Charging Graphs; Figure 4 Charging Stages Over Time; Figure 5 Charging Stages Over Time (24/7) - Outback Power Systems GS7048E Operator's Manual

Operation
charging to a new voltage setting. A square
horizontal dotted line). A triangle
using the previous set point. (The charging may have stopped for any of several reasons.) The battery
voltage must drop to one of several low set points before the inverter resumes charging.
Specialized Charging
Lithium-ion, sodium-sulfur, and similar advanced battery technologies may require charger settings
that are very different from the inverter's defaults or the three-stage cycle in general. The Charging
Steps section describes the individual selections and behavior. All charger settings are adjustable.
The selection range for each step allows very different priorities from the defaults. For example, the
Float voltage could be set higher than the Absorption voltage, or a step could be completely skipped..

Charging Graphs

Figure 4 shows the progression of steps of the default three-stage charging cycle.
Voltage
Absorption (c.v.)
Absorption
Set Point
Bulk
(c.c.)
Float
Set Point
Re-Float
Set Point
No
Charging
c.c. = Constant-Current Stage; charger can deliver up to inverter's maximum (or maximum setting)
c.v. = Constant-Voltage Stage; charger delivers the current needed to maintain voltage; usually tapers
Figure 5 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 Float Timer steps. The charger remains in Float continuously.
The Float stage lasts until the AC source is removed.
Voltage
Absorption (c.v.)
Absorption
Set Point
Bulk
(c.c.)
Float
Set Point
No
Charge
c.c. = Constant-Current Stage; can deliver up to the inverter's limit
c.v. = Constant-Voltage Stage; delivers only the current needed to maintain voltage; usually tapers
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indicates that the inverter has stopped charging and is no longer
Silent
Float
(c.c.)
Time
Figure 4 Charging Stages Over Time
Time
Figure 5 Charging Stages Over Time (24/7)
indicates that the inverter has reached the setting (a
Float Timer (c.v.) Silent Float
(c.c.)
Float (c.v.)
Float
Float Timer Silent
Float Timer
(c.c.)
(c.v.)
No Charge
(Source removed)
900-0145-01-01 Rev A