Programming, Figure 118 inverter stacking – Outback Power Systems MATE3 Owners Manual User Manual
Page 102

Programming
100
900-0117-01-00 Rev C
Figure 118 Inverter Stacking
Set Points:
 Stack Mode – Assigns the inverter to a specific priority and phase
(leg). This assignment must be made for every inverter that is 
connected to a HUB port. In a multiple-inverter system, one inverter 
must be assigned as master. The others are assigned to other phases 
or as slaves. 
~
Master or 1-2phase Master – The primary inverter for single-
unit systems, single-phase systems, or split-phase systems. In 
models where this selection reads Master, it is also used 
for three-phase systems. 
~
Slave – A secondary inverter in a stacked system. This specific 
selection is used for parallel-stacked Radian inverters. It is the 
only stacking option for these models. 
~
Classic Slave – A secondary inverter, partly independent of the 
master. This slave is L2 (phase 2), with output 180° out of phase 
from the master. 
~
OB Slave L1 – A secondary inverter for single-phase (parallel) or 
split-phase multiple-inverter systems. An L1 slave is in the same 
phase as the master. 
~
OB Slave L2 – A secondary inverter for split-phase multiple-
inverter systems. This slave is L2 (phase 2), which is 180° out of 
phase from the master. 
~
3p Master or 3phase Master – The primary inverter for three-
phase systems that include the selection 1-2ph Master as shown 
above. The 
3p Master is Phase A.
~
3phase Classic B (C ), or 3p OB Slave A (B /C )– A secondary 
inverter for three-phase systems. Its output is 120° out of phase 
with other phases. Used in newer models where the phases are 
manually assigned. 
~
3phase Slave – A secondary inverter for three-phase systems. Its 
output is 120° out of phase with other phases. Used in older 
models where the phases are assigned based on the inverter’s 
position in the HUB.
 Master Power Save Level – Sets the inverter priority so that unused
slaves go into Silent mode. This setting is only used with the master 
(the unit on Port 1). It is visible on other ports, but should not be used 
on ports other than Port 1. 
 Slave Power Save Level – Sets the inverter priority so that unused
slaves go into Silent mode. This setting is only used with slave units 
(units on ports other than Port 1). It is visible for the master, but 
should not be used on Port 1. 
