Understanding the Differences between Analog Output and Switch Output in Electrical Proportional Valves

    In electrical proportional valves, analog output and switch output are two different output methods, mainly differing in the type and characteristics of the output signal.

    Analog output typically refers to a continuous analog signal that changes continuously with the controlled parameter, allowing for precise continuous control. In electrical proportional valves, analog output is commonly used to output continuous flow or pressure signals, enabling precise flow or pressure control. For example, when controlling the acceleration and deceleration valve in a hydraulic system, analog output can achieve smooth flow transitions, avoiding system over-rush or delay.

    Switch output typically refers to a digital signal that has only two states: on or off. In electrical proportional valves, switch output is usually used to control the opening and closing status of valves or actuators, enabling the control of hydraulic system start/stop or direction functions through switch output. For example, when controlling the movement of hydraulic cylinders or motors, switch output can be used to control their forward and reverse rotation or stop, achieving hydraulic system control.

    In summary, the application scenarios and control methods of analog output and switch output in electrical proportional valves differ and the appropriate output method should be selected based on actual requirements.