About the principle of electric actuator

Release time:

20 Mar,2024

The electric actuator uses AC220 single-phase alternating current as the power source, and receives DC4 ~ 20mA from DCS, PLC system and other operators. The standard signal is used to control the actuator to open and close the valve or automatically adjust. The electronic control module adopts a hybrid integrated circuit, contains complete protection functions, can be controlled on site or remotely, is designed into a box form, and is sealed with resin casting.

About the principle of electric actuator
About the principle of electric actuator

The electric actuator uses AC220 single-phase alternating current as the power source, and receives DC4 ~ 20mA from DCS, PLC system and other operators. The standard signal is used to control the actuator to open and close the valve or automatically adjust. The electronic control module adopts a hybrid integrated circuit, contains complete protection functions, can be controlled on site or remotely, is designed into a box form, and is sealed with resin casting.

The drive feedback adopts high-performance conductive plastic potentiometer, high precision, long life and other characteristics, and can be combined with various angular stroke adjustment mechanism into a high-performance, high-reliability electric control valve. Therefore, it is widely used in metallurgy, power generation, petrochemical, papermaking, light industry and environmental protection and other industrial sectors.

Main features of electric actuator

1 The actuator is designed with a servo system (no additional servo amplifier), and only needs to be connected to DC4 ~ 20mA (or DC1 ~ 5V) signal and AC220V single-phase power supply. Internal wiring terminals, wiring is extremely simple and convenient.

2 The key component of the actuator, the controller, adopts the advanced hybrid integrated circuit, sealed and cast with resin, with a box shape, small size and high reliability.

3 The feedback detection of the driving amount of the electric actuator adopts a high-performance conductive plastic potentiometer with a resolution of <0.4%.

4 With self-diagnosis function, when a fault occurs, the indicator light on the controller will immediately send out an indication signal.

5 The state selector switch can be used to set the off signal (the spool is fully open, fully closed or self-locking).

6 The state selector switch can be set (positive and reverse action).

7 The input signal can be set to (DC4 ~ 20mA or DC1 ~ 5V) with the state selection switch.

8 to adjust the zero point (start point) and stroke (end) is simple and easy.

9 when the sudden power failure, to ensure that the spool self-locking.

10 It adopts synchronous belt drive, which effectively reduces noise.

11 electric actuator protection function, rated load, can implement state self-locking, fault occurs, can immediately start the protection, and can run in reverse to cancel the protection.

Keyword:

Control Equipment

Fluid Control

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