Outback Power Systems MATE3 Owners Manual - Manual (Page 126)

Programming
124 900-0117-01-00 Rev C
High Battery Transfer (HBX)
In High Battery Transfer (HBX) mode, the system is connected to an AC source such as the utility grid;
however, it will use battery power as the first priority. The AC source is locked out until needed.
In this mode, the system runs on battery-supplied power for as long as the batteries can be sustained. It is
expected that the batteries will also be charged from renewable sources such as PV power. When the
batteries become depleted, the system reconnects to the AC source to operate the loads.
The batteries may be recharged during this time using the renewable source. When the batteries are
recharged to a high enough voltage, the system transfers back to the batteries as the primary source
(hence the name High Battery Transfer).
NOTE: In Radian-class inverters, the Mini Grid input mode can also accomplish this operation; however,
it is not identical to HBX and is not compatible with it. Both functions should not be used at the same
time. HBX is a function of the MATE3 while
Mini Grid is a function of the inverter, which is programmed
using the MATE3. Information on selecting Mini Grid can be found on page 86. Information on
Mini Grid and other input modes can be found in the Radian Series Inverter/Charger Operator’s Manual.
NOTE: For best operation, the inverter’s charger should be turned off when HBX mode is in use. HBX
mode is intended for systems that rely primarily on the renewable energy source for charging. The
settings of HBX mode allow it to disconnect from the utility grid whenever it can charge effectively using
the renewable source. Use of the inverter's charger may interfere with these priorities. This may keep
both HBX mode and the inverter's charger from working effectively.
 See page 56 (the CHARGER hot key) for instructions on shutting off the charger function.
HBX Mode commands the inverter to:
 connect to an AC source if the battery voltage has fallen below the Grid Connect voltage for the amount of time
set in the (connect) Delay set point,
 connect to an AC source if the battery state of charge (SOC) has fallen below the Grid Connect SOC for any
amount of time,
 disconnect the AC source and switch to powering the loads from the battery bank if the battery voltage has risen
above the Grid Disconnect voltage for the amount of time set in the (disconnect) Delay set point, and
 disconnect the AC source and switch to powering loads from the battery bank if the battery state of charge
(SOC) has risen above the Grid Disconnect SOC for any amount of time.
The Delay set points are used to prevent the inverter from switching to grid power in the event
of a sudden, sizable demand for power that may momentarily drop the voltage below the
Grid Connect value.
The SOC set points are only usable by a system equipped with a battery monitor.
Table 3 HBX Mode Default Set Points
System Voltage 12 V 24 V 36 V 48 V
High Voltage 13 26 38 52
Low Voltage 12 24 36 48
Time 1 hour 1 hour 1 hour 1 hour
NOTE: The system must be in the Grid Disconnect state to allow HBX default settings to be changed.