Charge Cycle; Figure 5 Charging Stages Over Time; Figure 6 Charging Stages Over Time (24/7) - OutBack Power FXR2012E Operator's Manual

Operation
Limiting Charge Current (Multiple Inverters)
It is not advisable to set Charger AC Limit less than 6 Aac in a stacked system. The Power Save
function requires the master to activates the slave chargers in sequence only when the charge current
exceeds 5 Aac. If the setting is less than 6, Power Save will not activate any other chargers.
For more information on this function, see the Power Save section beginning on page 42.
In some systems, lower currents may be required due to battery bank size or other reasons. To achieve
lower currents, chargers can be individually set to Off so that the master inverter does not activate them.
For the location of the Charger Control command, see the menu tables beginning on page 72.
For more information on controlling the charger limits in a stacked system, see page 69.

Charge Cycle

The FXR inverter uses a "three-stage" battery charging process with Bulk, Absorption, and Float stages.
These stages follow a series of steps, which are shown on graphs and described beginning below. The
inverter's factory default settings are intended for three-stage charging of lead-acid batteries.
Charging Graphs
Figure 5 shows the progression of steps of the three-stage charging cycle.
Voltage
No Charge
Absorption
Set Point
Float
Set Point
Re-Float
Set Point
Inverter now charging to a new set point
Inverter completed charging; the previous set point is no longer in use
Figure 6 shows the charge cycle used by the inverter when the Float Time menu item is set to 24/7.
This setting eliminates the Silent and Refloat steps. The charger remains in Float continuously.
The Float stage lasts until the AC source is removed.
Voltage
No Charge
Absorption
Set Point
Float
Set Point
Inverter now charging to a new set point
30
Bulk Absorption Silent
Time
Figure 5 Charging Stages Over Time
Bulk Absorption
Time
Figure 6 Charging Stages Over Time (24/7)
ReFloat Float Silent ReFloat
Inverter has reached the charging set point
Float
Inverter has reached the charging set point
Silent Refloat
Float
No Charge (Source Removed)
900-0169-01-00 Rev B