High Battery Transfer (Hbx); Table 2 Hbx Mode Default Set Points - Alpha Group OutBack Power MATE3 Owner's Manual

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: 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 48 (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 abovethe 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.
Note: The system must be in the Grid Disconnect state to allow HBX default settings to be changed.
900-0117-01-00 Rev A
Table 2 HBX Mode Default Set Points
System Voltage
High Voltage
Low Voltage
Time
IMPORTANT:
HBX Mode will control the master inverter in port 1 of a HUB-4 or HUB-10. The master
will then instruct any stacked slaves to connect or disconnect from the AC input source.
IMPORTANT:
HBX Mode should not be used if
functions have incompatible priorities and will conflict with each other.
12 V 24 V 48 V
13 26 52
12 24 48
1 hour 1 hour 1 hour
GRID USE TIME is used (see page 129). These
MATE3 Settings
127