L90E R901082468 Loader solenoid valve 15066984 Excavator accessories L12 0E L150

The control principle of the proportional solenoid valve has three main aspects: first,

the fluctuation of the electrical signal affects the opening degree of the valve; The second

is to control the rotation of the valve through the electromagnetic force; The third is to

control the opening degree of the valve according to the rotation of the valve, and then

pass the feedback signal loop to the flow controller to achieve the control of the flow.

The working process of the proportional solenoid valve can be summarized as four steps.

First, the power supply is always stable, and then the proportional control signal is

obtained from the controller and transmitted to the proportional solenoid valve; Second,

the proportional control signal is converted into electromagnetic force excitation,

thereby controlling the rotation of the valve; Third, according to the rotation of the

valve to control the opening degree of the valve, and then feedback to the controller;

Fourth, according to the feedback signal to adjust the valve spring, so as to achieve

accurate control of the valve opening degree.