In compliance with today’s state-of-the-art, installations representing a considerable risk for humans and the environment must be put and maintained in a safe state at all times in anticipation of failure. These systems are designed according to the internationally applicable standards relating to function safety in process industry, IEC 61508 or IEC 61511.


AUMA offers special devices for deployment in safety systems according to IEC 61508 / IEC 61511.


The highest functional safety level is ensured by the combinations of AC .2 SIL with multi-turn actuators of the SA .2 range or part-turn actuators of the SQ .2 range, certified by TÜV according to IEC 61508 (ed.2). These combinations can be used up to SIL 2 and in redundant version (e.g. 1oo2) even up to SIL 3. The comply with the latest and most demanding issue of IEC 61508 and offer superior flexibility when adapting the safety function within the respective safety instrumented system (SIS).


AUMA offers proven products for safe end position feedback, for NORM actuators without actuator controls as well as for selected gearboxes. FMEDAs were created for these products and safety instrumented figures calculated for the probability of failure.


The calculations are verified and confirmed in respective reports by exida – one of the worldwide leading testing authorities for functional safety. Safety figure calculated products can be implemented depending on the configuration in applications with SIL 1 or SIL 2 requirements.