PRINCIPLE OF OPERATION
If the protected area is clear, the two outputs on the Receiver are active and enable
the machine to which they are connected to operate normally.
Each time that an object bigger than or equal in size to the resolution of the
system intercepts the optical path of one or more beams, the Receiver deactivates
its own outputs. This condition enables hazardous machine movements to be
stopped (by means of an adequate machine emergency stop circuit).
Resolution is the smallest sized object that, passing through the protected area,
interrupts at least one of the beams generated by the light curtain (Figure 1),
causing certain intervention of the device and consequent stopping of the
hazardous movement of the machine.
Figure 1 - Resolution
Resolution remains constant regardless of working conditions as it depends only on the geometric
characteristics of the mirrors and on the centre distance between two adjacent lenses.
is the effective height protected by the safety light
curtain. If the curtain is positioned horizontally, this value indicates the depth of the
protected area.
indicates how far the emitter and receiver can be separated and
function properly.
EOS4 is available with the following resolutions:
14mm (protected heights from 160mm to 1810mm): PROTECTION OF THE FINGERS.
20mm (protected heights from 160mm to 1810mm): PROTECTION OF THE FINGERS.
30mm (protected heights from 160mm to 1810mm): PROTECTION OF THE HANDS.
40mm (protected heights from 310mm to 1810mm): PROTECTION OF THE HANDS.
50mm and 90mm (protected heights from 310mm to 1810mm):
PROTECTION OF THE LIMBS.
The EOS4 is also available in a Multibeam version with a distance between the
mirrors of:
500mm (2 beams), 400mm (3 beams), 300mm (4 beams).
PROTECTION OF THE BODY.
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