Operation
900-0167-01-00 Rev A
29
NOTE:
Increment sizes are difficult to define due to varying load characteristics. However, the default
setting, 30 increments, is
approximately
sufficient to detect the load of one compact fluorescent light
(CFL). A load which draws this amount or greater will “wake up” the inverter.
Search mode is not particularly useful with loads requiring continuous power. (These loads include clocks,
answering machines, and similar devices.) “Sleep” operation with these loads is simply a power interruption
or nuisance shutdown.
Search mode may not be useful with loads that are critical or are intentionally operated a large portion of
the time even if they are not continuous. (These loads include computers and similar devices.) The inverter
may “sleep” so rarely that the mode has no benefit.
Some devices may not be easily detected by Search mode.
Search is inoperative if the
UPS
input mode is in use. See page 21 for more information on this mode.
Search mode is ideal for use in small systems where it is critical to conserve battery capacity and avoid
idle draw or “ghost” loads.
To set up Search mode for use:
1.
Turn off all loads.
2.
Activate Search mode with the system display. The inverter should “sleep” with a flashing green STATUS
INVERTER indicator. See page 16.
3.
Determine the smallest load that is to be used and turn it on.
4.
If the load operates, the inverter is active and is producing power. No further adjustments are needed.
5.
If the inverter does not produce power and continues to “sleep”, the sensitivity is set too high. Turn the load
off and lower the
Sensitivity
menu item. Turn on the load and test whether the inverter activates.
6.
Repeat step 5 as needed until turning on the load also reliably activates the inverter.
The pulse duration and the delay both have a time period that is measured in AC cycles. These two
items,
Pulse Length
and
Pulse Spacing
, are adjustable in the same menu as
Sensitivity
. If
Sensitivity
does not achieve the desired results, it may be useful to perform similar adjustments on these items.
Input
When the input terminals are connected to a stable AC source, the FXR inverter will synchronize itself
with that source and use it as the primary source of AC power. Its transfer relay will engage, linking
the AC source directly with the inverter’s output. It can also use the source to charge batteries. (See
Battery Charging on page 33.)
The loads powered by the inverter
must not
exceed the size of the inverter’s transfer relay.
CAUTION: Equipment Damage
Current draw in excess of the transfer relay rating can damage the transfer relay. This
damage is not covered by warranty. Use protective devices of appropriate size.
The inverter has a single AC input. However, it has two sets of AC source settings. With an external transfer
switch, the inverter can be used on more than one AC source. It is common to use utility grid power and a
gas or diesel generator. Other combinations of AC sources are possible.
The inverter’s two input selections can be programmed for separate input modes. The selection (
Grid
or
Gen
) can be chosen in the
Input Type
menu.
The interactions with AC input sources are controlled by the various input modes. The
Grid Tied
mode
