Excavator hydraulic pump proportional solenoid valve 200-6210

The spool of the proportional solenoid valve is controlled by proportional electromagnets, so that the output pressure or flow is proportional to the input current. Therefore, the output pressure or flow can be continuously controlled by changing the input signal. Some valves also have the function of controlling the flow size and direction. According to the proportional valve can also be divided into: pressure proportional valve, flow proportional valve, reversing valve three categories.
The proportional valve is used to replace the original control part with a proportional electromagnet on the ordinary pressure valve, flow valve and direction valve, and to remotely control the pressure, flow or direction of the oil flow according to the input electrical signal continuously and proportionally. Proportional valves generally have pressure compensation performance, and the output pressure and flow rate can be unaffected by load changes.
The proportional valve can control the output size with PWM wave, and the output is continuous.
The command signal is amplified by the proportional amplifier, and the proportional output current to the proportional solenoid of the proportional valve, the proportional solenoid output force and the proportional movement of the valve core position, you can proportional control the flow of the liquid flow and change the direction of the liquid flow, so as to achieve the position or speed control of the actuator. In some applications requiring high position or speed accuracy, the closed-loop control system can also be formed by detecting the displacement or speed of the actuator.