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Safety Instrumented Systems (SIS) are not a new concept and it has long been the practice to fit protective systems to industrial process plant where there is a potential threat to life or the environment should something go wrong. What is new is that IEC61508 provides guidelines to achieving an adequate Safety Integrity Level (SIL) for systems, sub-systems and components. The new MTL4000-SR, MTL5000-SR and MTL4840 HART®-SR products come with certified reliability data, thus the safety system designer no longer has the uncertainty of having to use uncertified devices. Interfaces available in the new SR- Isolator Series cover Digital Input (DI), Digital Output (DO) and Analogue Input (AI) functions.
Further application information is provided in AN9025, ‘An introduction to Functional Safety and IEC61508’ explaining the principles of IEC61508 along with worked examples of solving practical issues associated with the new standard.
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BASEEFA certified to IEC61508
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System backplanes with bussed power - MTL4000 Series
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Certified HART® connectivity - MTL4840
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Straightforward ‘clip-on’ DIN rail mounting - MTL5000 Series
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