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GRIDINTERACTIVE FX SERIES INVERTER/CHARGER PROGRAMMING
NOTE: Please see the FX and VFX Series 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.
Up to two grid-interactive FXs can be combined and wired or “stacked.”
• Stacking FXs does not refer to physically placing one FX on top of another, but 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. The loads and demands of the system
determine when and which Slaves are used. A Slave FX assists when the load demands are more
than the Master FX can handle alone.
• 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
misidentied.
An easy rule to remember is any FX wired to a specic phase or leg must be programmed to that
phase.
Stacking Options
• The Grid-Interactive FX Series Inverter/Chargers can be stacked in Classic Series only, which is limited
to two grid-interactive FXs.
• 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.
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