CARLO GAVAZZI CD34CNFLF Series User manual

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Capacitive sensor, Foreground Suppression
Description
The CD34.. capacitive sensor is designed for
detecting water-based (conductive) liquids through
a non-metallic container wall, and it automatically
adapts to various thicknesses of plastic or glass
walls.
The universal mounting brackets allow the sensor
to be xed on various tubes or containers.
Strong, compact housing with IP69K ratings and
ECOLAB approval for wash-down applications.
The sensor will function out of the box in most
applications, and teach-in capabilities are available
for adapting the sensor to more challenging
applications.
Main features
• Compact housing
• Supply voltage: 10 to 30 VDC
• Output: 100 mA, NPN or PNP preset
• Make or break switching function
• LED indication for output and power ON
• Protection: reverse polarity, short circuit and transients
• Cable and pigtail M8 plug versions
• Excellent EMC performance
• IP65, IP66, IP67, IP68 and IP69K for hose-down
applications
• cULus
• Ecolab
Main functions
• Detection of water-based uids inside a container or tube
without direct contact with the uids.
• The sensor detects the liquids reliably while compensating
for residue lm, moisture or foam build-up from liquids
such as water, milk, body uids (blood), acid- or alkaline
solutions with conductivity as high as 50 mS/cm inside or
outside the container wall.
• Flexible and fast universal mounting bracket.
• The sensing principle detects only the level of the liquids
while ignoring foam, lm or build-up that would cause
standard capacitive sensors to detect faultily.

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
References
Product selection key
CD34CNFLF
Enter the code option instead of
Code Option Description
C-Capacitive sensor
D-Rectangular housing
34 -Length of housing
C-Plastic housing
N-Neutral
F-Flush mounting
L-Liquid level
FForeground suppression
NNPN
PPNP
ON.O.
CN.C.
P2 2 m PVC Cable
T5 Pigtail PVC
Type selection
Connec-
tion Output Code
Cable
NPN, N.O. CD34CNFLFNOP2
NPN, N.C. CD34CNFLFNCP2
PNP, N.O. CD34CNFLFPOP2
PNP, N.C. CD34CNFLFPCP2
Pigtail
NPN, N.O. CD34CNFLFNOT5
NPN, N.C. CD34CNFLFNCT5
PNP, N.O. CD34CNFLFPOT5
PNP, N.C. CD34CNFLFPCT5
Mounting bracket ACD34-MB01

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Structure
A
B
C
E
A
B
C
E
D
E
Fig. 1 Cable Fig. 2 Pigtail Fig. 3 Sensing surface
Element Component Function
ALED Green LED: Power ON
BLED Yellow LED: Output
C2 M3 Fixing holes for sensor mounting
DSensing surface
ERecessed area for cable strips, max. 5 mm wide
Sensing
Accuracy
Temperature drift Factory settings ≤ 20% (-25°C... +80°C)
Manual teach ≤ 20% (-25°C... +60°C)
Detection
Pipes diameter Min. Ø 8 mm
Out of the box:
wall thickness
Plastic 0.5 - 6 mm (non-conductive plastic wall)
Glass 0.5 - 4 mm (non-conductive glass wall)
With manual setup:
wall thickness
Up to 10 mm plastic wall (best case)
Up to 10 mm glass wall (best case)
Detection liquids Water-based liquids such as water, milk, syrup, honey, milkshakes, lubricates, acids,
alkaline uids, body uids and other high-conductive liquids (up to 50 mS)

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Features
Power Supply
Rated operational voltage (UB)10 ... 30 VDC (ripple included)
Ripple (Urpp)≤ 10%
No load supply current (Io)≤ 13 mA
Power-ON delay (tv)< 300 ms
Outputs
Output functions NPN or PNP by sensor type
Output switching function N.O. and N.C by sensor type
Rated operational current (Ie)≤ 100 mA
OFF-state current(Ir) PNP and NPN 50 μA
Voltage drop (Ud)< 1 .5 V
Protection Short circuit, reverse polarity and transients
Utilization category DC-1
Control of resistive loads and
solid-state loads with optical
isolation
DC-13 Control of electromagnets
Load capacitance max at (Ue)330 nF
Operation diagram
Tv = Power-ON delay
power supply ON
Target Present
Break output
(N.C.) ON
Tv
Make output
(N.O.) ON
Tv
Response times
Operating frequency (f) ≤ 10 Hz
Response times ≤ 50 ms OFF-ON (tON)
≤ 50 ms ON-OFF (tOFF)

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Indication
Normal mode
Green LED Yellow LED Power Output
OFF OFF OFF OFF
ON OFF ON OFF
ON ON ON ON
Output short circuit
Green LED Yellow LED Output
OFF Flashes 4Hz Yellow LED ashes minimum 1 sec.
Teach by wire
Out of the box (Factory settings):
Typically, the sensor can be used without any additional calibration; it is designed to work with plastic tank
walls of approximately 0,5 to 6 mm in thickness and glass walls of approximately 0,5 to 4 mm in thickness. It
is important that the glass or plastic is nonconductive.
Calibration:
If the factory settings are insufcient, the sensor is teachable to either Full or Empty.
Calibration Full:
The sensor switch point is set below the actual detection value to ensure that slight changes in the application
will not affect the sensing performance.
In most applications, the full calibration on a full tank or tube will be sufcient.
In critical applications with large variations in media type and temperature, it can be an advantage to teach the
Full level with approximately 50 % of the active sensing surface covered.
Full calibration procedure:
•Connect teach wire to V+ for 2 - 7 seconds
•The green LED ashes 1 imp. per sec. and the yellow LED is OFF
•After successful calibration, the yellow LED ashes 3 times (with 1 Hz)
Calibration Empty:
The sensor switch point is set above the actual detection value to ensure that slight changes in the application
will not affect the sensing performance.
In most applications, the Empty calibration on an empty tank or tube will be sufcient.
In critical applications with a high amount of residue lm, moisture or foam build-up, an Empty calibration can
be performed with the build-up present.
Empty calibration procedure:
•Connect teach wire to V+ for 7 - 12 seconds
•The green LED ashes 1 imp. per sec. and the yellow LED is ON
•After successful calibration, the yellow LED ashes 3 times (with 1 Hz)
Cancel calibration procedure:
•Keep the teach wire connected to V+ for more than 14 seconds to abort teach procedure. The switch points
will remain unchanged.
•The green LED is off and the yellow LED ashes (4 Hz)

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Green LED Yellow LED Output
Flashes 1Hz OFF Full calibration (2-7 sec)
Flashes 1Hz ON Empty calibration (7-12 sec)
NA Flashes 3 times 1Hz Succesful "full calibration"
NA Flashes 3 times 1Hz Succesful "empty calibration"
NA Flashes 10 times 4Hz Unsuccesful calibration (cancelled or error) (>12 sec)
Environmental
Ambient temperature -25°... +80°C (-13°... +176°F) Operating
-40° ... +85°C (-40° ... +185°F) Storage
Ambient humidity range 35% ... 100% Operating
35% ... 100% Storage
Vibration 10 ...150 Hz, 1.0 mm/15 g EN 60068-2-6
Shock 30 gnn / 11ms, 6 pos, 6 neg per axis EN60068-2-27
Drop test 2 x 1 m and 100 x 0.5 m EN 60068-2-31
Rated insulation voltage (Ui)75 VDC
Dielectric insulation voltage ≥ 1250 VAC rms 50/60 Hz for 1 min.
Rated impulse withstand voltage 1 kV 1.2/50 µs
Pollution degree 3ICE60664, ICE60664A,
EN60947-1
Overvoltage category III IEC60664; EN60947-1
Degree of protection IP65, IP66, IP67, IP68 @ 1.3m and 24 h IEC60539; EN60947-1
IP69K DIN 40050-9
NEMA Enclosure Types 1, 2, 4, 4x, 5, 12 NEMA 250
EMC
Electrostatic discharge immunity test ± 8 kV @ air discharge or
± 4 kV @ contact discharge IEC 61000-4-2, EN60947-1
Electromagnetic eld immunity 3 V/m IEC 61000-4-3, EN60947-1
Fast transient immunity 2 kV IEC 61000-4-4, EN60947-1
Wire-conducted noise 3 V IEC 61000-4-6, EN60947-1
Power frequency magnetic eld im-
munity test 30 A/m IEC 61000-4-8, EN60947-1

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Mechanics/electronics
Connection
Cable 2 m, 4-wire 4 x 0.14 mm2, Ø = 3.4 mm, PVC
Pigtail 0.3 m, M8, 4-pin, male
Wiring
Teach-in
I <100mA
LOAD
-
+
1BN
3BU
2WH
4BK
Teach-in
I <100mA
LOAD
-
+
1BN
3BU
4BK
2WH
Fig. 4 PNP NO Fig. 5 NPN NO
Teach-in
I <100mA
LOAD
-
+
1BN
3BU
2WH
4BK
Teach-in
I <100mA
LOAD
-
+
1BN
3BU
4BK
2WH
Fig. 6 PNP NC Fig. 7 NPN NC
NOTE: White wire connected to GND (3BU) wire when not in use
Colour code
BN Brown WH White BK Black BU Blue
Housing
Body PC/PBT
Mounting bracket PC/PBT
Light guides Polyamid TR55, Transparent
Pigtail Black TPU (Thermoplastic polyurethane), Stainless steel AISI 304
Dimensions 8 x 16 x 34 mm
Weight ≤ 60 g Cable version
≤ 30 g Pigtail version
Tightening torque, Sensor 0.2 Nm
Tightening torque, Mounting bracket 0.2 Nm
Screw size M3 (with lowered head)

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Dimensions (mm)
16 8
34 1 .1
16 .3
3
10 3
3.6
6.6
3.2
Fig. 8 CD34
10.5 10.5
52.85
73.85
7.626
Fig. 9 Mounting bracket (ACD34-MB01)

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Carlo Gavazzi Industri A/S
CD34CNFLFxxx
CD34CNFLFxxx ENG21/02/2018
Compatibility and conformity
Approvals and markings
General reference Sensor designed according to EN60947-5-2 and EN60947-1
MTTFd246 years @ 40°C (+104°F) EN ISO 13849-1, SN 29500
CE-marking
Approvals
(UL508 + C22.2)
Other Approvals
Topax 56, Topaz AC1, Topaz
MD3, Topaz CL1, Topactiv OKTO,
P3-hypochloran
Delivery contents and accessories
Delivery contents
• Capacitive sensor: CD34CNFLF…
• Mounting bracket: ACD34-MB01
• 2 x Foam pads 3 mm (for pipe mounting)
• 2 x Adhesive pads 1 mm (for screwless surface mounting)
• Quick installation guide
Accessories
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