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Part-turn actuators, Modular allrounders

FQM/FQMEx SIL

The FQM fail safe unit in SIL version is an innovative and safe actuation solution for opening or closing valves in case of emergencies during power failures. The device is suitable for safety-related applications up to SIL 3. 

The torque required in an emergency is provided via the energy mechanically stored in a constant force spring. The innovative constant force spring motor offers considerable advantages compared to conventional solutions:

  • Constant torque characteristics across the overall torque range.
  • The spring is not operated during standard operation. As a consequence, actuator sizing can be relatively small.
Torque range

150 Nm to 1200 Nm

Fail safe unit for open-close duty

Service conditions

  • Wide temperature range
  • Highest enclosure protection
  • High quality corrosion protection

Functional safety - SIL

  • Certified by exida-in compliance with IEC 61508 (SIL) and EN ISO 13849 (PL)
  • Safety functions according to IEC 61508: Safe OPENING/Safe CLOSING (ESD), Safe end position feedback
  • Safety functions for up to SIL 2 capable for HFT=0 (hardware fault tolerance) and SC=3,, thus up to SIL 3 capable
  • Safety functions according to EN ISO 13849 safe end position feedback up to PL c

Options

  • Explosion protection
  • Fire protection

Interfaces

  • Electrical connection via AUMA plug/socket connector
  • Cable entries in different versions
  • Valve attachments according to ISO standard

Specifications

Key information at a glance

Design features

Service conditions

Approvals