Generator Control; Figure 18 Two-Wire Generator Start (Example) - Outback FX Series Installation Manual

Installation

Generator Control

The AUX terminals can provide a signal to control an automatic-start generator. The control function
can be Advanced Generator Start (AGS), which is situated in the system display. AGS can start the
generator using settings from the system display, or it can use battery readings from the FLEXnet DC
battery monitor. Alternately, the control function can be Gen Alert, which is a simpler function based
directly in the FX inverter. The choice of control function depends on system needs and the capabilities
of each device.
The generator must be an electric-start model with automatic choke. It is recommended to have
"two-wire" start capability. A two-wire-start generator is the simplest type, where the cranking and
starting routine is automated. It usually has a single switch with two positions that is turned ON to start,
OFF to stop.
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
possible to send a 12-Vdc signal directly to the generator. However, this should never be done if it
connects the AUX output directly to the generator's own battery. It is more common to use the AUX
terminals to energize the coil of a 12 Vdc automotive or similar relay.
OBR-16-DIN, the OutBack FLEXware Relay Assembly depicted in Figure 18, 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.
Relay
Coil
Relay
Contact
Starting
Terminals
1
Generator Two-Wire-Start
1
Battery
Generator
Figure 18 Two-Wire Generator Start (Example)
25
900-0197-01-00 Rev A