Reliability, Safety 2.4 Safety Our product normally becomes part of larger systems or installations. The following notes are intended to help integrating the product into its environment without dangers for humans or material/equipment. 2.4.1 Observe during planning and installation Ш 24V DC power supply: Generate as electrically safely separated low voltage. Suitable devices are, for example, split transformers constructed in compliance with European standard EN 60742 (corresponds to VDE 0551). Ш In case of power breakdowns or power fades: the program is to be structured in such a way as to create a defined state at restart that excludes dangerous states.
Ш Emergency switch-off installations must comply with EN 60204/IEC 204 (VDE 0113). They must be effective at any time. Ш Safety and precautions regulations for qualified applications have to be observed. Ш Please pay particular attention to the notes of warning which, at relevant places, will make you aware of possible sources of dangerous mistakes or faults. Ш Relevant standards and VDE regulations are to be observed in every case. Ш Control elements are to be installed in such a way as to exclude unintended operation. Ш Control cables are to be laid in such a way as to exclude interference (inductive or capacitive) which could influence controller operation or its functionality. 11