Product Manual

Operation
900-0198-01-00 Rev A 33
 Settable AC Divert parameters include:
 Low and high DC voltage
 On and off delay
 During variable conditions, the AUX output is triggered no more than once per minute (if voltage conditions are still
met). This prevents rapid nuisance cycling of the AC load.
 AC Divert should not be used as the sole source of battery regulation. If the inverter shuts down or fails, the batteries
could suffer severe damage. This function should be supported by an external regulator.
 If the inverter shuts down due to overload, the AUX output will also shut down. If the inverter load exceeds 30 Aac,
the AUX output will turn off to prevent an overload condition.
 If either the FETs or the capacitors become too hot, the AUX will turn off due to diminished inverter wattage.

AC Drop
activates the AUX output whenever the inverter disconnects from an AC source. It can activate a light or
alarm to show that the shore power is no longer present or that a generator has stopped. Alternately, it could be
used to show that the source has connected.
 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. When the voltage falls
below this set point for a settable delay period, the AUX output turns off. This is the default selection.
 Settable parameters include:
 High DC voltage
 Off delay

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.

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.)
 The AUX output will activate to start the generator when the battery voltage falls to a low set point for a settable delay.
The AUX output is deactivated, shutting off the generator, once the battery voltage rises to a high voltage setting for a
settable delay period.
 Settable Gen Alert 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) function that is found in the system display. For many users, the AGS function 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.

Load Shed
can perform load management. It is intended to turn off designated loads during low battery periods
to conserve remaining battery power.
 When battery voltage rises above a settable high voltage level, the AUX output is activated after a settable delay. The
AUX output is used to energize a larger external relay (normally open) which is connected to non-vital loads. The AUX
output will be deactivated once the battery voltage falls below a low voltage setting for a settable delay period.

Load Shed will turn off when the inverter enters a high-temperature condition or when the AC output voltage drops
below a specific AC voltage for more than 3 seconds. This limit is 15 volts below the setting of the inverter’s output
voltage. For the inverter’s default output voltage of 120 Vac, the limit is 105 Vac. The limit is not otherwise settable.
 Load Shed will turn off if the input current exceeds the Input AC Limit setting while the inverter is using an AC source.
 Settable parameters include:
 Low and high DC voltage
 On and off delay