Using Search Mode - Xantrex Freedom SW Series Owner's Manual

Using Search Mode

Why use Search mode? Search mode allows the inverter
to selectively power only items that draw more than a certain
amount of power, which can result in power savings. The
Freedom SW has a no-load power draw of about 28 watts.
Enabling search mode reduces this power draw to less than 8
watts. Search mode operates differently in single-unit and
multi-unit installations.
Single units When a single Freedom SW has search mode
enabled, the inverter sends electrical search pulses through its
AC output. These search pulses look for connected AC loads.
The delay between search pulses is set using the Search
Delay setting. After a load larger than the Search Watts
setting is detected, the inverter starts producing AC output.
Double units When configured for 120/240-volt series
stacking, each inverter/charger operates independently in
search mode and attempts to detect loads connected to its
terminals only.
To use search mode in parallel stacking, the Master unit must
have Search Mode disabled. The Slave unit must have
Search Mode enabled.
97-0019-01-01
Configuring the Freedom SW using the SCP
IMPORTANT:
The Slave unit continuously monitors the output of the
Master unit. If the Master unit has more than 60% of the rated load (for
example, 1800 watts on Freedom SW 3012), the Slave unit will assist the
Master and the two will share the load equally. Should the load on the
Master drop below 20% of rated load (600 watts for Freedom SW 3012), the
Slave unit disengages and returns to a waiting state.
When to set up Search mode The search mode feature is
only valuable if the inverter can spend a fair amount of time
"sleeping" each day. Therefore, if search mode is to be used it
must be adjusted properly. The initial adjustment should be
made so that the inverter comes on only when needed.
Certain types of loads can cause search mode to work
unexpectedly. These types of loads are described in "Inverter
Applications" on page 86.
system, follow the suggestions given to eliminate the
problem.
If these kinds of loads are in the
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