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safety instrumented system (SIS)

A Safety Instrumented System (SIS) is a safety system that contains at least one component that performs the function electrically, electronically or programmably electronically, E/E/PE

, and one or more safety functions. SIS systems usually consist of three functional areas: the sensors

such as the pressure transducers, the logical unit, for example aProgrammable Logic Controller (PLC) with the control and monitoring devices and the actuators

to be controlled such as the valves. The safety functions performed by SIS systems, the Safety Instrumented Functions (SIF), reduce the risks that occur below the acceptance criteria.

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Englisch: safety instrumented system - SIS
Updated at: 27.09.2020
#Words: 82
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Translations: DE