Explosion-proof electric actuatorWhat's the difference between an electric actuator and an ordinary one?

Explosion-proof electric actuator: The shell is made of hard aluminium alloy, which is anodized and coated with polyester powder. It has strong corrosion resistance. The protection level is IP67, NEMA4 and 6, and IP68 is available for selection. Fully enclosed squirrel cage motor, small size, large torsion, small inertia force, insulation grade F, built-in thermal protection switch, can prevent damage to the motor.

　　In recent years, electric actuators have developed rapidly, and some manufacturers at home and abroad have introduced intelligent electric actuators with fieldbus communication protocol. The new intelligent electric actuator integrates servo amplifier and actuator by means of computer and fieldbus communication technology. It not only realizes the functions of bidirectional communication, PID regulation, on-line automatic calibration, self-calibration and self-diagnosis, but also adds travel protection, over-moment protection and motor overheating. Protection, power failure signal protection, output field valve position indication and fault alarm functions. It can perform field operation or remote operation, complete manual operation and manual/automatic undisturbed switching.

　　Intelligent electric actuator adopts novel structural components. The microprocessor system is used in the servo amplifier. All the control functions can be realized by editing. It also has a digital communication interface, so it has HART protocol or fieldbus communication function and becomes a node in the fieldbus control system. Some servo amplifiers also use frequency converter technology, which can control the servo motor more effectively. The reducer adopts a novel transmission structure with smooth operation, high transmission efficiency, no crawling and low friction. New technologies and new methods are used in position transmitters, some of which use Hall effect sensors to directly induce the longitudinal or rotational action of the valve stem to realize non-contact positioning detection; some use special potentiometers, which contain resistance sheets made of ball bearings and special conductive materials; some use non-connection of magnetoresistance effect. Touch rotary angle sensor.

　　Intelligent electric actuators usually have LCD and manual operation buttons, which are used to display various status information, input configuration data and manual operation.