The DREHMO Fail Safe system has been developed for emergency cases in which a valve/ damper has to be moved quickly into the fail safe position (position “OPEN” or position “CLOSED). While the valve/ damper in normal cases is moved by our electric DREHMO actuator it will be driven in emergency cases by a loaded coil spring which makes the emergency operation very fast and independent from electrical power supply. The extremely short closing times of below 1 sec can be adjusted if requested, by a hydraulic brake. Technical data Type Part Turn (Thrust on request) Fail-Safe Position OPEN or CLOSE Mode of operation FAIL-SAFE or TRIPPING Closing time < 1 sec … with hydraulic brake < 10 sec Voltage 24V DC or 230 V AC Weight < 22Kg Option: ATEX Ex II 2G mb IIC T3 Fail-Safe System Torque* 20 50 100 140 180 210 Closing time <1 sec <1 sec <1 sec <1 sec <1 sec <1 sec * higher torques on request DREHMO GmbH Zum Eichstruck 10 57482 Wenden Germany www.drehmo.com