Outback Power Systems GS8048 Operator Manual - Manual (Page 32)

Operation
30 900-0020-01-00 Rev B
Auxiliary Terminals
The Radian inverter has two sets of terminals which can respond to different criteria and control many
functions. The 12V AUX terminals provide a 12 Vdc output that can deliver up to 0.7 Adc to control
external loads. The RELAY AUX terminals are “dry” relay contacts with no voltage. Each set of
terminals has its own set of programmed criteria. Each has identical options available. (When the
options described below refer generically to the “AUX output”, it can mean either set of terminals.)
Each AUX output has three states available: continuous
Off, continuous On, and Auto, which allows
that output to be activated using the automatic auxiliary functions. (All functions on both sets of
terminals are defaulted to
Off.) These functions are based in the Radian inverter and accessed using
the MATE3. The MATE3 and other devices also have programming, such as AGS, that can control the
AUX outputs. To avoid conflicts, the output should be turned
Off when the AGS function is active.
(See page 33.)
For the Radian automatic functions, typical applications include signaling a generator to start, sending
a fault alarm signal, or running a small fan to ventilate the batteries. See the Radian Series
Inverter/Charger Installation Manual for more information on hooking up each set of terminals. See the
MATE3 Owner’s Manual for instructions on programming each function.
The AUX terminals have a series of set points which are used by various functions. Both sets of
terminals have the same options available, but they are programmed independently. Not all set
points are used by all functions. Each AUX mode description below will detail the set points that are
used for that mode.
∼ Low DC voltage settings
∼ High DC voltage settings
∼ On delay settings, in increments of 0.1 minutes
∼ Off delay settings, in increments of 0.1 minutes
None of these settings are compensated for temperature. The compensation function is only used for
inverter battery charging.
There are nine functions, each geared toward a different application. The first item on this list may not
be the default function displayed in either menu.
 Load Shed can perform load management. It is intended to turn off designated loads during low battery
periods to conserve remaining battery power.
∼ When battery voltage rises above a settable high voltage level, the AUX output is activated after a
settable delay. The AUX output is used to energize a larger external relay (normally open) which is
connected to non-vital loads. The AUX output will be deactivated once the battery voltage falls below a
low voltage setting for a settable delay period.
∼ Load Shed will also turn off when the inverter enters a high-temperature condition or when the AC
output voltage drops below a specific AC voltage for more than 3 seconds. This voltage limit is 30 volts
below the setting of the inverter’s output voltage. For the Radian’s default output voltage of 240 Vac,
the limit is 210 Vac. (See Table 12 beginning on page 47.) The limit is not otherwise settable.
∼ Load Shed will also turn off if the input current exceeds the Input AC Limit setting while the inverter is
using an AC source.
∼ Settable parameters include:
• Low and high DC voltage
• On and off delay