Conext XW+ 6848 NA Owner's Manual page 58

Configuration
Single units
Multiple units
When to set up
Search mode
3–10
When a single Conext XW+ 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.
To use search mode in multiple unit installations with paralleled Conext XW+
units, the master unit must have search mode disabled. Slave units must have
search mode enabled.
When search mode is disabled on the master unit and enabled on slave units,
only the master Conext XW+ operates, and the slave units start to support the
load only when the load exceeds approximately 60 per cent of the rated output
power of the master unit. In a three-unit system, the third slave unit starts to
support the load if the load on the master is above 60 per cent of its rated power
for about 3 to 5 seconds. When the load drops below 20 per cent of the master's
rated output power, the slave units stop producing AC output in reverse order,
which means that the last slave unit to start is the first to stop.
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 Conext XW+
comes on only when needed.
Certain types of loads can cause search mode to work improperly. These types
of loads are described in "Inverter Applications" on page 4–3. If these kinds of
loads are in the system, follow the suggestions given to resolve the problem.
If the problem loads cannot be resolved, there are two workaround solutions:
1. Disable search mode from the main Conext XW+ Setup menu, causing the
inverter to remain at full output voltage.
2. Use a search friendly companion load whose only purpose is to be switched
on to wake up the inverter to power the load that is unable to bring the
inverter out of search mode.
Notes:
• Search mode, by function, cannot work with clocks and timers or devices
that need power 24 hours a day. Examples of devices with timers include
video recorders, coffee makers with brew timers, refrigerators, and freezers
with defrost timers. Examples of devices that need power 24 hours a day
include telephone answering machines, alarm systems, motion detection
lights, and some thermostats.
• When the inverter is searching the output for loads, lights that have a
wattage lower than this setting may flash momentarily.
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