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Specifications
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Head of the business field Automation, Software and Information Technology (ASI) TÜV Industrie Service GmbH, Köln T

Specifications
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Content	Head of the business field Automation, Software and Information Technology (ASI) TÜV Industrie Service GmbH, Köln TÜV Rheinland Group Automation systems and components are responsible for safety-related tasks in many different applications (machines and conveyor systems, process industry, building technology etc.). This means that the health and safety of persons as well as protecting equipment and the environment depend on the correct functioning of the relevant systems and components. Today, the correct functioning of systems and components is handled under the term of “Functional Safety”. This is especially documented in Standard IEC 61508 “Functional safety of electrical, electronic and program- mable electronic safety-related sys- tems” that was ratified in the Spring of 2000. In the meantime, this Standard has also been published as EN 61508 and DIN EN 61508 / VDE 0803. This standard is considered as a basis standard independent of the application and addresses those parties involved in developing application-specific stan- dards, as well as the contents (describ- ing measures for the safety concept, fault-preventing and fault-controlling measures for hardware and software) – essentially to manufacturers of safe- ty-related systems and components. This has already been accepted by the Standards groups oriented to specific applications. The first examples include IEC 61511 for the process industry and EN 50156 for the electrical equipment of furnace control systems. In the area of safety of machines, IEC 62061 is expected for safety-related control sys- tems of machines. It goes without say- ing that in the area of machine safety, application-specific standards - such as e.g. EN 954 - also have to be taken into account. Work is underway for this Standard to integrate the perspec- tives of IEC 61508 in reference to e.g. quantitative parameters and quanti- ties. A VDMA, Specification sheet 24200-1 has been published for the area of building automation. This also takes into account the perspectives of IEC 61508. In the future, it can be expected that additional User Associations will use the existing Basis Standard for their work in order to standardize the re- quirements placed on safety-related systems and components. This espe- cially makes sense, because the prin- ciples involved with risk evaluation, risk reduction and the safety-related functions can be applied to the widest range of applications. It would then mean, that from the perspective of the application, only a few aspects would have to be evaluated - such as e.g. the specified response times of the safe condition for the particular process. This means that manufacturers will be able to develop systems and compo- nents which will be able to be used for safety tasks, with comparable degrees of risk, in various applications. To real- ize this, the following generally appli- cable data must be available for each particular component: 4Safety Integrated System Manual Foreword Heinz Gall
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