Outback FX-R Series Operator Manual

Operation
900-0167-01-01 Rev A 43

AC Divert
activates the
A
UX
output to divert (or “dump”) excess renewable energy to an AC load,
usually an AC device powered by the inverter itself. 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 A
UX output controls a larger relay, which allows current to flow from the
batteries to a dedicated AC load when energized. Diversion is usually used to regulate battery
charging. The AC device is usually wired to the output or load panel and must be left on. It 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.
 The AUX output will automatically turn on to run the loads if the inverter accepts an AC source.
 Settable 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 A
UX output will also shut down. If the inverter
load exceeds 30 Aac, the A
UX output will turn off to prevent an overload condition.
 If either the FETs or the capacitors (see page 54) become too hot, the A
UX will turn off due to
diminished inverter wattage capacity.
Note that even if every function in the menu is set to
Off
, external programming from other
devices may still activate the
A
UX
output. An example is the system display’s AGS function.
The
AUX
functions are summarized in Table 5.
Table 5 AUX Mode Functions
Name Purpose
Triggers
Settable Points
Start Stop
Load
Shed
Operates designated loads
normally; turns off loads in
severe conditions

High Vdc

Low Vdc

High temp

Low output Vac

High input Aac

Low & high Vdc

On & Off delay
Gen
Alert
Starts generator to charge
batteries

Low Vdc

High Vdc

Low & high Vdc

On & Off delay
Fault Signals that the inverter shut
down due to error

Error present

Error cleared None
Vent
Fan
Runs fan to vent batteries
while charging

High Vdc

Below high Vdc

High Vdc

Off delay
Cool
Fan
Runs fan to cool inverter

Internal sensor >
60°C

Internal sensor <
49°C
None
DC
Divert
Turns on DC dump load to
prevent overcharging

High Vdc

Low Vdc

Low & high Vdc

On & Off delay
GT
Limits
Signals disconnect of grid-tied
inverter due to AC conditions

GIP parameters
not met

GIP parameters
met
None
Source
Status
Signals that the inverter
accepted an AC source

AC source
accepted

AC source
disconnected
None
AC
Divert
Turns on AC dump load to
prevent overcharging

High Vdc

AC source
accepted

Low Vdc

High output load

High temperature

Low & high Vdc

On & Off delay