Outback FX-R Series Installation Manual

Installation
32 900-0166-01-01 Rev A
Each inverter is assigned to a particular phase when assigned a port on the HUB10.3
communications manager. Port assignments will vary with the system. The master must be
plugged into port 1. In parallel stacking, any slave inverter can use any other port, beginning with
port 2. In series or three-phase stacking, the port assignments are very specific. See the HUB10.3
literature for more information. Regardless, it is important to keep track of units and ports for
programming purposes.
Programming uses the system display to assign a status and stacking value to the inverter on each
port. As long as the master is plugged into port 1, these assignments can be changed as needed.
IMPORTANT:
 The master inverter must always be connected to port 1 on the
communications manager. Connecting it elsewhere, or connecting a
slave to port 1, will result in backfeed or output voltage errors which will
shut the system down immediately.
 All stacked FXR inverters must have the same firmware revision. If
inverters are stacked with different firmware revisions, any unit with a
revision different from the master will not function. The system display
will display the following message:
An inverter firmware mismatch has been detected. Inverters X, Y,
Z
3
are disabled. Visit www.outbackpower.com for current inverter
firmware.
 FXR-class inverters cannot be stacked with FX-class inverters. If more
than one model class or series is stacked, any inverter different from the
master will not invert or connect to an AC source. The system display
will register an Event in the log. It will display the following message:
A model mismatch has been detected. Inverters are incompatible.
Inverters X, Y, Z
3
are disabled. Match all models before proceeding.
 Installing multiple inverters without stacking them (or stacking them
incorrectly) will result in similar errors and shutdown.
 Although stacking allows greater capacity, the loads, wiring, and
overcurrent devices must still be sized appropriately. Overloading may
cause circuit breakers to open or the inverters to shut down.
 An AC source should provide input to all inverters on all phases.
3
The port designations for the mismatched inverters are listed here.