Ac Frequency; Search - Outback Power Systems FXR2012E Operator's Manual

Operation

Output Voltage: The AC output voltage can be adjusted. Along with small changes, this allows the inverter
to be used for different nominal voltages such as 220 Vac and 240 Vac.
IMPORTANT:
The output voltage can adjusted to a different nominal value for a particular region.
Making this change will not affect the default input voltage range accepted by the
inverter from an AC source. The input range must be adjusted manually. These
changes should be made at the same time. (See AC Source Acceptance on page 30.)

The inverter is also controlled by a high battery cut-out limit. If the DC voltage rises above this limit, the
inverter immediately stops functioning and gives a High Battery V error. The shutdown protects the
inverter from damage due to excessive DC voltage.

The high battery cut-out voltages for each model are shown in Table 19 on page 73. This voltage is not
a changeable set point.

If the voltage drops below this point, the inverter automatically recovers.

This is one of the errors on page 62. It appears as an event on the MATE3 system display.
The low battery and high battery functions are summarized in Table 19 on page 73.

AC Frequency

CAUTION: Equipment Damage
Setting the inverter's output frequency to deliver 50 Hz to 60-Hz loads, or setting it to
deliver 60 Hz to 50-Hz loads, could damage sensitive devices. Make certain the
inverter's output frequency matches the installation.
The inverter's output can operate at a frequency of either 50 or 60 Hertz. This output frequency (and
the AC acceptance frequency) can be changed with the Operating Frequency menu item. This
requires high-level access. Due to the possibility of damage, access to this setting was restricted by
placing it in the Grid Interface Protection menu.
The installer password must be changed from the default in order to get access to this menu. Once
this password has been changed, the Grid Interface Protection menu can only be accessed by using
the installer password. This password can be changed in the system display.
See page 21 for more information on this selection in Grid Interface Protection. See the menu tables,
which begin on page 76, for the location of the Operating Frequency menu item.

Search

An automated search circuit is available to minimize the power draw when no loads are present.
When enabled, the inverter does not always deliver full output. The output is reduced to brief pulses
with a delay between them. These pulses are sent down the output lines to see if a resistance is
present. Basically, the pulses "search" for a load. If a load is detected on the output, the inverter's
output increases to full voltage so that it can power the load. When the load is turned off, the inverter
"goes to sleep" and begins searching again.
Search mode sensitivity is adjusted with the Sensitivity menu item. See the menu tables, which
begin on page 76, for the location of this item. The sensitivity is adjusted in small increments which
are measured in fractions of one ampere.
28
Hz
900-0169-01-00 Rev A