Page 355 - Sensors and Systems - North American Catalog
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Proximity Sensors
1
Proximity Sensors,
Capacitive Sensors
1
.2
353
Germany: +49 621 776-4411
Refer to General Notes Relating to Product Information
Pepperl+Fuchs Group
USA: +1 330 486 0001
Singapore: +65 6779 9091
Copyright Pepperl+Fuchs
Proximity Switches
Introduction to Capacitive Sensors
Mounting conditions of capacitive sensors
Mounting the sensor in a machine or plant environment can result in
preattenuation of the sensor due to material located within the detection
range. This preattenuation results in a change in the preset operating
distance. An installed potentiometer can be used to offset these changes
within certain limits. However, if the preset operating distance has not
changed, you must ensure that no material, other than the object, is located
within the sensor detection range (see the gray clearance area). The exact
values for lengths A to F are sensor-specific and are included on the data
sheets of the corresponding product.
C
B
F
clear zone
sensing face
support
Installation conditions for cube-style sensors
C A
B
F
clear zone
sensing face
support
Mounting conditions for cylindrical sensors
Flush mounting capacitive sensors
In addition to the above-mentioned, nonflush mounting of cylindrical
sensors, the sensors can also be flush mounted (measurement A is 0 mm)
in special cases. Pepperl+Fuchs offers specially aligned flush-mountable
sensors (CJ-, CBB-, CCB types) for this purpose. A potentiometer can
also be used with these types of sensor to adapt the operating distance for
different object materials.
Sensors in cube-style housing are generally installed on a base material.
In this case, measurement A is defined by the height of the housing. One
particular feature of capacitive sensors is their shielding against the base
mounting material. The most critical case would involve mounting on a
metallic conductive base plate material. Pepperl+Fuchs sensors can be
used under the above-mentioned conditions for all types of mounting plates.
Type Code, Capacitive Sensors
Electrical Output
A, A0
4-wire, DC, NPN, antivalent
A2
4-wire, DC, PNP, antivalent
E, E0
3-wire, DC, NPN, NO
E1
3-wire, DC, NPN, NC
E2
3-wire, DC, PNP, NO
E3
3-wire, DC, PNP, NC
N, N0
NAMUR, NC
1N, N1
NAMUR, NO
U
2-wire, AC/DC, programm. wiring
UÖ
2-wire, AC/DC, NC
US
2-wire, AC/DC, NO
W
2-wire, AC, programm. wiring
WÖ
2-wire, AC, NC
WS
2-wire, AC, NO
Connection Elements
V1
M12 x 1 device connector for DC proximity switches
V3
M8 device connector for DC proximity switches
V5
Faston connector
V13
M12 x 1 device connector for AC proximity switches
V16
Rd24 x 1/8 device connector for dual sensors in F31 housing
V18
M18 x 1 device connector for valve connection (F31 housing)
C C N15 - 30 G S 60 - E2 - V1
Cylindrical
usable
threaded length
(mm)
C
Capacitive
B
Basis line
C
Comfort line
B
flush
N
non-flush
Operating range
1 mm ... 40 mm
Diameter in mm
Rectangular type
F46, F46A, F64, F104
U VariKont ®
FP Surface switch
M
Metal
(brass, nickel plated)
K
Plastic
S
Stainless steel
1.4305/AISI 303
H
Stainless steel
1.4435/AISI 316L
G
Threading
Limit switch
