DIN EN 61508-2:2011-02

DIN EN 61508-2 (VDE 0803-2): a) is intended to be used only after a thorough understanding of IEC 61508-1, which provides the overall framework for the achievement of functional safety; b) applies to any safety-related system, as defined by IEC 61508-1, that contains at least one electrical, electronic or programmable electronic element; c) applies to elements within an E/E/PE safety-related system (including sensors, actuators and the operator interface); d) specifies how to refine the E/E/PE system safety requirements specification, developed in accordance with IEC 61508-1, into the E/E/PE system design requirements specification, comprising the E/E/PE system safety function description and the E/E/PE system safety integrity description; e) specifies requirements for activities that are to be applied during the design and manufacture of the E/E/PE safety-related systems (meaning, specifies the E/E/PE system safety lifecycle model), including ASICs, but with the exception of software, which is dealt with by IEC 61508-3. These requirements include the application of techniques and measures that are graded against the safety integrity level, for the avoidance of, and control, of, faults and failures; f) specifies the information necessary for carrying out the installation, commissioning and final safety validation of the E/E/PE safety-related systems; g) does not apply to the operation and maintenance phase of the E/E/PE safety-related systems - this is dealt with in IEC 61508-1 - however, IEC 61508-2 does provide requirements for the preparation of information and procedures needed by the user for the operation and maintenance of the E/E/PE safety-related systems; h) specifies requirements to be met by the organisation carrying out any modification of the E/E/PE safety-related systems. The responsible Committee is GK 914 "Funktionale Sicherheit elektrischer, elektronischer und programmierbarer elektronischer Systeme (E, E; PES) zum Schutz von Personen und Umwelt" ("Functional safety of electrical, electronic and programmable electronic systems (E, E, PES) for protection of persons and the environment") of the DKE (German Commission for Electrical, Electronic and Informational Technologies) at DIN and VDE.