Installation
900-0021-01-00 Rev B
29
AUX Wiring
The Radian inverter has two sets of terminals which can respond to different criteria and control many
functions. These include cooling fans, vent fans, load diversion, fault alarms, and the Advanced
Generator Start (AGS) function.
The 12V AUX terminals are a switched 12 Vdc power supply. They can control any of the Auxiliary
Output functions available in the MATE3.
The 12V AUX terminals can supply up to 0.7 amps at 12 Vdc (8.4 watts). This is sufficient to drive a
small fan or a relay controlling a larger device. The terminals accept wire up to #14 AWG (0.0032 in²) or
2.5 mm². This circuit contains electronic overcurrent protection, which resets after being overloaded.
No additional fuses are required for the 12V AUX terminals.
The RELAY AUX terminals are “dry” relay contacts with no voltage. Their most common function is to
serve as a switch for the start circuit of an automatic generator using the generator control functions.
However, they can be programmed for other Auxiliary functions as well. These terminals can conduct
up to 10 amps at up to 30 Vdc or 250 Vac.
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 do 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.
Each set of terminals has its own set of programmed criteria.
NOTE:
The menus for each set of terminals have identical options available, but can control
independent functions. For example, the RELAY AUX terminals can be used for generator control
while the 12V AUX terminals can simultaneously be used to control a vent fan in the battery box.
Note also that the control logic for the terminals is not always located in the same device. The
inverter’s Auxiliary Output functions are located within the inverter itself. Although they require the
system display (MATE3) for programming, they will function even if the MATE3 is removed. However,
the programming for AGS is located within the MATE3 and will not work if the MATE3 is removed.
Other devices may be able to control the inverter’s terminals. See the appropriate manuals for more
information.
For generator control, see page 31. For all other functions, see the
MATE3 Owner’s Manual
and the
Radian Series Inverter/Charger Operator’s Manual
.)
Figure 19 AUX Connections for Vent Fan (Example)
In this example, the 12V AUX terminals directly
drive a 12-volt vent fan. The + and – wires on the
fan are connected to the AUX terminals.
NOTE:
If another device is used, such as a larger
fan, it must not draw more than 0.7 amps.
Fan
