IO-Link Safety Device Stack – for Safety Sensors and Actuators

You develop safety sensors or actuators, so you know the dilemma: a dedicated safety variant for every fieldbus means separate inventory, separate version management and separate field service. So your portfolio stays with OSSD and 4-20 mA. That works, but your devices remain mute: no parameterisation via IODD, no device replacement without a technician, no diagnostic data for IoT and Industry 4.0 – while non-safe sensors have long been communicating over IO-Link.

The obvious ways out come at a price. Implementing a SIL3-capable safety communication layer yourself means shouldering protocol expertise, safety software processes to IEC 61508-3 and the assessment at the notified test body on your own. Months of development time go into infrastructure instead of your actual product – and you carry the entire certification risk yourself.

There is an easier way. IO-Link Safety (IEC 61139-2) puts a lean safety communication layer on top of standard IO-Link as a black channel: up to SIL3 / PLe, fieldbus-independent, one FS device for the global market – whether PROFIsafe, CIP Safety or FSoE runs above it. Safety and standard data share a single cable, and OSSDe operation remains available as a fallback.

With the TEConcept IO-Link Safety Device Stack, manufacturers of safety sensors and actuators integrate IO-Link Safety communication (IEC 61139-2, up to SIL3 / PLe) directly into their devices. The Safety Communication Layer operates as a black channel on standard IO-Link and is fieldbus-independent: one FS device for all FSCPs such as PROFIsafe, CIP Safety or FSoE. Test equipment and assessment support from a single source.