Operating Instructions Chapter 1
WSU/WEU263
8013338/YTA4/2016-03-24 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 5
Subject to change without notice
About this document
1 About this document
P
lease read this chapter carefully before you work with these operating instructions and
the WSU/WEU26@3 single-beam photoelectric safety switches, referred to in the following
as WSU/WEU26@3 devices.
1.1 Function of this document
These operating instructions are designed to address the technical personnel of the
machine manufacturer or the machine operator in regards to safe mounting, installation,
configuration, electrical installation, commissioning, operation and maintenance of the
WSU/WEU26@3 devices.
These operating instructions do not provide instructions for operating machines on which
the WSU/WEU26@3 devices are, or will be, integrated. Information on this is to be found in
the appropriate operating instructions for the machine.
1.2 Target group
These operating instructions are addressed to planning engineers, machine designers and
operators of plants and systems which are to be protected by the WSU/WEU26@3 devices.
They are also addressed to people who integrate the WSU/WEU26@3 devices into a
machine, initialise its use, or who are in charge of servicing and maintaining the device.
1.3 Scope
These operating instructions are original operating instructions.
These operating instructions are only applicable to the WSU/WEU26@3 single-beam
photoelectric safety switch with one of the following entries on the type label in the field
Operating Instructions:
• 8013336
• 8013336/YTA4
This document is part of SICK part number 8013336 (operating instructions
“WSU/WEU26@3 single-beam photoelectric safety switch” in all available languages).
1.4 Depth of information
These operating instructions contain the following information on the WSU/WEU26@3
devices:
• mounting,
• electrical installation,
• commissioning,
• application,
• error diagnosis and troubleshooting,
• part numbers,
• conformity and approval,
• care and maintenance.
Planning and using protective devices such as the WSU/WEU26@3 devices also require
specific technical skills which are not detailed in this documentation.
When operating the WSU/WEU26@3 devices, the national, local and statutory rules and
regulations must be observed.
General information on accident prevention using opto-electronic protective devices can
be found in the brochure “Guidelines Safe Machinery – Six steps to the safe machine”.