Outback Power Systems GFX International Series Installation Manual - Manual (Page 27)

Installation
900-0111-01-00 Rev B 25
Automatic Generator Start (AGS)
The AUX terminals can be used to perform “two-wire” generator start. A two-wire-start generator is
the simplest type, where most of the circuits are automated. It usually has a single switch with two
positions that is turned ON to start, OFF to stop.
Either the system display or the FLEXnet DC can be programmed to perform automatic generator start
using the AUX terminals. See the system display or FLEXnet manuals for programming instructions.
Two-Wire-Start
The 12 Vdc signal provided by the AUX output can be switched on and off to provide a start signal. It
is not usually recommended to connect the AUX terminals directly to the generator, but to use them
to energize the coil of a 12 Vdc automotive or similar relay.
Depicted is the OutBack FLEXware Relay Assembly, which is sold for this purpose. The relay contacts
can serve in place of the generator’s start switch. The battery shown below is depicted for clarity. In
most cases, it is part of the generator’s internal starting circuit and is not an external component.
The drawing below is one example of a possible arrangement. Specific arrangements, relays, and
other elements depend on the requirements of the installation and of the generator.
Figure 16 Two-Wire Generator Start (Example)
Starting
Terminals
Generator
Battery
Relay
Contacts
Relay
Coil
Two-Wire-Start
Generator
1
1