Outback Power Systems GS4048A Operators Manual - Manual (Page 16)

Operation
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requirements of the Radian inverter and the selected input mode. If necessary, the Gen terminals can
accept grid power. The opposite is also true.
However, if using the
Gen Alert or AGS functions, the generator must use the Gen terminals. See
page 41 ( Gen Alert) and page 45 (AGS).
When multiple inverters are stacked together in parallel, the master inverter’s input mode is imposed
on all slaves. (See the stacking section on page 35.)
The slave settings are not changed; they retain
any mode that was previously programmed. However, the slave will ignore its programmed mode
and use that of the master. This also applies to any parameters in the mode menu (
Voltage Limit,
Connect Delay, and so on).
The following pages compare the various features of each input mode.
Generator
The Generator mode allows the use of a wide range of AC sources, including generators with a rough
or imperfect AC waveform. In other modes, a “noisy” or irregular waveform may not be accepted by
the inverter. (Self-excited induction generators may require this mode when used with the Radian.)
Generator allows these waveforms to be accepted. The charging algorithm of this mode is designed
to work well with AC generators regardless of power quality or regulation mechanism. The generator
must still comply with the inverter’s nominal input specifications. (See page 23.)
BENEFITS:
 The Radian inverter will charge the batteries from the generator even when the generator is undersized, of
low quality, or has other problems. See page 25 for recommended parameters for sizing a generator.
 In cases where utility grid power is unstable or unreliable, Generator mode may allow the Radian inverter to
accept the power.
 A programmable delay time is available which will allow a generator to stabilize before connection. In the
MATE3, this menu item is
Connect Delay. It is available in both the Grid AC Input Mode and Limits and
the Gen AC Input Mode and Limits menus, depending on which input is being programmed.
NOTES:
 Any AC fluctuations that are accepted by the inverter will be transferred to the output. The loads will be
exposed to these fluctuations. It may not be advisable to install sensitive loads under these conditions.
 The name of Generator mode does not mean that the Radian requires a generator input when using this
mode. The use of this mode does not require the use of the Gen input; either input can be used.
Conversely, the Radian is not required to be placed in this mode just because a generator is installed.
Support
The Support mode is intended for systems that use the utility grid or a generator. In some cases the
amount of current available from the source is limited due to size, wiring, or other reasons. If large
loads need to be run, the Radian inverter augments (supports) the AC source. The inverter uses
battery power and additional sources to ensure that the loads receive the power they demand.
In the MATE3 system display, the
Grid Input AC Limit dictates the maximum AC draw for the Grid
input. The Gen Input AC Limit sets the maximum draw for the Gen input. The Support function takes
effect if the AC demand on either input exceeds the AC Limit setting.