Chapter 3 Operating Instructions
M4000 Adv., Adv. A/P, Area
14 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8010797/YT72/2016-02-19
Subject to change without notice
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 deflec-
t
or 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
(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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