Fail safe electric actuator with emergency power off button and handwheel

Features

• 1/4 turn operation with mechanical limits
• Over torque protection by torque test function of smart full potted controller
• Integral design of Motor/control box/housing to make whole actuator compact
• Local button to cut off power when emergency issue happens for manual operation
• Hard high pressure die cast aluminum housing with weather proof IP67 and NEMA 4X
• Two auxiliary limit switches to confirm valve position
• Visual valve position indicator/flat or convex
• De-clutchable handwheel is safe, reliable, labor-saving and small
• Non ventilation heavy duty motor with overheat protection
• Self-locking all metal gear drive, no additional brake required
• Standard ISO5211 direct mounting
• Certified by CSA per UL standard/CE marked

Specification

Description

DCL can add standard handwheel to its electric actuators, both for common type or explosion proof type. To ensure the safety of manual handling, an emergency power off button is also available to avoid mistake operation. The power off button is on the back of actuator and very easy to reach. Sometimes, we can not confirm the actuator is powered or not, we just press the button. Commonly the handwheel is disconnect states with worm gear, when press handwheel in, it connects to worm gear and can drive the output drive and valve.

O-ring for power off button keeps whole actuator IP67 weather proof, protect against dust and water. 100% underwater sealing test during production to make sure every actuator can meet IP67 sealing grade.

Over torque protector is optional only if accurate output torque is needed. PTC electronic heating component is also used as thermostatically controlled anti-condensation heater that will protect actuator against damage from condensation.