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Electric actuators with fail safe unit

Electric actuators with fail safe unit
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Electric actuators with fail safe unit - 1

ELECTRIC ACTUATORS WITH FAIL SAFE UNIT For automatic opening or closing of a valve in the event of an emergency

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In recent years, safety requirements in process plants have become increasingly demanding. Even in case of emergency, the system must be safe for persons and the environment. Actuators play a crucial role here, since it is their task to open or close a valve in case of emergency and to ensure that the plant remains in safe condition. With the FQM fail safe unit, AUMA offers innovative and safe actuator solutions for automatic operation of valves in case of emergencies making use of stored mechanical energy. The FQM fail safe unit meets the requirements of safety-related applications up to...

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EASY INTEGRATION VERSATILE IMPLEMENTATION Actuators with FQM fail safe unit are integrated into systems in the same way as standard AUMA actuators. The fail safe unit seamlessly adapts to the modular AUMA product design. It is combined with AUMA SQ part-turn actuators. AUMA actuators with FQM fail safe unit are particularly suited to automate butterfly valves as well as ball and plug valves at a swing angle of 90°. They are the perfect choice if part-turn actuators require safe opening or closing in case of emergencies. Integration into the DCS is made as for the standard devices by means...

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FQM fail safe unit AUMA part-turn actuators with fail safe unit ensure that the valve is operated to a safe position in the event of power failure or in case an emergency signal is issued. Selection can be made whether the valve is to be operated into position OPEN or CLOSED. Standard operation All AUMA actuator functions are available as usual in standard operation. The torque is transmitted directly from the actuator through the fail safe unit to the valve. Fail safe operation The fail safe operation is completely independent of the power supply and is exclusively supplied on a mechanical...

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Electric part-turn actuator The FQM fail safe unit is used in combination with AUMA SQ part-turn actuators. The electric actuator can thus be individually and perfectly adjusted to the application requirements: The combinations with the following versions are possible: > SQ part-turn actuators for open-close duty > SQR part-turn actuators for modulating duty > SQEx and SQREx part-turn actuators for potentially explosive atmospheres AC integral actuators controls AC integral actuator controls assume communication control between DCS and actuator. Actuator controls are available with various...

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Advantages of the AUMA scheme The main drawbacks of conventional solutions using simple return springs are that the spring transmits the highest torque at the start of the travel. Towards the end of the travel, the applied torque is reduced when it is needed most to ensure safe valve seating. Hence, the springs have to be oversized to ensure that the required torque is still supplied towards the end of the travel. With the constant force spring with patent pending by AUMA, the wrapped constant force spring drum supplies a virtually constant torque across full travel. Consequently, constant...

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AUMA actuators with FQM fail safe unit are designed to highest reliability and long product life and fulfil their automation tasks in most severe and harsh environments. ENCLOSURE PROTECTION IP68 Like the actuators, the FQM fail safe unit is available with increased enclosure protection IP68 in compliance with IEC 60529. The permissible immersion height of 8 m head of water is specified for a max. duration of 96 hours. AMBIENT CONDITIONS The standard version of the FQM fail safe unit is suitable for temperatures of -30 °C to +70 °C. Further temperature ranges are available on...

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Solutions for a world in motion AUMA Riester GmbH & Co. KG Aumastr. 1 79379 Muellheim Germany Tel +49 7631 809-0 Fax +49 7631 809-1250 info@auma.com AUMA subsidiaries and representatives are implanted in more than 70 countries. For detailed contact information, please refer to our website. www.auma.com Subject to changes without notice. The product features and technical data provided do not express or imply any warranty. Y006.906/003/en/1.18

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