Inverter Functionality; Ac Input Connection; Description Of Ac Input Modes - OutBack Power FXR2012E Operator's Manual

Inverter Functionality

The FXR inverter can be used for many applications. Some of the inverter's operations occur
automatically. Others are conditional or must be enabled manually before they will operate.
Most of the inverter's individual operations and functions can be programmed using the system
display. This allows customization or fine tuning of the inverter's performance.
Before operating the inverter:
The operator needs to define the application and decide which functions will be needed. The FXR
inverter is programmed with many AC input modes. Each mode has certain advantages which make it
ideal for a particular application. Some modes contain functions unique to that mode.
The modes are described in detail following this section. To help decide which mode will be used, the
basic points of each mode are compared in Table 2 on page 21.
Apart from the input modes, FXR inverters possess a set of common functions or operations. These
operations are described in detail beginning on page 23. Most of these items operate the same
regardless of which input mode is selected. The exceptions are noted where appropriate.
Each distinct mode, function, or operation is accompanied by a symbol representing the inverter and
that operation:
TRANSFER
AC IN
The symbols may have other features depending on the operation.

AC Input Connection

The FXR inverter has one set of input connections. Only one AC source can be physically wired to it at
any time. However, two different AC sources can be used with an external transfer switch. It is
common for backup or grid-interactive systems to use the utility grid as the primary source, but switch
to a gas- or diesel-powered generator in emergencies. The inverter can be programmed with separate
input criteria for each source.
The inverter's two input selections can be programmed for separate input modes (see below). The
selection (Grid or Gen) can be chosen in the AC Input and Current Limit menu. (See the menu tables
beginning on page 72.)
NOTE: The input types are labeled for grid and generator due to common conventions, not because
of inverter requirements. Each selection can accept any AC source as long as it meets the
requirements of the FXR inverter and the selected input mode. If necessary, the Gen selection can
accept grid power. The opposite is also true.

Description of AC Input Modes

These modes control aspects of how the inverter interacts with AC input sources. Each mode is
intended to optimize the inverter for a particular application. The names of the modes are Generator,
Support, Grid Tied, UPS, Backup, Mini Grid, and GridZero. The modes are summarized and compared
in Table 2. See page 21.
900-0169-01-00 Rev B
These items represent the input from the AC
DC
source, the output to the AC loads, DC functions
(inverting, charging, etc.), and the transfer relay.
AC OUT
Arrows on each symbol represent power flow.
Operation
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