3.0 Operation; Operating Modes; Inverter Mode - Magnum Energy MMS1012 Owner's Manual

3.0 Operation

Operating Modes

The MMS Series inverter/charger has two normal operating routines;
Inverter Mode, which powers your loads using the batteries, and
Standby Mode, which transfers the incoming AC power (i.e., shore
power or a generator) to power your loads and also uses this incoming
power to recharge the batteries. This inverter also includes an exten-
sive 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.
momentary ON/OFF power switch
pressed to turn the inverter ON. Subsequently pressing this switch
alternately turns the inverter OFF and ON.
• Inverter OFF -
the batteries to power the AC loads and
OFF. If AC power from an external source (shore power or genera-
tor) is connected and qualifi ed on the inverter's AC input, this AC
input 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 MMS Series "inverts" the DC power from
the battery 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
inverting and providing power is directly related to the amount
of AC loads that are connected and the capacity of the battery
bank.
© 2010 Magnum Energy, Inc.
(Figure 3, Item 2)
When the inverter is OFF,
amount of time the inverter can be
3.0 Operation
must be lightly
no power is used from
the status LED will be
27
The