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Operation
28 900-0112-01-00 Rev A
connected to non-vital loads. When the relay is energized, the loads are disengaged to conserve battery
power. LoadShed will also occur when the inverter enters a high-temperature condition or when the AC
output voltage drops below 200 Vac for more than three seconds. There is a three-minute fixed delay
before the AUX output is deactivated.
This function has a settable DC voltage parameter.
Remote
is intended for functions to be introduced in the future. Currently it is used when the MATE uses
AGS to control the AUX output. Although the MATE can control the AUX even when one of the other AUX
functions is enabled, selecting
Remote
keeps the inverter from interfering with the MATE.
Note that even if the auxiliary functions are disabled, the AUX output may still be triggered by an
external function such as AGS (see below).
System Display-Based Functions
Automatic Generator Start (AGS)
As noted under the GenAlert feature (see page 27), the system is capable of starting a generator.
GenAlert simply starts and stops the generator based on battery voltage. For more advanced control,
the inverter system can use the Automatic Generator Start (AGS) feature, which runs through the
entire three-stage charging cycle. It can start according to battery voltage, inverter load, time of day,
and other criteria. It has a quiet time feature which restricts the generator from starting at
inconvenient times. Additional features are also available.
Because this is an advanced function with capabilities beyond the inverter’s GenAlert, the control logic
for AGS is based in the system display, not the inverter. See the system display manual for more
information on programming and using the AGS mode.
High Battery Transfer (HBX)
In 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 system will be supplied by 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: The inverter’s charger should be turned off. HBX mode is intended to use only the renewable
source for charging batteries. Use of renewable charging is the motivator for returning to battery (and
renewable) operation. Use of the inverter’s charger interferes with this priority. It also may not charge
effectively.
Because this is a system-wide function and not a function of individual inverters, the control logic for
HBX is based in the system display. See the system display manual for more information.
Grid Use Programming
The inverter system is capable of connecting to, or disconnecting from, the utility grid based on time
of day. It can also be programmed to connect at different times on weekdays and on weekends.
Because this is a system-wide function and not a function of individual inverters, the control logic for
Grid Use is based in the system display. See the system display manual for more information.