Application guide safety relays - riese electronic - #19

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application guide safety relays from riese electronic page 19 2 Safety gates according to EN 1088 Movable covers are required, if the dangerous area has to be entered very often, in order to load, unload or fix the machine. The cover has to be designed in a way, that if it is opened, the machine or the dangerous actions have to stop. If this stop is not possible as quick as the cover can be opened, the cover has to be locked as long as the dangerous action is in effect. Requirements of a safety switch according to BG-GS-ET-15 : .. positive guided opening of the normally closed contacts .. form conclusiveness of the active part of the switch .. the switching loop can withstand a voltage peek of 2500 V .. galvanic separation of the switching parts .. non reversible with simple tools Safety switch categories Category 1 : Switches, where the switching element and the operation element form a unit by design and function. Category 2 : Switches, where the switching element and the operation element do not form a unit by design, but during opening and closing they will come together by the function.