Fail Safe Spring Return Electric Actuator

Spring return electric actuators are used in critical processes to return quarter turn valves to their safe position even with the absence of power.

Fail safe spring return electric actuator.

The electric spring return actuator uses an electric motor to drive a series of gears to rotate a drive shaft counter clockwise or clockwise depending on the desired fail safe position. Available in 300 600 1200 and 1800 in lb units in both on off and modulating. There are two types of fail safe electric actuators. The robust and compact mechanical spring return design can be triggered to fail safe action either on loss of power or signal.

The design has the ability to independently adjust motor speed and fail safe shutdown time. When power is supplied the spring mechanism is compressed to store energy for movement. Our cva cma products and waterproof iqt model through additional battery pack can all provide fail to position functionality. Fail safe spring return electric actuators more simply known as spring return electric actuators are used on linear and rotary valves in a range of applications across nearly all industrial process systems.

Device is capable of absolute position detection and configurable speed options. As the drive shaft rotates a series of springs are compressed or in some styles a spiral spring is tensioned storing energy in the springs. With no dependency on super capacitor or battery backup this state of the art design is widely. Types of fail safe electric actuators.

The actuator can be controlled by external controller to open close and stop at any position between 0 and 90 degree and will fail clockwise to the end position on loss of power. Once the power is lost or removed the controlled. Spring return actuators rely on mechanical energy stored by a spring to. Sun yeh s series spring return electric valve actuators and tunnel damper valve actuator utilizes spring driven pinion and rack mechanism to provide torque ranges from 50n m to 260n m mechanical fail safe quarter turn electric actuators.

Explosion proof class i division 1 groups c d t4 design weatherproof type 4 4x. A non intrusive intelligent fail safe quarter turn actuator for on off and modulation control in fail safe applications. Our exmax product provides a quarter turn spring return failsafe solution. Rts fail safe mechanical spring return electric actuator.

Do rotork electric actuators have fail safe functionality. Rts fail safe electric actuators with true mechanical spring return for fail safe positioning are designed and field proven for reliable shutdowns on loss of power or signal. Smart non intrusive electric fail safe quarter turn actuator with mechanical spring return ensures reliable shut down on loss of power or input command. Although they serve the same purpose they mainly differ in their operating principle.