Figure 3-3, Automatic 4-Stage Charging Graph - Magnum Energy Sensata MagnaSine Owner's Manual

Pure sine wave inverter/charger

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falls below 170 VAC (or 85 VAC on either leg) – the charger stops charging to help stabilize the

incoming AC voltage.

The Charge mode provides up to four separate charging stages: Bulk Charging, Absorb Charging,

Float Charging, and Full Charge.

•

Bulk Charging: This is the initial stage of charging. While bulk charging, the charger supplies

the battery with controlled constant current. The charger will remain in bulk charge until

the absorption charge voltage (determined by the Battery Type selection*) is achieved. The

inverter's green LED stays on (solid) to indicate bulk charging.

•

Absorb Charging: This is the second charging stage and begins after the absorb voltage has

been reached. Absorb charging provides the batteries with a constant voltage and reduces the

DC charging current in order to maintain the Absorb Voltage setting. The inverter's green LED

ﬂ ashes once every second (fast ﬂ ash) to indicate absorption charging for 2 hours (determined

by the Battery AmpHrs selection*), then switches to ﬂ oat charging.

•

Float Charging: The third charging stage occurs at the end of the absorb charging time.

While ﬂ oat charging, the charge voltage is reduced to the ﬂ oat charge voltage (per the Battery

Type selection*). In this stage, the batteries are kept fully charged and ready if needed by the

inverter. The inverter's green LED ﬂ ashes once every 8 seconds (slow ﬂ ash) to indicate ﬂ oat

charging. The Float Charging stage reduces battery gassing, minimizes watering requirements

(for ﬂ ooded batteries), and ensures the batteries are maintained at optimum capacity.

•

Full Charge (Battery Saver™ mode): The fourth stage occurs after four hours in the Float

Charging stage. The Full Charge stage is designed to keep batteries fully charged over long

periods, and to prevent excessive loss of water in ﬂ ooded batteries or drying out of GEL/AGM

batteries. In this stage, the charger is turned off and begins monitoring the battery voltage.

If the battery voltage drops low (25.4 VDC or less on 24-volt models, or 50.8 VDC or less on

48-volt models), the charger automatically initiates another four hours of ﬂ oat charging.

Info: If the battery voltage falls to the rebulk voltage (24.2V on 24-volt models or

48.4V on 48-volt models) or lower, the unit will begin another bulk charge.

* These settings in the MS-PAE Series leave the factory with default values (see Table 3-2, Inverter/

Charger Default Values). These default values are adequate for most installations, however if you

determine that some of the values are not adequate they can be changed for your particular system.

The ME-RC50 or ME-ARC remote control may be purchased to adjust these settings.

Voltage

Time

Current