Outback Power Systems GFX International Series Installation Manual - Manual (Page 26)

Installation
24 900-0111-01-00 Rev B
AUX Wiring
The AUX+ and AUX– terminals are a switched 12 Vdc supply. The AUX can respond to many criteria
and control many functions. These include cooling fans, vent fans, load diversion, fault alarms, and
automatic generator control. The AUX output can also be controlled externally through the system
display. (For generator control, see the next page. For all other functions, see the system display
manual and the International Series GFX Operator’s Manual.) The AUX output can only control one
function at a time.
The terminals can supply up to 0.7 amps at 12 Vdc (8.4 watts). This is sufficient to drive a small fan, or a
relay which can control a larger device. The terminals accept up to 2.5 mm2 (#14 AWG) wire.
The AUX circuit contains electronic overcurrent protection, which resets after being overloaded. No
additional fuses are required for the AUX terminals.
Figure 14 AUX Connections for Vent Fan (Example)
Figure 15 AUX Connections for Diversion (Example)
In this example, the AUX output drives a relay
that diverts wind power. The relay’s coil is
connected to the AUX+ and AUX– terminals.
When the AUX output closes the relay (based on
battery voltage), the relay diverts the excess
wind power to a water heating element.
Relay
Element
Turbine
Note: Relays and elements shown are examples only
and may vary depending on the installation.
In this example, the AUX
directly drives a 12-volt vent
fan. The + and – wires on
the fan are connected to the
AUX+ and AUX– terminals.
Fan
The AUX LED
illuminates when the
AUX output
becomes active.