ADDENDUM OPERATING
INSTRUCTIONS
WSU/WEU26-3-S01
Single-beam photoelectric
safety switch
SICK AG • Erwin-Sick-Straße 1
D-79183 Waldkirch • www.sick.com
8021807/16Z7/2020-02-24 • 2M/TD
Printed in Germany (2020-02)
• All rights
reserved • Subject to change without notice
1 About this document
This document is an original document.
1.3 Scope
This addendum provides information on the
properties of the following single-beam
photoelectric safety switches:
WSU26-3-103A00S01
WEU26-3-203A00S01
This addendum only applies …
only for the single-beam photoelectric safety
switch WSU/WEU26-3 with the following entry
on the type label in the field Operating
Instructions: 8021807
only in conjunction with the underlying operating
instructions „WSU/WEU26-3 Single-beam
photoelectric safety switch“ in all available
languages, SICK part number 8013336/YTA4.
3.1 Special features
Contrary to the information in the underlying
operating instructions, the following product
features apply:
M12×8 male connector at sender and receiver.
The receiver WEU26-3-203A00S01 has an
operating range of 15 to 70 m.
5.2 System connection
The floating relay contacts on the receiver
(normally closed and normally open contacts)
are allowed to be operated with a switching
voltage of maximum 30 V DC.
Due to the wire cross-section (0.25 mm²), both
the switching current and supply current must
be limited to maximum 1.5 A.
For the trouble-free operation of the device, a
functional earth (FE) must be connected (it is
not allowed to connect a protective earth (PE)).
If a safety relay (e.g. UE43) is used for cross-
circuit monitoring on the connecting cables, a
functional earth (FE) must also be connected.
Pin assignment sender
Pin
M12×8
Signal designation Pin
internal
Pin assignment receiver
Pin
M12×8
Signal designation
Pin
internal
9 Technical data
General system data
10D
1×10
6
switching operations
DC-13 with 24 V/1.5 A:
2×10
5
switching operations
Receiver unit
Reference loads by usage category
DC-13 with 24 V/1.5 A
10.1 Ordering information
Part Type Part number
Single-beam photoelectric safety switch:
Sender unit
Single-beam photoelectric safety switch:
Receiver unit, scanning range 15 … 70 m