Installation Guide

Installation
900-0160-01-01 Rev B 35
Generator Control
Either set of Radian
A
UX
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. Note that AGS cannot be used if the system
display is removed.
Alternately, the control function can be
Gen Alert
, which is a simpler function based directly in the
inverter. The choice of 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
R
ELAY
A
UX
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
O
N
to start,
O
FF
to stop.
Two-Wire Start (RELAY AUX Terminals)
The
R
ELAY
A
UX
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
R
ELAY
A
UX
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 other cases, or in the case of a three-wire-start generator, the inverter should use the
12V
A
UX
terminals instead, in conjunction with a three-to-two wire converter. (See pages 36 and 37.)
Figure 23 Two-Wire Generator Start (Relay Aux)
Starting
Switch
Two-Wire-Start
Generator