60
900-00275-01-001 Rev A ©2021 OutBack Power. All Rights Reserved.
Operation
Figure 29 Repeated Charging (1
st
and 2
nd
Cycles)
Example of Multiple Cycles
In Figure 29 (Cycle 1), the charger completes Absorption. When the Absorption timer expires, the
charger enters Float stage. The battery voltage decreases to the
Float
setting and is maintained there.
The Float timer begins to run.
The charger is interrupted by the loss of AC input (utility grid power). With loads being supported, the
battery voltage decreases. In this example it does not reach the level of the
Refloat
setting.
Cycle 1 resumes when the AC input is restored. During the power loss, the battery voltage did not
decrease to the
Refloat
setting, so
Float Time
retains the remainder of the previous cycle. The charger
returns to Refloat and proceeds through the rest of Float stage. Cycle 1 completes the Float stage when
its timer expires. It then goes to the Idle condition.
While Idle following Cycle 1, the battery voltage decreases to the
Refloat
setting.
Cycle 2 begins when the
Refloat
setting is reached. The Float timer is reset to its maximum. The
charger resumes operation in Refloat and raises the battery voltage to the
Float
setting.
The charger proceeds uninterrupted through the Float stage. The timer expires and the charger goes
Idle, ending Cycle 2.
The alternation between the Float, Idle, and Refloat steps will continue indefinitely as long as no other
conditions change.
This graph is continued in Figure 30. During the Idle period, the AC input is lost again. The battery voltage
decreases until it reaches the
Rebulk
set point. This causes the charger to prepare a new three-stage
charge (Cycle 3) from the beginning, but it cannot do so until the AC input is restored.
Voltage
Absorption
Set Point
Float
Set Point
Refloat
Set Point
Time
Absorption
timer runs
Cycle 1
Cycle 2
Float
timer
resets
Float timer
begins
Float timer runs
Inverter now charging to a new
set point
Inverter has reached the charging
set point
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
Refloat
Absorption
(end)
Float
(end)
Idle
Refloat
Float (full)
Idle
AC Loss
Float
(start)
Float timer
resumes
(complete)
Remainder of Cycle 1
Summary of Contents for OutBack POWER Mojave OGHI8048A
Page 1: ...Mojave Grid Hybrid Inverter Charger OGHI8048A Operator s Manual...
Page 30: ...30 900 00275 01 001 Rev A 2021 OutBack Power All Rights Reserved User Interface NOTES...
Page 48: ...48 900 00275 01 001 Rev A 2021 OutBack Power All Rights Reserved Operation NOTES...
Page 110: ...110 900 00275 01 001 Rev A 2021 OutBack Power All Rights Reserved Specifications NOTES...
Page 115: ...900 00275 01 001 Rev A 115 Index This page intentionally left blank...
