How Does a Linear Actuator Work?

Linear actuators play a vital role in automating systems across industries, transforming rotational motion into precise linear movement. 

What Is a Linear Actuator?

A linear actuator converts electric, hydraulic, or pneumatic energy into straight-line motion, making it essential for tasks like lifting, pushing, or pulling objects in various applications.

How does a Linear actuator work?

Linear Actuator Key Features and Protection Mechanisms:

1. Torque Protection
A sensor serve as overload protection for the entire valve travel, and you can setting a different torque volume between 40~120% of rated torque.

2. Limit Protection
Set this function is avilability, the electric actuator should stop automatically while the valve position reach the limit position.

3. Automatic Phase Rotation correction
Actuator monior the phases and run in the coretr dretien regard less of the sequence of power supply connection that is realized through a phase rotation correction Boolean logical calculation. Without this function it may damage the valve in unconsciously.

4. Instantaneous ReversalProtection
The motor control logic automatically add a time delay in switching the motor when the actuator is ordered to reverse direction instantaneously, this function can preventing unnecess arywear to the valve stems and gearboxes.

5. Electric Protection
The input and output signal channel of circuits are designed as photoelectric isolate mode.

6. Motor Thermal Protection
Two thermostats are embedded in the windings for provide thermal-protection by de-energised motor in the event of motor over the maximum temperature.

7. Phase Failure Protection
Actuator real time monitors all three phases of the power supply during operation to prevent lose phase action. (3-phase powersupply only)

8. Valve Jammed Protection
Electronic latching inhibits the actuato torque protection function around 5 seconds and allows the motor to generate 2 times rated torque to unseat the stuck valves while starting operation signal is enabled, if the actuator in the above-mentioned second time have no movement, control circuit will cut off the power supply of the motor to prevent the further valve damage or motor burm out.

Linear Actuator Technical Characteristics

Wide Voltage Support: Compatible with single-phase and three-phase voltages.
Absolute Encoder: Ensures precise, wear-free valve positioning with no battery support needed.
Bus Integration: Supports Profibus-DP, Modbus, FF, Hart, and DeviceNet for enhanced connectivity.
Double-Speed Control: Minimizes fluid surge during operation.
Temperature and Humidity Tolerance: Operates efficiently in temperatures from -30°C to +70°C, withstanding up to 90% relative humidity.
Security Features: Includes level-3 password protection and customizable relay feedback for better operational control.

Why are linear actuators important?

Intelligent linear electric actuator provide reliability, precision, and flexibility in industrial and domestic applications, enabling complex machinery to operate smoothly.

By converting rotational energy into linear motion, they enable precise positioning in applications such as robotics, manufacturing, and medical devices. Their adaptability to electricity, hydraulics, or pneumatics allows them to be flexibly used for a variety of tasks, from heavy industrial machinery to compact systems.