© 2010 Magnum Energy, Inc.
26
3.0 Setup
02 Invert Setup
The following menus 02A - 02D are used to set up only the functions related
to the Inverting mode of the inverter/charger.
02A Search Watts:
Allows you to turn off the Search Watts feature, or
to adjust the power level to determine when the inverter leaves Search
mode. The power level range selection is
Off
,
5W to 50W
. If this feature
is not needed, select
Search=Off
. When search is turned off, the inverter
continuously provides full AC voltage to the loads.
Default setting
-
Search= 5W.
Info:
When the Search Watts feature is active, “
Searching
”
appears on the top line of the LCD display and the green INV
LED will slowly
fl
ash.
What is the Search Watts feature?
This feature is used to help save
battery power by reducing the inverter’s output to search pulses when there
is no detectable load. If a load greater than the wattage level setting turns on
while the inverter is ‘searching’, the inverter will start ‘inverting’ to provide
full voltage on its output.
Should I use the Search Watts feature?
If the inverter can spend a great
deal of time searching (to reduce the power drain on your batteries) and you
can tolerate small loads (less than
fi
ve watts) being OFF, then the Search
mode feature should be used. However, if some small loads (i.e., digital
clocks, satellite receivers, answering machines, etc.,) are required to be on,
then this feature should be turned off (
Search = Off
).
Where should I set Search Watts?
The
Search Watts
setting should be
adjusted to the same power level (or the next lower setting) of the smallest
load that you want to run. If you don’t know the wattage of the smallest load
you want to run, turn the switch for the load on and decrease the
Search Watts
setting until the load comes on and stays on.
Example:
You have reviewed all the loads you want to run and determined
that the smallest load is a 30 watt light. Set
Search = 30W.
Whenever you
turn on any load (because all the loads are greater than 30 watts), the
inverter will stop searching and start inverting to deliver power to the load.
Note:
Even though the Search Watts feature is on, some connected equipment
may draw enough current even while turned off to keep the inverter in the
Inverting mode.
02B LBCO Setting:
The
Low Battery Cut-Out (LBCO)
sets the DC voltage
level that turns off the inverter. This helps protect the batteries from
over-discharge damage. Selections are from
9.0 VDC
to
12.2 VDC
(12-
volt inverter models),
18.0 VDC
to
24.4 VDC
(24-volt inverter models),
or
36.0
to
48.8
(48-volt inverter models). If the battery voltage drops
below the LBCO set-point continuously for more than 1 minute, the FAULT
LED will come on, the inverter will turn off, and the display will show a
‘
Low Battery
’ status. If the battery voltage falls below 8.5 volts (12-volt
models), 17.0 volts (24-volt models) or 34.0 (48-volt models), the FAULT
LED and ‘Low Battery’ status will be immediate.
Default settings: LBCO = 10.0 VDC
(12-volt models),
20.0 VDC
(24-
volt models) or
40.0 VDC
(48-volt models).
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