Operating Instructions Chapter 3
M4000 Adv., Adv. A/P, Area
8010797/PA53/27-06-05 © SICK AG • Industrial Safety Systems • Germany • All rights reserved
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Product description
3.2 Operating principle of the device
3.2.1 The principle of the multiple light beam safety device
The M4000 multiple light beam safety device secures the access to a hazardous area and
signals the entry of objects as soon as a light beam is interrupted. The machine or plant
controller that evaluates this message must then bring the dangerous movement to a halt.
You can secure two sides of a hazardous area by using a deflector mirror, with two
deflector mirrors you can secure three sides (see chapter 3.3.2 “Access protection on
several sides with the aid of deflector mirrors” on page 17ff).
3.2.2 Device components
Fig. 1: Device components of
the M4000 Advanced
Fig. 2: Device components of
the M4000 Advanced A/P
Beam diameter
(23 mm)
Dimension of the light path between sender
and receiver
Dimension of the light path between
M4000 Advanced A/P and M4000 Passive
(deflector unit)
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