Outback Power Systems GVFX Series Inverter/Charger Programing Manual - Manual (Page 37)

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grID-INTErACTIvE FX SErIES INvErTEr/CHArgEr PrOgrAmmINg
Note: Please see the GTFX and GVFX LA Series Grid-Interactive Inverter/Charger Installation Manual to install,
wire, and connect each FX Series Inverter/Charger. This programming manual assumes all FXs have
been installed and are ready to program according to the way they were wired. To familiarize yourself
with the programming concepts, please read through the entire manual before programming your
system.
• Stacking FXs does not refer to physically placing one FX on top of another. It refers to how they are
wired within the system and then programmed for operation. Stacking allows all the FXs to work
together as a single system.
• Stacking assigns the FXs to power individual legs of the system and to operate at certain times; this
order is assigned using the MATE.
Note : An OutBack MATE with a code revision of 3.30 or higher is required to recognize and program
Grid-Interactive FXs. When multiple FXs are used, each needs to be assigned a status—Master or Slave
(at least one FX must be a Master).
• The Master FX is the primary and most heavily used unit. A Slave FX assists during charging or selling,
when the Master cannot handle all of the power..
• This is an orderly process as long as the user assigns each FX correctly. This is mainly a matter of
paying attention to the Port number for each FX when programming with the MATE.
Stacking Concerns
FXs should be wired and stacked appropriately to their individual power system. Problems can occur
when:
• An FX is incorrectly wired.
• An FX plugged into a HUB Port is mistakenly programmed (assigned the wrong status) or
misidentified.
An easy rule to remember is any FX wired to a specific phase or leg must be programmed to that
phase.
Stacking Options
• The Grid-Interactive FX Series Inverter/Chargers can be stacked in Classic Series, or in Three-Phase.
Series stacking allows no more than two inverters in a system. Three-Phase stacking allows no more
than three inverters in a system.
• A HUB-4 or HUB-10 must be included to stack grid-interactive FXs. The Grid-Interactive FX cannot do
time-of-day selling.
• If the utility grid fails, the GTFX or GVFX seamlessly transfers the loads to the battery bank. When
the utility grid reappears, the Grid-Interactive FX automatically recharges the battery bank in case of
future power outages.
Note: The FW-X240 Auto Transformer cannot be used for stacking with a Grid-Interactive FX system.
The FW-X240 can be used to step-up the AC output of a single Grid-Interactive FX system, however.