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5. Retroreflective light curtains
6. Cascading
2, 3 and 4 beams light curtains can be manufactured with all emitters and receivers on one side, and passive elements
(mirrors) on the other side. The advantage of using a retroreflective light curtain is that only one side needs to be powered on.
Cascading is when two or more light curtains are connected to each other, resulting in one system that functions as a
single light curtain.
Advantages of cascading are: better monitoring of dangerous areas with presence detection beyond the vertical
detection zone and space and cost savings by using a single safety unit.
ACTIVE SIDE
PASSIVE SIDE
Fig. 4 Retroreflective Light Curtain
Fig. 5 Cascading
SELECTION GUIDE
