Chapter
4
Operating Instructions
M4000 Adv., Adv. A/P, Area
24
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8010797/YT72/2016-02-19
Subject to change without notice
Muting
4.1.2
Muting sensors
Muting sensors detect material and supply the signals which an evaluation unit requires
for the logic operation.
Sensor signals can be generated by the following external sensors:
optical sensors
inductive sensors
mechanical switches
controller signals
SICK muting sensors
A selection of optical muting sensors is given in the following. Depending on the type (light-
switching or dark-switching), you can use these as testable or non-testable sensors.
You can use testable muting sensors in conjunction with the UE403 safety relay or a
sens:Control device. For this purpose, the sensor test function of the M4000 multiple light
beam safety device must be configured (see section 6.2 “Sensor test” on page 50ff.).
Sensor
Type
Testable
Non-testable
WT24
WT27
Dark switching
Light switching
Photoelectric
proximity switch
WT280
Not possible
Light switching
WL24
WL27
Dark switching,
reflector moving on
the object
Dark switching
WL280
Not possible
Dark switching
WL12
Not possible
Dark switching
WL14
Not possible
Dark switching
Photoelectric reflex
switch
WL18 Dark
switching,
reflector moving on
the object
Dark switching
WS24/WE24
WS27/WE27
Through-beam
photoelectric switch
WS280/WE280
Not possible
Dark switching
For the selection and settings for the SICK optical muting sensors in muting applications,
the following applies:
Outputs must be PNP switching.
Other series are possible.
Pay attention to the output signals in chapter 6.2.
Recommendation
Note
Tab. 5: Selection and set-
tings for the SICK optical
muting sensors in muting
applications
Note
