Xantrex Technology MS2000 - Manual (Page 22)

Introduction
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Built-in Charge Formulas For the inverter to perform at the highest level, the
batteries must be charged correctly. The MS2000 has optimized algorithms for
flooded, gel, and AGM batteries.
Battery Temperature Sensor Since battery temperature is a key factor in
correct charging, the charging formula must be adjusted (automatically and
continuously) according to the actual battery temperature to ensure that batteries
are fully charged, but not overcharged. For this reason, Xantrex has included a
battery temperature sensor with your MS2000 Sine Wave Inverter/Charger and
has temperature compensated the charge formula.
Manual Equalization Over a period of time, the cells in a flooded battery can
develop uneven chemical states. This can result in a weak (undercharged) cell
which, in turn, can reduce the overall capacity of the battery. To improve the life
and performance of a non-sealed, flooded battery, the MS2000’s multi-stage
charging cycle includes a manual equalize mode that can be used, if recommended
by the battery manufacturer.
Dead Battery Charging Another feature that the MS2000 includes is dead
battery charging. The MS2000—unlike many chargers— has the ability to
recharge batteries even if the battery voltage is very low.
Load Management The MS2000 has a built-in transfer relay that connects AC
input from the utility grid, generator, or inverter output to your loads. Because the
usual AC power sources such as marinas or small generators often have limited
current availability, having the capability to manage your AC loads is extremely
valuable. The MS2000 provides a number of features to facilitate this:
• The charger is power factor corrected to use AC current as efficiently as
possible and only requires 15 amps to provide rated charger output.
Minimizing the AC current used by the charger means more current is
available for your AC loads.
• MS2000 uses a power share feature which monitors the AC load on the
system. It reduces the charge current and gives priority to the AC load to
avoid nuisance tripping of the breaker.
• Occasionally, AC input sources have low voltage. To avoid loading these
weak sources any further, the charger automatically reduces its AC current
draw as the AC voltage approaches the minimum acceptable level.
Echo Charger By default, the built-in Echo Charger is enabled by the MS2000
to charge an engine battery when the main charger is enabled and operating in
bulk or absorption mode. The Echo Charger may be disabled through the System
Control Panel.