Magnum Energy ME-ARC Owner's Manual page 30

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3.0 Setup
Where do I set my VAC Dropout? It depends on the application and what
you are using as the AC source. The settings not only look at the incoming
voltage level to determine when to transfer, but also determines how quickly
the charger disconnects and starts Inverting based of the fl uctuations of the
incoming AC voltage.
• Dropout = 60 VAC to 100 VAC (For Export inverter Models: Drop-
out = 120 VAC to 200 VAC): Use a VAC Dropout setting from 60 VAC to
100 VAC (Export models: Dropout from 120 VAC to 200 VAC) when the AC
source may have fl uctuations in RMS voltage. These settings attempt to
prevent the charger from disengaging unnecessarily due to poor quality
voltage; and are highly recommended if using a generator for charging. The
transfer time from charge mode to inverter mode is >16 milliseconds when
using these settings.
• Dropout =UPS mode: Use the 'UPS mode' setting when the AC source
is well regulated above 105 VAC (210 VAC for Export inverter models) and the
inverter loads are sensitive to voltage fl uctuations. This setting is intolerant of
voltage fl uctuations and will provide a quick transfer. The transfer time from
charge mode to inverter mode is ≤16 milliseconds when using this setting.
For generator charging, do not use this setting.
Info: If you get nuisance AC disconnects, either change the setting
to 100 VAC or less (Export inverter models: 200 VAC or less), or
obtain a better voltage regulated AC source.
03E Absorb Done Time, Amps or SOC
• 03E Absorb Done Time - This setting is used to determine when the
second stage of battery charging or Absorption Stage is fi nished and transi-
tions to the Final charge stage (see 03G Final Charge Stage). Absorption is
the second stage of the charge process and the batteries will be approxi-
mately 75-80% charged. The remaining 20-25% of the charge is fi nished in
the Absorb mode.
Default Setting: Absorb Done Time = 2.0 Hrs
Info: If the Absorb stage is short or terminated the batteries may not
receive a full charge. In contrast if the Absorb stage is too long the
batteries may be overcharged either scenario may lead to damage
to the batteries. Contact your battery manufacturer to ensure the
best charge settings are used for your type of batteries.
• Set Absorb Done Time - Set Absorb Done Time is used when a specifi c
time is determined to be the best solution for ending Absorption time. When
using time the battery bank size will typically determine how long the Absorb
time setting is. The larger the battery bank the longer the Absorb time to
ensure a full charge to the batteries is accomplished. Taking specifi c gravity
readings of the batteries and adjusting the Absorb time may be needed in
order to obtain the appropriate Absorb time for your battery type and bat-
tery bank size.
Default Setting: Absorb Done Time = 2.0 Hrs
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