Manufacturer Part # : Evaluation-units-CMS
Manufacturer : EUCHNER
Description : Description Magnetically coded safety switches are interlocking devices that are designed to protect people and machines. Compared with electromechanical safety switches, they are used if: strict hygiene requirements are to be met (e.g. in the food industry) a precise door guide is not possible compact dimensions are required The EUCHNER safety system CMS is based on the magnetic principle. The tamper-proof, coded system was specifically developed to monitor moving machine components and movable safety guards. More information Functional description The Coded Magnetic Safety systems CMS comprise three components: Actuator Read head Evaluation unit Several permanent magnets are arranged in the actuator housing. The number of magnets, their position (polarity) in the housing and the magnetic field strength of the individual magnets characterize the actuator type. For this reason, they are also called coded actuators. Within a series, the individual actuator coding is identical. Using one actuator type on a machine or complete system allows for quick and easy replacement. Reed contacts are installed in the read head of the safety system CMS. The operating principle for the reed contacts (NC contacts or NO contacts), the number of reed contacts fitted and their physical arrangement determine the type of read head. The contacts blades on the reed contacts are closed under the influence of the magnetic field from the actuator. The actuators and read heads are matched in pairs and are available in 4 different housings. Depending on the application, the system operator can select a cube-shaped or cylindrical design. The read head only responds to a specific mating component, i.e. a specific actuator is allocated to each read head type. The same applies to the allocation of the read head to the evaluation unit. The evaluation unit is the system unit downstream from the read head. Using internal relays, it switches the safety circuit as a function of the position of the reed
