Outback Power Systems FLEXMAX 80 User Manual

60
PB
20. Application Notes
OutBack Power System GTFX/GVFX Grid-tie settings
In a GFX/GVFX Series Inverter/Charger, FLEXmax 80, HUB, and MATE installation set the FLEXmax 80 to
GT mode in the ADVANCED MENU. GT mode allows the GFX/GVFX to manage the FLEXmax 80 oat
setting ensuring the FLEXmax 80 is always keeping the battery above the sell voltage of the GFX/GVFX.
Grid-tie applications (non-OutBack inverter/chargers)
When selling electricity back to the grid, keep the inverter Sell/Float voltage below the FLEXmax 80
oat voltage. Appropriate values: 0.5 Volts dierence for 24V battery system or 1.0 volt dierence for
48V battery systems.
Positive grounded systems
Telcom applications frequently require a positive grounded system. The FLEXmax 80 switches the
POSITIVE PV and battery leads. Keep these separate. If code allows, ground ONLY the battery positive
lead in this case. Do not connect the FLEXmax 80’s battery plus to the PV plus input while the FLEXmax
80 is running. The OutBack HUB cannot be used in a positive grounded system.

Outback Power Systems FLEXMAX 80 Specifications

General

Brand	Outback Power Systems
Model	FLEXMAX 80
Category	Controller
Language	English