SICK WEU26-3

Operating Instructions Chapter 3
WSU/WEU263
8013338/YTA4/2016-03-24 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 13
Subject to change without notice
Product description
3.4 Application example
T
he WSU/WEU26@3 devices are used as access protection for hazardous areas on
machines or systems (Fig. 4). The devices are permanently mounted in the access area
with the necessary safety distance from the nearest hazardous point. If the light beam is
interrupted by an object, a switching command is triggered. The machine or plant
controller that evaluates this message must then bring the dangerous movement to a halt.
S
Fig.
4
:
Access guarding with
WSU/WEU26&3
Access guarding with
WSU/WEU26@3
Hazardous point
M
echanical protection
Direction of entry
into the hazardous
area