Control Signal Connection (Optional); Commissioning - SolarEdge 2.2KW User Manual

Control Signal Connection (Optional)

This control signal ports are to detect water level to prevent water pump from dry running and water tank from
overflow/underflow.
Water level detector:
It's to prevent the water pump dry running by connecting to water level probe. The length of connecting wire
should not longer than 50m. If the water level is normal in the well, please keep the water level detector in
normal closed status. If the water level is low in the well, the water level detector will be open status. If this
port is not connected to water level probe, be sure to connect COM1 and DI3 together. It's default setting from
factory.
Remote float switch:
It's to prevent water tank overflow or underflow by sensing a remote float switch in water tank. When water
tank is full, it will receive "full-water" signal (open status on DI1 and closed status on DI2 & COM2) from float
switch and stop the inverter. When water tank is in low level, it will receive signal (closed status on DI1 &
COM2 and open status on DI2) from float switch and start up the inverter. This action is only available when
the auto turn-on function is enabled. If the water level is normal, DI1 and COM2 are normally in open status.

COMMISSIONING

Step 1: Check the following requirements before commissioning:
Ensure all wires are firmly and correctly connected

Use a megger to check insulation of motor and wires

Check if the open circuit DC voltage of PV module meets requirement

Step 2: Switch on DC breaker and provide power to the inverter. Then, LCD screen will show 0.00. Please set up
the parameters of the inverter such as rated power, rated frequency, rated current and rated voltage. For the
detailed setting, please check "Parameter setting" section in Operation chapter.
Step 3: Press "RUN" button to activate the inverter. If the output frequency or water yield is low, it may be
wrong for output wire connection. Please exchange any two wires connected to the motor. Please be sure the
output frequency and water yield are normal. It means the wire connection is correct and complete.
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