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FSW3524 00: Stacking
Dev Name
[00]
Dev Number
[01]
Stack Mode
[Master]
AC In
[SHORE1]
Battery
[Batt1]
Figure 19 Stacking Menu Screen
Select Stack Mode and press Enter.
7.
8. For Parallel Stacking: Select Slave and press Enter.
9. Press the Func button repeatedly until the System
Status screen appears.
NOTES:
The only situation in which the Slave may shut down the
Master inverter is during fault conditions such as high or low
battery voltage, overcurrent, or over-temperature conditions.
Both inverters will auto reset after a fault condition has been
cleared. The exception is that an overcurrent condition will
generate a shutdown for both inverters that will require a
manual restart of the system.
975-0697-01-01
[*Master] [Slave] [L2Master]
[*SHORE1] [SHORE2 to 5] [GEN1 to 5] [None]
Search Mode Operation in Parallel
Stacking
When two inverter/chargers are stacked for parallel operation,
search mode behavior on the Slave unit is modified and is
dependent on how much total load is on the system.
Disabling Search Mode on the Master Unit
In parallel stacking, search mode on the Master unit will not
function properly. When the Master sends out a load search
pulse, a small current also flows into the output of the Slave
unit since the two outputs are in parallel. This Master unit
falsely detects a load causing erratic search mode operation.
For this reason, it is highly recommended to disable search
mode on the Master unit in a parallel stacking system.
Setting Search Mode on the Slave Unit
The Slave unit will behave in one of two ways depending on
whether its search mode is enabled or disabled.
Search mode enabled This is the recommended mode for
parallel stacking and it helps minimize battery draw. The
Slave unit continuously monitors the output of the Master
unit. If the Master unit has more than 60% of the rated load
Stacking Features
49
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