2.2.4 Use of deviating mirrors
The control of any dangerous area, with several but adjacent access sides, is possible using only one safety device
and well-positioned deviating mirrors.
The figure shows a possible solution to control two different access sides, using one mirror placed at 45° with
respect to the beams.
Fig 19 - Use of deviating mirrors
The operator must respect the following precautions when using the deviating mirrors:
The alignment of the emitter and the receiver can be a very critical operation when deviating mirrors are used.
Even very small displacements of the mirror is enough to lose alignment.
The use of DATALOGIC laser pointer accessory is recommended under these conditions.
The minimum safety distance (S) must be respected for each single section of the beams.
The effective operating range decreases by about 20% by using only one deviating mirror.
The following table shows estimated operating distances relating to the number of mirrors used.
Operating Distance (14mm)
Operating Distance (30mm)
The presence of dust or dirt on the reflecting surface of the mirror causes a drastic reduction in the range.
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