Outback Power Systems GS3548E Installation Manual - Manual (Page 29)

Installation
900-0144-01-01 Rev A 27
In other cases, or in the case of a three-wire-start generator, the inverter should use the 12V AUX
terminals instead, in conjunction with a three-to-two wire converter. (See pages 27 and 28.)
Figure 23 Two-Wire Generator Start (RELAY AUX)
Two-Wire-Start (12V AUX Terminals)
The 12 Vdc signal provided by the 12V AUX terminals 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 the 12V AUX terminals to energize the coil of a 12 Vdc automotive or similar relay.
The OutBack FLEXware Relay Assembly depicted in Figure 24 is sold for this purpose. The relay
contacts can serve in place of the generator’s start switch. The battery shown in Figure 24 is shown for
clarity. Usually 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 24 Two-Wire Generator Start (12V AUX)
RELAY AUX
Terminals
Starting
Switch
Two-Wire-Start
Generator
Starting
Terminals
Generator
Battery
Relay
Contacts
Relay
Coil
Two-Wire-Start
Generator
1
1
12V AUX Terminals