Proximity Sensors Capacitive
Thermoplastic Polyester Housing
Types CA, M12, DC, Teach-in
™
ELD
I
ESH
PL
TRI
• Featuring
TRIPLESHIELD™
Sensor Protection
• Sensing distance: 0.5 - 8 mm
• Teach-in of sensing distance via push-button or
COM-input
• Automatic detection of NPN or PNP load
• Selectable make or break switching by means of
Teach-in function
• Protection: Short-circuit, transients and reverse polarity
• Humidity compensation
• Alarm output
• 5 years of warranty
• On request: Delay on output. New line autotune to
compensate for heavy dirt build-up
Product Description
Capacitive proximity switch-
es with a sensing distance
of either 6 mm flush mount-
ed in metal or 8 mm non-
flush mounted.
The switching points can be
altered by means of the
Teach-in function. 3-wire DC
output with selectable make
(NO) or break (NC) switching
and NPN Alarm. Grey
polyester housing with 2 m
PVC cable or M12 plug.
Ordering Key
Capacitive proximity switch
Housing diameter (mm)
Housing material
Housing length
Detection principle
Rated operating dist. (mm)
Output type
Output configuration
Connection type
CA12CLC08BPM1
Type Selection
Housing diameter
M12
Rated operating distance
(S
n
)
8 mm
Ordering no.
Cable
CA12CLC08BP
Ordering no.
Plug
CA12CLC08BPM1
Specifications
0.5 - 8 mm
factory set at 8 mm
Sensitivity
Adjustable (Teach-in)
Effective operating dist.
(S
r
)
0.9 x S
n
≤
S
r
≤
1.1 x S
n
Usable operating dist.
(S
u
)
0.8 x S
r
≤
S
u
≤
1.2 x S
r
Repeat accuracy
(R)
≤
5%
Hysteresis
(H)
Depending on Teach-in
Rated operational volt.
(U
B
)
10 to 40 VDC (ripple incl.)
Ripple
≤
10%
Rated operational current
(I
e
)
≤
250 mA (continuous)
No-load supply current
(I
o
)
≤
12 mA
Voltage drop
(U
d
)
≤
2.5 VDC @ max. load
Protection
Short-circuit, reverse
polarity, transients
TM
TRIPLESHIELD
protection
Electrostatic discharge
30 kV
Burst
3 kV
Airborne HF
> 15 V/m
Wire-conducted noise
> 10 V
rms
Frequency of operating
cycles
(f)
15 Hz
Sensing range
(S
d
)
Indication
For output ON
For safe/unsafe
Environment
Degree of protection
Operating temperature
Max. temperature on sensing face
Storage temperature
Housing material
Body
Cable end
Nuts
Connection
Cable
Plug (M1)
Cable for plug (M1)
Weight
Cable version
Plug version
Approvals
CE-marking
LED, yellow
LED, green
IP 68
-20 to +85°C ( -4 to +185°F)
120°C (248°F)
-40 to +85°C (-40 to +176°F)
Grey, thermoplastic polyester
Polyester, softened
Black, PA12 Grilamid
Grey, 2 m, 4 x 0.25 mm
2
Oil proof, PVC
M12 x 1
CON.1A-series
110 g
30 g
UL, CSA
Yes
Specifications are subject to change without notice (12.11.04)
1
CA, M12, DC, Teach-in
Adjustment Guide
The environments in which
capacitive sensors are install-
ed can often be unstable re-
garding temperature, humidity,
object distance and industrial
(noise) interference. Because
of this, Carlo Gavazzi offers
as standard features in all
TRIPLESHIELD™
capacitive
sensors a user-friendly sensi-
tivity adjustment instead of
having a fixed sensing range,
extended sensing range to
accommodate mechanically
demanding areas, temperature
stability to ensure minimum
need for adjusting sensitivity if
temperature varies and high
immunity to electromagnetic
interference (EMI).
Note:
Sensors are factory set
(default) to nominal sensing
range S
n
.
Installation Hints
Capacitive sensors have the
unique ability to detect al-
most all materials, either in li-
quid or solid form. Capacitive
sensors can detect metallic
as well as non-metallic ob-
jects, however, their tradition-
al use is for non-metallic
materials such as:
•
Plastics Industry
Resins, regrinds or mould-
ed products.
To avoid interference from inductive voltage/
current peaks, separate the prox. switch pow-
er cables from any other power cables, e.g.
motor, contactor or solenoid cables
•
Chemical Industry
Cleansers, fertilisers, liquid
soaps, corrosives and pe-
trochemicals.
•
Wood Industry
Saw dust, paper products,
door and window frames.
•
Ceramic & Glass
Industry
Raw material, clay or
finished products, bottles.
Relief of cable strain
•
Packaging Industry
Package inspection for level
or contents, dry goods,
fruits and vegetables, dairy
products.
Materials are detected due to
their dielectric constant. The
bigger the size of an object,
the higher the density of ma-
terial, the better or easier it is
to detect the object. Nominal
sensing distance for a capaci-
tive sensor is referenced to a
grounded metal plate (ST37).
For additional information
regarding dielectric ratings
of materials please refer to
Technical Information.
Protection of the sensing face
Switch mounted on mobile carrier
Not correct
Correct
The cable should not be pulled
A proximity switch should not serve as
mechanical stop
Any repetitive flexing of the
cable should be avoided
Dimensions
82.4
50
19.4
50
84.7
18.4
Accessories
•
Plugs CON.1A.. series.
For further information please refer to “Accessories.
10.7
10.7
Delivery Contents
•
Capacitive switch: CA..CLC..BP..
• Packaging:
Cardboard box
• Installation & Adjustment Guide (MAN CAP ENG/GER)
M12 x 1
LED
M12 x 1
LED
M12
Cable
Plug
2
Specifications are subject to change without notice (12.11.04)
CA, M12, DC, Teach-in
Teach-in Guide
Adjustment - Background
No target present
Press push-button >3 seconds until LED´s are flashing one time per second. The background will be calibrated when the
push-button is released during the following 3 seconds
Push-button
LED - Green
LED - Yellow
Time (sec)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Adjustment - Object
Target present
Press push-button >6 seconds until LED´s are flashing two times per second. The object will be calibrated when the push-
button is released during the following 3 seconds
Push-button
LED - Green
LED - Yellow
Time (sec)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Adjustment - NO - NC
Press push-button >9 sec. until LED´s are flashing three times per second. The status of NO-NC will toggle when the push-
button is released during the following 3 seconds
Push-button
LED - Green
LED - Yellow
Time (sec)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Releasing the push-button after 12 sec. returns the sensor to factory settings.
Wiring Diagram
BN+
(1)
BK
(4)
I
LOAD
< 250mA
I
ALARM
< 20mA
The PNP- or NPN-load will automatically be
detected.
By means of the Teach-in wire, the functions
described in the Teach-in Guide can be set-
up.
It is possible to Teach-in more sensors at the
same time by connecting the WH-wires in
parallel to the common ”-” supply.
(#): Plug connections
Important:
If alarm output (WH-wire) is
unused, it has to be terminated to +supply
WH
(2)
Teach-in
BU-
(3)
Specifications are subject to change without notice (12.11.04)
3
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