Chapter 6 Operating Instructions
WSU/WEU263
26 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8013338/YTA4/2016-03-24
Subject to change without notice
Commissioning
6 Commissioning
C
ommissioning requires a thorough check by qualified safety personnel!
Before you operate a system protected by the WSU/WEU26@3 devices for the first time,
make sure that the system is first checked and released by qualified safety personnel.
Please read the notes in chapter 2 “On safety”.
The device is switched on by applying the supply voltage to the sender and receiver unit.
After max. 10 s the WSU/WEU26@3 devices are ready for operation.
6.1 Aligning sender and receiver
After all parts have been mounted and connected, the related sender and receiver must
be aligned in relation to each other.
Secure the plant/system. No dangerous movement possible!
Ensure that the dangerous state of the machine is (and remains) switched off! During the
alignment process, the outputs of the WSU/WEU26@3 devices are not allowed to have any
effect on the machine.
6.1.1 Alignment using the diagnostics LEDs
Switch on power supply. The yellow diagnostics LED of the WSU26-3 must light up.
Align devices such that the green diagnostics LED on the WEU26-3 illuminates.
WSU26-3 WEU26-3
For optimal alignment the sender and receiver, the boundaries are to be determined by
pivoting the sender unit and receiver unit horizontally and vertically. On leaving the related
optical area, the yellow diagnostics LED on the WEU26-3 starts to illuminate. Then fasten
sender and receiver in the middle of the optical area determined.
WARNING
WARNING
and WEU26-3 receiver unit
Yellow Red
Green Yellow Red
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