Intelligent switch is an integration of control unit and electric actuator. It can realize local and remote automatic operation. It is more convenient to use. It is widely used in industrial automation system and can be directly connected to PLC/DCS system.
Characteristic of the instrument: The control system and electric device are integrated into a whole called integral electric device. Its electrical part is mainly composed of integral module, button box, opening meter (or digital indicator), contactor and so on. Electrical components are installed on a reversible board to adjust the torque control mechanism, stroke control mechanism and opening indicator mechanism. There are three buttons on the button box, the middle one is the field/remote control conversion button, the left one is the field shut-off button, the right one is the field open button, the cover of the button box is the remote control, the remote switch contact control (24VDC has been supplied), and the open cover is the field operation.
Common intelligent electric actuators adopt variable frequency deceleration. The operating speed of electric actuators varies according to the position. Given a larger value with the current position, the electric actuator runs near the given value at a faster speed, and then reaches the given point at a slower speed. The intelligent switch type can control the valve without additional control box or control cabinet. Relatively speaking, users can use it more easily.