SQEx

Explosion-proof devices must be used in plants where potentially explosive atmospheres are likely to occur. These devices are designed so that they will not act as an ignition source. They neither generate ignition sparks, nor hot surface temperatures. Certification is performed in close collaboration with national and international certification bodies. For multi-turn actuators SAEx/SAREx 07.2 – SAEx/SAREx 16.2 and part-turn actuators SQEx/SQREx 05.2 – SQEx/SQREx 14.2, AUMATIC ACExC 01.2 actuator controls with integral local controls are available.

Explosion-proof devices must be used in plants where potentially explosive atmospheres are likely to occur. These devices are designed so that they will not act as an ignition source. They neither generate ignition sparks, nor hot surface temperatures. Certification is performed in close collaboration with national and international certification bodies. For multi-turn actuators SAEx/SAREx 07.2 – SAEx/SAREx 16.2 and part-turn actuators SQEx/SQREx 05.2 – SQEx/SQREx 14.2, AUMA MATIC AMExC 01.1 actuator controls with integral local controls are available.

AUMA offers sophisticated control for premium safety requirements with AC 01.2-SIL or ACExC 01.2-SIL actuators controls. SA .2 and SQ .2 actuators combined with these actuator controls can be deployed in safety-related system systems up to SIL 3. AC 01.2 actuator controls in SIL version are equipped with an additional SIL module designed for the execution of safety functions. In case of an emergency at the plant and when requesting a safety function, the standard logic of AC is bypassed and the safety function is performed via the safe SIL module. Consequently, the safety function always overrules standard operation. SA .2 and SQ .2 actuators equipped with these actuator controls have been certified by TÜV Nord. They are suitable for the following safety functions:

• Safe OPENING/CLOSING (ESD) up to SIL 2 (single-channel system) or SIL 3 (redundant system) according to IEC 61508 Ed. 2
• Safe STOP up to SIL 2 (single-channel system) according to IEC 61508 Ed. 2
• Safe end position feedback signal up to SIL 2 according to IEC 61508 Ed. 2 or up to PL c according to ISO 13849 (not integral part of the certificate. A separate declaration of incorporation is available.)