Operation
900-0167-01-00 Rev A
19
NOTES
:
IMPORTANT:
The inverter will draw energy from the batteries when the loads exceed the
appropriate
AC Limit
. With sustained loads and no other DC source, the batteries may
discharge to the Low Battery Cut-Out point. The inverter will shut down with a Low
Battery error. (See pages 27 and 62.) To prevent the loss of power, load use should be
planned accordingly.
IMPORTANT:
A “noisy” or irregular AC source may prevent
Support
from working normally. The
inverter will transfer the power, but will not support the source, charge the batteries, or
interact with the current in any other way. This problem is more common with
generators smaller than the wattage of the inverter.
A programmable delay time is available which will allow an AC source to stabilize before connection. In the
MATE3, this menu item is
Connect Delay
. It is available in both the
Grid AC Input Mode and Limits
and the
Gen AC Input Mode and Limits
menus, depending on which input is being programmed.
Because the inverter limits the current draw from the AC source, it will reduce the charge rate as necessary
to support the loads. If the loads equal the appropriate
AC Limit
setting, the charge rate will be zero.
If the AC loads
exceed
the
AC Limit
setting, the Support function is activated. Instead of charging, the
inverter will take power from the batteries and use it to support the incoming AC current.
The
Support
function is not available in any other input mode.
Grid Tied
IMPORTANT:
Selling power to the utility company requires the authorization of the local electric
jurisdiction. How the utility company accommodates this will depend on their policies
on the issue. Some may pay for power sold; others may issue credit. Some policies may
prohibit the use of this mode altogether. Please check with the utility company and
obtain their permission before using this mode.
The
Grid Tied
mode allows the FXR inverter to become grid-interactive. This means that in addition to
using power from the utility grid for charging and loads, the inverter can also convert excess battery
power and sell it to the utility grid. Excess battery power usually comes from renewable energy
sources, such as PV arrays, hydroelectric turbines, and wind turbines.
NOTE:
This mode is not available in 12-volt FXR models. It does not appear on the system display’s
list of available input modes.
The grid-interactive function uses Offset operation. See page 42 for more information.
BENEFITS
:
Excess power is returned to the utility grid.
The inverter will offset the loads with excess renewable energy if it is available from the batteries.
If the excess energy is greater than the AC demand (the load size), the excess will be sold to the grid.
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