Fail Safe Electric Actuators

Once the power is lost or removed the controlled.

Fail safe electric actuators.

Our cva cma products and waterproof iqt model through additional battery pack can all provide fail to position functionality. Do rotork electric actuators have fail safe functionality. 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. Biffi fail safe electric actuators model efs2000v4 instruction and operating manual 2 device description 2 1 general the efs2000v4 electric fail safe is an electric quarter turn spring return actuator which has the purpose to move the valve in a fail safe state fail open or fail close when the system is de energized.

When power is supplied the spring mechanism is compressed to store energy for movement. The design has the ability to independently adjust motor speed and fail safe shutdown time. Types of fail safe electric actuators. There are 2 basic ways of achieving 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. 1 stored electrical energy that can be used in place of the external power to power the motor. Or the actuator can be set to fail closed where the actuator moves the valve to the closed position commonly referred to as an emergency shut off valve esv. Our exmax product provides a quarter turn spring return failsafe solution.

The actuator is configurable to either fail close or fail open on loss of power supply. A non intrusive intelligent fail safe quarter turn actuator for on off and modulation control in fail safe applications. There are two types of fail safe electric actuators. Corrosion resistant housing and enclosure type 4 4x 6 ip65.

Torques up to 2640 in lbs. Failsafe electric actuators for all quarter turn applications spring return fq range actuators ensure automatic opening or closing even without any power supply. The robust and compact mechanical spring return design can be triggered to fail safe action either on loss of power or signal. With their new fqm fail safe unit auma offer innovative and safe actuator solutions for automatic operation of valves in case of emergencies making use of stored mechanical energy.

Battery backup fail safe electric actuators for emergency shutdown applications. Spring return electric actuators and battery back up bbu actuators. When energized the actuator operates the valve normally and at the same time compresses the spring which is held in the loaded position by a solenoid brake.