1、 Characteristics

Electronic actuators can be used to adjust and control the opening and closing of valves and dampers in pipelines. Their main features are as follows:

(1)Integrated structural design, the position transmitter and servo amplifier can be directly installed inside the actuator as two independent components, directly accepting4-20mAControl signal, output4-20mAor1-5VDCThe valve position feedback signal has a self diagnostic function, making it very convenient to use and calibrate.

(2)Functional modular structure design, through the combination of different optional functions, achieves control from simple to complex, meeting different application requirements.

(3)Simple structure, compact size, light weight, easy to install and maintain, all mechanical parts are made ofCNCProcessing and production, exquisite craftsmanship.

(4)The transmission adopts small backlash sealed gears, which have the characteristics of high efficiency, low noise, long service life, stability and reliability, and no need for refueling.

(5)It has multiple operating speeds to meet the requirements of various control systems, ensuring fast response and stability of the system.

(6) Direct stroke electric actuatorThe connection with the valve adopts a flexible coil spring connection, which can avoid the influence of the valve stem and output shaft being different from each other on the valve. The valve closing force can be pre-set to ensure the reliable closing of the valve and prevent leakage.

(7) Angular stroke electric actuatorThere is torque switch protection to prevent damage to the valve stem due to excessive torque generated by the valve.

(8)The driving motor is a high-speed synchronous motor made of high-performance rare earth magnetic materials, which runs smoothly. It has the characteristics of small size, high torque, anti blocking, and high control accuracy.

(9)Segmented adjustment can be set, which means that two actuators are controlled by a dual time proportional signal output from one regulator（4-12mAcorrespond toPSL1Fully open and fully closed,12-20mAcorrespond toPSL2Fully open and fully closed.

(10)The valve position feedback component adopts a fully sealed high-precision multi turn potentiometer, which has the characteristics of small volume, high accuracy, small dead zone, and long service life.

(11)Adjustable stroke for easy connection with valves.

(12)All electrical components are of reliable quality and have a long service life.

(13)The wiring of electrical components is rigorous and completely isolated from transmission components, which improves the reliability of the operation of the actuator.

2、 Product Structure

The wiring of the electrical components of the actuator is rigorous and completely isolated from the transmission components, improving the reliability of the actuator operation. The transmission components adoptCNCThe processed small backlash sealed gear transmission has the characteristics of high efficiency, low noise, long service life, stability and reliability, and will not cause resonance of the actuator due to process environment fluctuations such as medium inlet force.

1.Direct travel actuator

The linear actuator is mainly composed of isolated electrical control parts and gear transmission parts. As an intermediate component connecting two isolated parts, the motor outputs torque according to control requirements, which is transmitted to the trapezoidal screw through a multipole spur gear. The screw converts torque into thrust through rod threads. This rod thread can self lock and transmit linear travel to the valve stem through an adapter with the valve. The actuator shaft is equipped with a stop pin to prevent rotation, and the radial locking device of the shaft can serve as a position indicator. The locking device is connected to a connecting rod that runs synchronously with the output shaft. The displacement of the output shaft is converted into an electrical signal through a circuit board connected to the connecting rod, which is provided to the servo amplifier as a comparison signal and valve position feedback output. At the same time, the stroke of the actuator can also be limited by two main limit switches on the switch board, and the limit position can be adjusted by two mechanical limit blocks.

2.Angular travel actuator

The angular travel actuator is mainly composed of an isolated electrical control part and a gear transmission part, with the motor serving as the intermediate component connecting the two isolated parts. The motor torque is transmitted to the planetary gears through the main gear, and the main gear drives the planetary gears to drive the hollow gears. Hollow gears have three fewer teeth than secondary gears, so they can be driven by planetary gears. When a planetary gear rotates once, the hollow gear rotates three teeth, and the outer part of the planetary gear always meshes with a worm gear, which does not separate during operation. This design allows the motor to be manually controlled through the handwheel in case of faults or unexpected increases in valve torque.

The actuator has two threaded stop mechanisms for limiting, as well as two limit switches to achieve electrical limiting. The stroke range of each turn can be controlled by the position of the limit switch. The valve opening is indicated by a protruding display, and the unique torque switch can be adjusted50%-100%High torque is applied to achieve torque protection to prevent valve stem damage caused by valve jamming.

3、 Product selection

The electronic integrated electric actuator is small in size, light in weight, strong in function, and can be equipped with a servo amplifier. It is easy to operate and can be widely used for opening and adjusting valves and dampers in pipelines.

(1)Direct stroke electric actuator

The long stroke of the linear electric actuator has reached100mmHigh thrust can be achieved25KNSuitable for valve switching and regulating control in linear motion.

PSLMain technical parameters of linear electric actuator:

4、 Wiring instructions