Installation Manual

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3.0 Operation

Operating Modes

The MM-AE Series inverter/charger has two normal operating rou-

tines; Inverter Mode, which powers your loads using the batteries,

and Standby Mode, which transfers the incoming AC power (i.e.,

utility power or a generator) to power your loads and also uses this

incoming power to recharge the batteries. This inverter also includes

an extensive protection circuitry that shuts down the inverter under

certain fault conditions.

Inverter Mode

When the inverter is ﬁ rst powered up, it defaults to the OFF mode.

The

momentary ON/OFF power switch (

Figure 2, Item 2) must be lightly

pressed to turn the inverter ON. Subsequently pressing this switch

alternately turns the inverter OFF and ON.

Inverter OFF - When the inverter is OFF, no power is used from

the batteries to power the AC loads and

the status LED will be

OFF. If AC power from an external source (utility or generator)

is connected and qualiﬁ ed on the inverter’s AC input, this AC in-

put power will pass through the inverter to power the AC loads.

However, if this AC power is lost, the AC loads will no longer be

powered because the inverter is OFF.

When the inverter is turned ON, it operates either by “Searching”

or “Inverting”, depending on the connected AC loads.

Searching - When the inverter is ﬁ rst turned ON, the automatic

Search feature is enabled. This feature is provided to conserve

battery power when AC power is not required. In this mode, the

inverter pulses the AC output looking for an AC load (i.e., electrical

appliance). Whenever an AC load (greater than 5 watts) is turned

on, the inverter recognizes the need for power and automatically

starts inverting. When there is no load (or less than 5 watts) de-

tected, the inverter automatically goes back into search mode to

minimize energy consumption from the battery bank. When the

inverter is “Searching”, the inverter’s green LED ﬂ ashes (fast).

Info: The factory default value for the Search feature

is 5 watts, it can be turned off or adjusted from 5 to 50

watts using the ME-RC50 remote display.

Inverting - When a load greater than 5 watts is connected to the

inverter output, the MS Series “inverts” the DC power from the bat-

tery and supplies 120 VAC power to your sub-panel. The

inverter’s

green LED ﬂ ashes once every 2 seconds (medium ﬂ ash) to indicate

it is inverting. The

amount of time the inverter can be inverting

and

providing power is directly related to the amount of AC loads

that are connected and the capacity of the battery bank.

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3.0 Operation