Use Of Corner Mirrors - IFM OY Series Original Operating Instructions

6.8 Use of corner mirrors

To protect and monitor hazardous areas with access from several sides one or
several mirrors can be used (available as accessory). By using mirrors the light
beam emitted by the transmitter can be sent via several access sides.
► To obtain a reflection angle of 90° the mirrors are to be oriented in an angle of
inclination of 45°.
The following image shows an application where U-shaped access protection is
implemented using two mirrors.
receiver (R)
A = hazardous area
M = corner mirror
► Install the mirrors so that the minimum safety distance (S) is adhered to at each
side of the hazardous area.
► During installation make sure that the reflecting area is plane and that no
vibrations affect the safety device.
• The range is the sum of the length of all sides (D1 + D2 + D3) of the access to
the protected area. The maximum range of the photoelectric safety sensors is
reduced by 15% for each mirror.
• Do not use more than three mirrors.
S
M
A
S
D2
S = min. safety distance
Dx = side length
transmitter (T)
S
M
UK
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