb time limit is reached. For
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 the turbine's output and battery system state of charge. The MPPT
operating
modes are displayed through the LED.
Sleeping
Happens when the wind turbine’s voltage is less than the battery voltage
or charger current is below the minimum cutoff (Low cutoff) current. This
may also appear briefly during the day when the MPPT is transitioning
between certain states, and because of other conditions.
Absorb
There is an external DC source (wind generator/hydro) keeping the
battery at or above the absorb set point.