Power component
① Motor : Usually an AC servo motor or a variable frequency motor is adopted, which is responsible for providing rotational power. It can be classified into AC (220V/380V) or DC (24V/48V) drive according to the power supply type.
② Reduction mechanism : It converts the high-speed and low-torque output of the motor into low-speed and high-torque output through worm gear or planetary gear system. For instance, the first-stage worm drives the helical gear, which then drives the second-stage worm through the clutch, ultimately outputting an angular displacement of 0-90°.
2. Youdaoplaceholder0 control unit
① Controller (such as PM-2 control board) : receives 4-20mA or switch signal, compares it with the position feedback signal, and then regulates the motor action to achieve closed-loop control.
② Position sensor : including limit switches, encoders, etc., it is used to monitor the position of the output shaft in real time and feed back to the controller to ensure accuracy.
3. Mechanical transmission and auxiliary components
Youdaoplaceholder0 ① Drive shaft and output component : Directly connected to valves (such as butterfly valves, ball valves) to transmit torque.
Youdaoplaceholder0 ② Torque protection device : Overload protection is achieved through compression springs and torque switches, for example, power-off is triggered by the deflection of the inner planetary gear.
③ Handwheel : Supports manual operation and is used when power is off or during debugging.
4. Special design (for some models)
① Modular electronic cabin : The power board and control board of the variable frequency actuator can be quickly replaced.
Youdaoplaceholder0 ② Reducer type : It is divided into GS direct connection type (for butterfly valves/ball valves) and GF base crank type (for dampers), which are suitable for different load requirements.