process of the compressor is performed by the controller automatically.
When the screw compressor runs, the controller performs PID close
loop control of the output frequency of the inverter based on the
feedback of the setting pressure and output pressure so as to finely
stabilize the output pressure of the screw compressor.
If the screw compressor is configured with an intake valve, the
controller will perform loading operation through the solenoid valve after
the motor has started up for some time, and shut down the solenoid
valve before stopping.
5.3 Operate Screw Compressor in Power-line Drive Mode
When screw compressor is in stop status and the controller displays the
default screen, press
I
on the right side of the panel. The screw
compressor starts up immediately.
In running status, press
O
on the right side of the panel. The screw
compressor immediately shuts down the intake valve and is ready to
stop. After some delay, it stops.
The control process of the compressor is performed by the controller
automatically.
When the screw compressor runs, the controller checks the output
pressure. If the output pressure is lower than the preset loading
pressure, the controller opens the intake valve to perform loading
operation. If the output pressure is higher than the preset loading
pressure, the controller shuts down the intake valve to perform
unloading operation so that the output pressure of the screw
compressor is between the loading pressure and unloading pressure.
5.4 Switch the Drive Mode
For the screw compressor that uses the H0U-88B1G controller, both its
main motor and fan can work in the MDI drive mode or power-line drive
mode. For the screw compressor that is designed to support the
inverter/power-line incompatible drive mode, if you need to switch the
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