Jun 18, 2018
Process Technology (18/06/2018)
Electrosensitive protective devices for safe machines — Part 2
… For AOPDs, the light beam is focused from the sender. The aperture angle of the lens is reduced as far as possible such that an operation free of false trips can be ensured even in the event of small alignment errors. The same applies to the aperture angle of the receiver (effective aperture angle according to IEC 61496-21).