In the case of a light switching through beam sensor

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Unformatted text preview: circuit protection of outputs – Protection against voltage peaks With through-beam sensors and retro-reflective sensors, switching functions are distinguished as follows: • Light switching method The output is switched through when the light beam is undisturbed by an object (Normally open output, N/O = Normally Open). In the case of a light switching through-beam sensor, the receiver output is switched through if no object is in the light beam. • Dark switching method The output is open (not switching) when the light beam is undisturbed by an object (Normally closed output, N/C = Normally Closed). In the case of a dark switching through-beam sensor, the receiver output is switched through if there is an object in the light beam. The switching function of optical diffuse sensors is as follows: • Light switching method The output closes, if an object to be detected enters the light beam. (Normally open output, N/O = Normally Open) • Dark switching method The output opens, if an object to be detected enters the light beam. (Normally closed output, N/C...
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This note was uploaded on 11/01/2012 for the course CHEMICAL 102 taught by Professor Jamesrodriguez during the Spring '12 term at Universidad Politécnica de Cartagena.

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