Operation – Outback Power Systems GS8048 Operator Manual User Manual
Page 33
Operation
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Gen Alert is used as a controller for an AC generator with a remote start feature, although it has limited
functionality. (The generator recharges batteries using the inverter’s battery charger.)
∼ When the battery voltage falls to a low set point for a settable delay, the AUX output is activated. The
AUX output is used to energize an external relay. The relay activates the remote start/stop circuit on the
generator. (This is illustrated in the Radian Series Inverter/Charger Installation Manual.) The AUX output is
deactivated once the battery voltage rises to a high voltage setting for a settable delay period.
∼ Settable parameters include:
• Low and high DC voltage
• On and off delay
∼ Gen Alert control logic is located in the inverter. It has the advantage of functioning when the system
display is removed. However, it may not completely charge the batteries and does not have all the
advantages of the Advanced Generator Start (AGS) feature that is found in the system display. For many
users, the AGS feature may prove more useful than Gen Alert. Gen Alert, however, could be used as a
literal “Generator Alert”, a signal to the user to manually start a generator.
Fault activates the AUX output when the inverter shuts down due to an error condition (see page 40). It can
activate a light or alarm to show that the inverter has failed. With the appropriate devices, it could send an
alarm signal through a radio, pager, or telephone dialer.
∼ This function does not have settable parameters.
Vent Fan activates the AUX output in response to a high DC (battery) voltage set point. It can run a small
fan to ventilate the battery compartment to eliminate gases that result from battery charging. (This is
illustrated in the Radian Series Inverter/Charger Installation Manual.) When the voltage falls below this set
point for a settable delay period, the AUX output turns off.
∼ Settable parameters include:
• High DC voltage
• Off delay
Cool Fan activates the AUX output when the inverter reaches a high internal temperature. It is intended to
trigger a small external fan for additional cooling. See the Warning Troubleshooting table on page 41 for a
description of the fan criteria.
∼ This function does not have settable parameters.
DC Divert activates the AUX output to divert (or “dump”) excess renewable energy to a DC load, such as a
resistor, a heater, or a fuel cell. This prevents overcharging of the batteries. This function can serve as rough
charge regulation for an external charging source.
∼
When battery voltage rises above a settable high voltage level, the AUX output is activated after a
settable delay. The AUX output controls a larger, external relay. When energized, the relay allows
current to flow from the batteries to a dedicated DC load. (This is illustrated in the Radian Series
Inverter/Charger Installation Manual.) The resistor or load must be sized to dissipate all of the energy
from the renewable source if necessary. Diversion will turn off following a delay when a low DC voltage
setting is reached.
∼ Settable parameters include:
• Low and high DC voltage
• On and off delay
GT Limits activates the AUX output as an alert that the utility grid does not meet Grid Interface Protection
parameters for the grid-interactive function (see page 11). It can activate a light or alarm to show that the
grid-interactive function has shut down and that there may be problems with the grid. The AUX output will
cycle on and off if grid parameters are met and the reconnection timer is counting down.