Magnum Energy ME-ARC Owner's Manual page 32

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3.0 Setup
• 03F Max Charge Time: Max Charge Time is the maximum time the
charger will operate in either the Bulk or Absorption mode. Once the charger
reaches the Max Charge Time it will transition to the Final Charge Stage as
set in 03G Final Charge Stage.
Default Setting: Max Charge Time = 12.0 Hours
Info: Set the Max Charge Time to a higher setting than the fol-
lowing menus in order to make sure a complete charge cycle is ac-
complished; 03E Absorb Done Time; 03E Absorb Done Amps; 03E
Absorb Done SOC, and 04F Max Gen Run Time. Max Charge Time
has priority over these menus and will stop the charge cycle when
the Max Charge Time setting is satisfi ed.
Example: The Max Charge Time is set for 6.0 Hours, but menu 03E Absorb
Done Time is set for 8.0 Hours. The charge cycle will stop after 6.0 Hrs as set
by the Max Charge Time, and not fi nish the Absorb Done Time of 8.0 Hours
• 03G Final Charge Stage - Final Charge Stage is the stage the charger
will transition to after the Absorb Done stage as set in menu 03E Absorb
Done. There are 3 choice for the Final Charge Stage; Multi-Stage, Float and
Silent.
Info: Final Charge Stage is only used as the Final Charge Stage
when Multi-charge is selected in menu 02 CHG Control.
Default Setting: Set Final Charge Stage = Multi
• Set Final Charge Stage = Multi (Multi-Stage): The Multi Final Stage
transitions from the Absorb stage to Float. Once in the Float stage for 4 hours
with no DC load on the batteries the charger will enter the "Full Charge" stage.
In the "Full charge" mode the charger automatically goes into a standby mode
(stops charging but is still on and active) and monitors the battery voltage.
The charger will remain in the Full charge stage until the battery voltage
drops below 12.7 VDC for 12v batteries, 25.4 VDC for 24-volt batteries and
50.8 VDC for 48-volt batteries at which time it will return to the Float stage.
These battery voltages are the fully charged voltages of a battery at rest.
The charger will continue to cycle between Float and Full charge as long
incoming AC is available.
Info: The "Full charge" stage will help reduce water consumption
during long charge cycles in fl ooded batteries. If another charge
source such as PV or wind is charging the batteries above the fully
charged voltage the charger will remain in the Full charge mode.
Why should I use the Multi-Stage? Multi-Stage is the most commonly
used charge mode and is suitable for most applications and will assure a full
charge to the batteries without overcharging. If there is another alternate
charge source charging the batteries such as PV, wind or hydro then Multi mode
will use the inverter/charger to complete a full charge. The inverter/charger
will transition to Full Charge and then the alternate charge source will then
maintain the battery voltage. If the alternate source is unable to maintain
the voltage, the charger will enter fl oat mode for another 4 hour period. The
"Full Charge" feature in the Multi mode also helps reduce water consumption
in fl ooded batteries when left in the charge mode for extended periods, such
as in a backup power application.
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