Support, Operation – Outback Power Systems GS8048 Operator Manual User Manual
Page 12
Operation
10
NOTES:
The Support, Offset, and grid-interactive functions of the Radian are unavailable in this mode.
Any AC fluctuations that are accepted by the inverter will be transferred to the output. The loads will be
exposed to these fluctuations. It may not be advisable to install senstive loads under these conditions.
In this mode, the Radian uses “diode charging”. This function uses exact control of the charger, allowing it to
operate normally despite the quality of the input source. (Other modes may temporarily switch to diode
charging, but
Generator uses it exclusively.) The MATE3 indicates diode charging by displaying
in the
Inverter soft key screen. (See the MATE3 owner’s manual for more information.) When diode charging, the
GS8048 maximum charge rate is limited to 20 Aac (80 Adc).
While charging, the charger will not go silent (see page 22). After completing the charge, it will remain in the
Float charging stage unless this generator is stopped (either automatically or manually) or AC input power is
otherwise removed.
Support
The
Support mode is intended for systems that use the utility grid or a generator. In some cases, the
amount of current available from the source is limited due to size, wiring, or other reasons. If large
loads need to be run, the Radian inverter augments (supports) the AC source, adding inverter and
battery power to ensure that the loads receive the power they demand.
In the MATE3 system display, the
Grid Input AC Limit dictates the maximum AC draw for the Grid
input. The
Gen Input AC Limit sets the maximum draw for the Gen input. This function takes effect if
the AC draw on the appropriate input exceeds its setting.
CHARGING:
In this mode, when the charger is enabled, the Radian will use the AC source to charge the battery
bank. (See page 20.) It will proceed through the entire battery charging cycle. After the end of the
Float timer, it will continue to alternate between Silent and Re-Float stages.
BENEFITS:
The large loads on the system can be powered while staying connected to the input, even if the input is
limited. Battery power prevents overload of the input source, while at the same time limiting the amount of
battery power used.
In this mode, the inverter will offset the loads with excess renewable energy if it is available from the
batteries. (See page 19 for more information on the Offset function.)
This mode has a programmable delay time which will allow an AC source to stabilize before connection. In
the MATE3, this menu item is
Connect Delay. It is available in either the Grid AC Input Mode and Limits or
the
Gen AC Input Mode and Limits menu, depending on which input is being programmed.
NOTES:
IMPORTANT:
If the AC loads exceed the amperage limit setting, the inverter will draw energy from the
batteries. If the loads are sustained, the batteries may discharge to the point of Low
Battery Cut-Out and the inverter may shut down with a Low Battery error. (See pages 15
and 40.) To prevent the loss of backup power, load use should be planned accordingly.
The grid-interactive function of the Radian inverter is unavailable in this mode.
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 amperage setting, the charge rate will be zero.
If the AC loads
exceed the amperage setting, the charger will begin operating in reverse. It will take power
from the batteries and use it to support the incoming AC current.