Outback FX-R Series Operator Manual

Operation
18 900-0167-01-01 Rev A
Multi-Phase Coordination
Several other inverter adjustments are located in the
Grid Interface Protection
menu. These
sensitive items can only be changed with installer-level access.
The FXR inverter’s stacking function includes the option called
Multi-Phase Coordination
.
The selectable menu item is
Coordinated AC Connect/Disconnect
. The default setting is
No
.

If selected to
No
, the inverters will connect independently to the AC source. If certain inverters do not
sense an acceptable source, only those inverters will disconnect and return to the inverting state (with
a
Phase Loss
warning). Other inverters will remain connected. See page 28 for more information.

If selected to
Yes
, the AC source is required to deliver appropriate input to all inverters in a stacked
system. If the master or subphase master inverters do not sense an acceptable AC source, the entire
system disconnects from the source. None of the inverters will reconnect until the source is
acceptable for the duration of the appropriate timer. See page 28 for more information.
When reconnecting:

If the inverter is in
Grid Tied
mode, the
Reconnect Delay
timer is used.

If the inverter is any other AC input mode, the
Connect Delay
timer is used.
See pages 25 and 28 for more information on input acceptance and the transfer function.
See the
Installation Manual
for more information on the stacking function and subphase master
inverters. See the tables beginning on page 66 for the default settings and ranges.
UPS
In
UPS
mode, the FXR parameters have been optimized to reduce the response time. If the
utility grid becomes unstable or is interrupted, the inverter can transfer to inverting with the
fastest possible response time. This allows the system to support sensitive AC loads with
minimal interruption.
BENEFITS
:

Constant power is provided to the loads with virtually no drop in voltage or current.
NOTES
:

Due to the need for the FXR inverter to react quickly to AC source fluctuations, it must remain fully
active at all times. The inverter requires a continuous consumption of 42 watts.

For this reason, the
Search
function does not operate in this mode. (See page 24.)
Backup
The
Backup
mode is intended for systems that have utility grid available as the primary AC
source. This source will pass through the FXR inverter’s transfer circuit and will power the
loads unless utility power is lost. If utility grid power is lost, then the inverter will supply energy
to the loads from the battery bank. When the utility power returns, it will be used to power the
loads again.
BENEFITS
:

This mode will continuously maintain the batteries in a fully-charged state. It does not have the
overhead consumption of the
UPS
mode.
Failure
Failure