Outback FXR2012A Operator's Manual page 38

Operation
Voltage
Absorption
Absorption
Set Point
Float
Set Point
Re-Float
Set Point
Absorption
timer runs
Time
Inverter now charging to a new set point
Inverter has reached the charging set point
Figure 8
Example of Multiple Cycles

In Figure 8 (Cycle 1), the charger initially completes Absorption. When the Absorption timer expires, the
charger goes Silent until battery voltage decreases to the Re-Float setting. The Float timer is reset to its
maximum. The charger proceeds through Refloat and Float until it is interrupted by a loss of AC power.

Cycle 2 begins when the AC source is restored. During the AC loss, the battery voltage did not decrease to
the Re-Float setting, so Float Time retains the remainder of the previous cycle. The charger returns to
Refloat and proceeds through the Float stage. Cycle 2 completes the Float stage when its timer expires. It
then goes Silent.
Note that in Cycle 1, Absorb Time had expired. It was not reset afterward and retained a "remaining run
time" of zero. The Bulk and Absorb stages do not occur on subsequent cycles until the timer reads
something other than zero.

This graph is continued in Figure 9. During the Silent period AC is lost again. The battery voltage decreases
until it reaches the Re-Bulk set point. This causes the charger to prepare a new three-stage cycle from the
beginning, but it cannot do so until the AC source is restored.
38
Cycle 1
Silent Refloat Float
Float timer
Float timer runs (part)
resets
Inverter completed charging; the previous set point is no longer in use
Inverter waiting to charge when AC restored; the previous set point is still in use
Repeated Charging (1
Cycle 2
AC Loss AC Loss
Refloat
Float
Float timer runs
st and 2 nd Cycles)
Silent
900-0167-01-00 Rev A