Generator control, Two-wire-start (relay aux terminals), Installation – Outback Power Systems GS4048A Installation Manual User Manual
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Installation
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Figure 22 AUX Connections for Diversion (Example)
Generator Control
Either set of Radian 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 Radian 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.
The
RELAY AUX terminals can most easily perform two-wire generator start. 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 (RELAY AUX Terminals)
The
RELAY AUX terminals can be wired in place of the generator’s start switch as shown in Figure 23.
This method is only advised if the generator’s starting circuit is triggered by continuity. (This circuit
must use fewer than 10 amps.)
CAUTION: Equipment Damage
This circuit has no overcurrent protection. A fuse of no larger than 10 amps must
be installed to protect the circuit. Since the internal circuitry of the
RELAY AUX
terminals does not incorporate overcurrent protection, it is the responsibility of
the installer to ensure the circuit is protected.
Internal failure that results from
lack of protection is not covered by the Radian warranty.
In this example, the
12V AUX terminals drive a
relay that diverts wind power. The relay’s coil is
connected to the
12V AUX terminals. When the
AUX function 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.