They can be set to fail open where the valve automatically reverts to the open position when power to the actuator is lost.
Fail safe electric linear actuator.
Fail safe actuators possess a mechanism that stores energy to drive the actuator to a predetermined safe position when power loss is detected.
And numerous features including manual overrides auxiliary switches 4 20ma modulating control several voltage options including 1 phase 24 120v 220v 12 and 24vdc 3 phase 220v 380v and 440v view voltage chart.
True mechanical fail safe 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.
A non intrusive intelligent fail safe linear actuator for on off and modulation control in fail safe applications.
Avc is the industry leader when it comes to fail safe electric actuators for emergency shutdown esd and other fail safe applications.
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.
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.
Constant torque curve with torques from 150 nm to 1 200 nm the spring is not operated during standard operation.
The clear advantage of a mechanical fail safe system in electric actuators is this elimination of the actuator s electrical system and the fail safe system is 100 mechanical and specifiers feel more secure with this than trusting batteries or electronic components which can fail.
When power is supplied the spring mechanism is compressed to store energy for movement.
These types of actuators are used in situations that require valves to automatically and immediately enter a safe position upon loss of power.
Our cva cma products and waterproof iqt model through additional battery pack can all provide fail to position functionality.
Once the power is lost or removed the controlled.
Fail safe electric actuators electrical power supply with emergency shutdown at loss of power or signal.
The design has the ability to independently adjust motor speed and fail safe shutdown time.
The robust and compact mechanical spring return design can be triggered to fail safe action either on loss of power or signal.
Fail safe actuators typically have two settings.
Do rotork electric actuators have fail safe functionality.
