turck BCT-M-IOL Series User manual

Your Global Automation Partner
Instructions for Use
BCT…-M…-IOL
NCT…-M…-IOL
Capacitive Sensors

2Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [email protected] | www.turck.com

V01.01 | 2022/03 3
Contents
1 About these Instructions................................................................................................................ 5
1.1 Target groups................................................................................................................ 5
1.2 Explanation of symbols used ..................................................................................... 5
1.3 Other documents ......................................................................................................... 5
1.4 Feedback about these instructions........................................................................... 5
2 Notes on the Product......................................................................................................................6
2.1 Product identification.................................................................................................. 6
2.2 Scope of delivery .......................................................................................................... 6
2.3 Legal requirements...................................................................................................... 6
2.4 Turck service.................................................................................................................. 6
3 For Your Safety................................................................................................................................. 7
3.1 Intended use.................................................................................................................. 7
3.2 Obvious misuse............................................................................................................. 7
3.3 General safety instructions.........................................................................................7
4 Product Description ........................................................................................................................ 8
4.1 Device overview ........................................................................................................... 8
4.1.1 Indication elements .....................................................................................................................8
4.2 Properties and features............................................................................................... 8
4.3 Operating principle...................................................................................................... 8
4.4 Functions and operating modes ...............................................................................9
4.4.1 Internal monitoring functions..................................................................................................9
4.5 Technical accessories.................................................................................................10
5 Installing..........................................................................................................................................12
6 Connection......................................................................................................................................13
6.1 Wiring diagrams .........................................................................................................13
6.1.1 Wiring diagram for …CT…-M08…-V1131 ....................................................................... 13
6.1.2 Wiring diagram for …CT…-M12…-H1141....................................................................... 13
7 Commissioning ..............................................................................................................................14
8 Operation ........................................................................................................................................15
8.1 LED indications ...........................................................................................................15
9 Setting .............................................................................................................................................16
9.1 Settable functions and features ..............................................................................16
9.2 Setting via IO-Link......................................................................................................18
9.2.1 Single value teach...................................................................................................................... 18
9.2.2 Two value teach.......................................................................................................................... 18
9.2.3 Dynamic teach (Autoteach) ................................................................................................... 18
10 Troubleshooting ............................................................................................................................19
11 Maintenance...................................................................................................................................20
12 Repair...............................................................................................................................................20
12.1 Returning devices.......................................................................................................20

Contents
4Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [email protected] | www.turck.com
13 Decommissioning..........................................................................................................................20
14 Disposal ...........................................................................................................................................20
15 Technical Data................................................................................................................................21
16 Turck subsidiaries – contact information..................................................................................22

V01.01 | 2022/03 5
1 About these Instructions
These instructions for use describe the structure, functions and the use of the product and will
help you to operate the product as intended. Read these instructions carefully before using the
product. This is to avoid possible damage to persons, property or the device. Retain the instruc-
tions for future use during the service life of the product. If the product is passed on, pass on
these instructions as well.
1.1 Target groups
These instructions are aimed at qualified personal and must be carefully read by anyone
mounting, commissioning, operating, maintaining, dismantling or disposing of the device.
1.2 Explanation of symbols used
The following symbols are used in these instructions:
DANGER
DANGER indicates a dangerous situation with high risk of death or severe injury if
not avoided.
WARNING
WARNING indicates a dangerous situation with medium risk of death or severe
injury if not avoided.
CAUTION
CAUTION indicates a dangerous situation of medium risk which may result in minor
or moderate injury if not avoided.
NOTICE
NOTICE indicates a situation which may lead to property damage if not avoided.
NOTE
NOTE indicates tips, recommendations and useful information on specific actions
and facts. The notes simplify your work and help you to avoid additional work.
uCALL TO ACTION
This symbol denotes actions that the user must carry out.
aRESULTS OF ACTION
This symbol denotes relevant results of actions.
1.3 Other documents
Besides this document, the following material can be found on the Internet at www.turck.com:
nData sheet
nDeclarations of conformity (current versions)
nCommissioning manual IO-Link devices
nIO-Link parameters manual
1.4 Feedback about these instructions
We make every effort to ensure that these instructions are as informative and as clear as
possible. If you have any suggestions for improving the design or if some information is missing
in the document, please send your suggestions to [email protected].

Notes on the Product
6Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [email protected] | www.turck.com
2 Notes on the Product
2.1 Product identification
These instructions apply to the following capacitive sensors:
B C T 2 – M08 – IOL – H1 1 4 1
B C T 2 Functional principle –
Rated switching distance
…Switching distance Sn
in mm
Special functions
TTeachable
Functional principle
CCapacitive
Installation
BFlush
NNon-flush
M08 Design –
Housing
M08 Threaded barrel, metal,
Ø 8 mm
M12 Threaded barrel, metal,
Ø 12 mm
H1 1 4 1 Electrical connection:
Connector
Assignment
1Standard assignment
Number of contacts
…Number of contacts
Connector
1Straight
Connector
H1 M12 × 1 receptacle
V1 M8 × 1 receptacle
IOL Electrical version –
Communication
IOL IO-Link interface
2.2 Scope of delivery
The scope of delivery includes:
nCapacitive Sensor
nTwo nuts for mounting
2.3 Legal requirements
The devices are subject to the following EU directives:
n2014/30/EU (electromagnetic compatibility)
n2011/65/EU (RoHS directive)
2.4 Turck service
Turck supports you with your projects, from initial analysis to the commissioning of your applic-
ation. The Turck product database under www.turck.com contains software tools for program-
ming, configuration or commissioning, data sheets and CAD files in numerous export formats.
The contact details of Turck subsidiaries worldwide can be found on p. [}22].

V01.01 | 2022/03 7
3 For Your Safety
The product is designed according to state-of-the-art technology. However, residual risks still
exist. Observe the following warnings and safety notices to prevent damage to persons and
property. Turck accepts no liability for damage caused by failure to observe these warning and
safety notices.
3.1 Intended use
The capacitive sensors detect without contact the presence of solid, powder or liquid objects.
The devices may only be used as described in these instructions. Any other use is not in accord-
ance with the intended use. Turck accepts no liability for any resulting damage.
3.2 Obvious misuse
nThe devices are not safety components and must not be used for personal or property
protection.
3.3 General safety instructions
nThe device meets the EMC requirements for industrial areas. When used in residential areas,
take measures to avoid radio interference.
nThe device may only be assembled, installed, operated, parameterized and maintained by
professionally-trained personnel.
nThe device may only be used in accordance with applicable national and international
regulations, standards and laws.
nNot all objects are detected equally well by the sensor. The detection of the object must be
checked by the user prior to regular operation.
nThe power supply must comply with the regulations for a low voltage power supply with
safe isolation (SELV or PELV).

Product Description
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4 Product Description
The devices are contained in a metal housing with an M8 or M12 male thread. The active face
can be mounted flush or non-flush with the surrounding area. All devices are provided with an
M8 or M12 male connector for connecting the sensor cable.
The device can only be parameterized via IO-Link.
4.1 Device overview
mm [Inch]
44.8 [1.76]
24 [0.64]
13/4
M8 × 1 M8 × 1
Ø 6.5 [0.26]
LED
mm [Inch]
47.9 [1.89]
27 [1.06]
3 [0.12]
13/4
M8 × 1 M8 × 1
Ø 6.5 [0.26]
LED
Fig.1: BCT2-M08-IOL-V1131 Fig.2: NCT3-M08-IOL-V1131
mm [Inch]
45 [1.77]
27 [1.06]
17/4
M12 × 1 M12 × 1
Ø 10.6 [0.42]
LED
mm [Inch]
4 [0.16]
49 [1.93]
31 [1.22]
17/4
M12 × 1 M12 × 1
Ø 10.6 [0.42]
LED
Fig.3: BCT4-M12-IOL-V1141 Fig.4: NCT8-M12-IOL-V1141
4.1.1 Indication elements
The devices are provided with four yellow LEDs. The LEDs indicate the status of the switching
output.
4.2 Properties and features
nCylindrical threaded barrel
nBrass, galvanized
nYellow plastic cap
nFlush or non-flush design
nParameterization via IO-Link
4.3 Operating principle
The capacitive sensors are used for the contactless and wear-free detection of metallic (electric-
ally conductive) and non-metallic (electrically non-conductive) objects. The sensors enable the
counting or monitoring of moving objects. The sensors can also detect liquids or bulk material
through a non-metallic container wall.

V01.01 | 2022/03 9
4.4 Functions and operating modes
The devices are factory set as proximity switches with a rated switching distance of 2mm
(BCT2…), 3mm (NCT3…), 4mm (BCT4…) or 8mm (NCT8…). The rated switching distances can
be adjusted.
The device can only be parameterized via IO-Link.
The devices are SIDI compatible.
SIDI (Simple IO-Link Device Integration) enables IO-Link devices in PROFINET applications to be
configured directly in the programming environment (e.g. TIA Portal). The Turck IO-Link devices
are integrated in the GSDML file of the TBEN, TBPN and FEN20 series IO-Link masters and can be
set in the programming environment as submodules of a modular I/O system. The user has
access here to all device properties and parameters.
4.4.1 Internal monitoring functions
The device is provided with an internal temperature monitoring.
The device is also equipped with a monitoring function. The monitoring function enables
conclusions to be drawn about the load and the failure probability of the sensor. The device
status can be indicated via the IO-Link parameters.

Product Description
10 Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [email protected] | www.turck.com
4.5 Technical accessories
The following accessories are not supplied with the device:
Dimension drawing Type ID Description
41
24
54
M12 × 1 16
USB-Mini
IN-DC
LED:
CH1 (C/Q)
CH2 (DI/DO)
Error
LED: PWR
USB-2-
IOL-0002
6825482 IO-Link adapter V1.1 with
integrated USB interface
9
33.5
M8 x 1 ø 9.6
L
14 M12 x 1
ø 15
49.5
18.2
PKG4M-2-
RSC4.4T/TXL
6627063 Connection cable, M8 female
connector, straight, 4-pin; M12
male connector, straight, 4-pin;
cable length: 2 m, sheathing
material: PUR, black; cULus
approval; other cable lengths
and types available, see
www.turck.com
9
33.5
M8 x 1 ø 9.6
L
50
5
PKG3M-2/
TXL
6625550 Connection cable, M8 female
connector, straight, 3-pin, cable
length: 2 m, sheathing material:
PUR, black; cULus approval;
other cable lengths and types
available, see www.turck.com
23.5
16.5
9
M8 x 1 ø 9.5
L
50
5
PKW3M-2/
TEL
6625064 Connection cable, M8 female
connector, angled, 3-pin, cable
length: 2 m, sheathing material:
PVC, black; cULus approval;
other cable lengths and types
available, see www.turck.com

V01.01 | 2022/03 11
Dimension drawing Type ID Description
23.5
16.5
9
M8 x 1 ø 9.5
L
50
5
PKW3M-2/
TXL
6625556 Connection cable, M8 female
connector, angled, 3-pin, cable
length: 2 m, sheathing material:
PUR, black; cULus approval;
other cable lengths and types
available, see www.turck.com
14
42
11.5
ø 15
M12 x 1
L
50
5
RKC4.4T-2/
TXL
6625503 Connection cable, M12 female
connector, straight, 4-pin, cable
length: 2 m, sheathing material:
PUR, black; cULus approval;
other cable lengths and types
available, see www.turck.com
26.5
M12 x 1
ø 15
32
14
L
50
5
WKC4.4T-2/
TEL
6625025 Connection cable, M12 female
connector, angled, 4-pin, cable
length: 2 m, sheathing material:
PVC, black; cULus approval;
other cable lengths and types
available, see www.turck.com
14 ø 16.2
48.5
M12 x 1
L
14 M12 x 1
ø 15
49.5
18.2
RKC4.4T-
P7X2-2-
RSC4.4T/TEL
6627320 Connection cable, M12 female
connector, straight, 4-pin; M12
male connector, straight, 4-pin;
cable length: 2 m, sheathing
material: PUR, black; cULus
approval; other cable lengths
and types available,
see www.turck.com
In addition to the above connection cables, Turck also offers other cable types for specific
applications with the correct terminals for the device. More information on this is available
from the Turck product database at www.turck.de/products in the Connectivity area.

Installing
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5 Installing
NOTE
When using more than one sensor in the application: Avoid the overlapping of
electrical fields.
An overlap can occur if two sensors are mounted closer together than the stated
minimum mounting distances.
Observe the minimum mounting distances.
The sensors can be mounted in any direction. The maximum tightening torque for fastening
the sensor is 5 Nm.
Clean the mounting surface and surroundings.
When using a mounting aid: fasten the sensor in the mounting aid.
Install the sensor or mounting aid at the intended position.
Ensure that the rear plug connector is accessible.
W
G
D
S
Fig.5: Minimum mounting distances
The minimum mounting distances are as follows:
Distance BCT2… NCT3… BCT4… NCT8…
G 16mm 16mm 18mm 18mm
S 12mm 12mm 18mm 18mm
D 16mm 16mm 24mm 24mm
W 8mm 8mm 9mm 9mm

V01.01 | 2022/03 13
6 Connection
Connect the female connector of the connection cable to the male connector of the
sensor.
Connect the open end of the connection cable to an SELV or PELV power supply and/or
processing units.
6.1 Wiring diagrams
6.1.1 Wiring diagram for …CT…-M08…-V1131
1 BN
4 BK
3 BU
1
4
3
+
–
switch / IO-Link
Fig.6: Pin assignment Fig.7: Wiring diagram
6.1.2 Wiring diagram for …CT…-M12…-H1141
4
31
2
1
2
4
3
+
–
n.c.
switch / IO-Link
Fig.8: Pin assignment Fig.9: Wiring diagram

Commissioning
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7 Commissioning
The device is operational automatically once the cables are connected and the power supply is
switched on.

V01.01 | 2022/03 15
8 Operation
The factory set switching distance is 2mm (BCT2…), 3mm (NCT3…), 4mm (BCT4…) or 8mm
(NCT8…).
The output function is factory set as NO (NO contact) and the output signal as PNP.
8.1 LED indications
LEDs Meaning
Yellow Sensor actuated
Yellow flashing (2 × 2Hz) Teach-in operation successful. The sensor switches to normal
operation.
Yellow flashing (10Hz) Dynamic teach active

Setting
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9 Setting
The capacitive sensor is provided with a switching output with an adjustable switching point.
The sensor switches automatically to normal operation after the teach-in operation is success-
fully completed. The time interval between two teach-in operations can be any length.
The device can only be parameterized via IO-Link.
NOTE
The taught in value is rejected if a determined switching point is outside of the
assured switching distance. The device indicates an error and returns to normal
operation without any changes.
9.1 Settable functions and features
Parameter Meaning
Application Specific Tag The specific application can be described in which the sensor is used.
Parameter (write) Access Lock Access to the device parameters is locked or unlocked.
Device Reset The command restarts the device. Communication is interrupted momentarily.
Application Reset The function resets application parameters. Communication is not interrupted
and the sensor is switched to a predefined operating state. Identification
parameters are not affected by this command.
Restore Factory Settings The function restores the device to the factory setting. The device is restarted
after the reset. Communication is interrupted.
Reset diagnostic information All diagnostics information of the device is reset to the factory setting. The
counter of the switching operations and the maximum and minimum of the
sensor signal are also reset.
Sensing mode The device offers three modes with different scan rates:
nStandard (100Hz)
nAccuracy (10Hz)
nSpeed (200Hz)
Switching output mode The switching output can be configured as a PNP or NPN output. The PNP output
is active by default.
Function The switching output can be set either as an NO contact or as an NC contact.
NO contact is active by default.
Hysteresis value The size of the hysteresis window can be set in % (10% or 20% of the maximum
sensor signal).
Current switching point The current switching point can be set manually. It is also possible to view the
current switching point.
Switching output switch-on
delay
The switch-on of the switching output can be delayed.
Switching output switch-off
delay
The switch-off of the switching output can be delayed.
Single Value Teach start The single value teach-in is started. The current process value is calculated here
and is set as the switching point. A value below the switching point activates the
switching output. The process value range is from 0…5000, with 0 correspond-
ing to the possible full scale of a detected object.
Two Value Teach without object
(teachpoint 1)
The two-value teach-in is started. Perform teach-in without object in front of the
sensor. The result is stored in the Teach point parameter.
Two Value Teach with object
(teachpoint 2)
Perform teach-in with object in front of the sensor. If both teach points are
present, the teach-in can be started via the Two Value Teach apply parameter.

V01.01 | 2022/03 17
Parameter Meaning
Two Value Teach apply The two-value teach-in from teach point 1 and teach point 2 is used. The
arithmetic average value of the two teach points is set as a switching point.
Dynamic Teach start The dynamic teach-in is started. All objects that pass the sensor are measured.
The highest and lowest value of the object is determined. The arithmetic average
value is formed from the two values. The LEDs flash at a frequency of 10 Hz dur-
ing the operation. The teach-in is performed until the teach-in is stopped via Dy-
namic Teach stop.
Dynamic Teach stop The dynamic teach-in is stopped. The arithmetic average value of the two teach
points is set as a switching point.
SP1 teach point status It is possible to view at SP1 teach point status whether the current teach-in
operation was successful.
Teach cancel The current teach-in operation is aborted and all teach points are set to zero.

Setting
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9.2 Setting via IO-Link
9.2.1 Single value teach
The single value teach teaches a detected object as a switching point.
Position the object in front of the sensor head. The distance must correspond to the
distance in the application.
Select the Single Value Teach start parameter in the FDT frame.
aThe Current switchpoint value parameter is set in the sensor.
aThe Teach quality parameter shows the result of the teach-in operation.
9.2.2 Two value teach
The two value teach makes it possible to teach in two teach points (sensor values). The sensor
sets the arithmetic average value of the two teach points as a switching point. The first value
can be taught in with or without an object. The second value must detect an object.
The teach-in operation can be used to distinguish between two objects. This requires the differ-
ence between measured process values to be sufficiently large. If the difference is insufficient,
the sensor outputs the Teachpoint 1 and 2 not taught or not successful message.
If a first object is present: position the object in front of the sensor head. The distance
must correspond to the distance in the application.
Irrespective of whether an object is present: select Two Value Teach without object
(teachpoint 1).
Position the second object in front of the sensor head. The distance must correspond to
the distance in the application.
Select Two Value Teach with object (teachpoint 2).
Confirm teach-in with Two Value Teach apply.
aThe Current switchpoint value parameter is set in the sensor.
aThe Teach quality parameters shows the result of the teach-in operation.
9.2.3 Dynamic teach (Autoteach)
Dynamic teach (Autoteach) automatically teaches in two two teach points (sensor values). The
sensor sets the arithmetic average value of the two teach points as a switching point. The
teach-in operation can be set during the process.
Select the Dynamic Teach start parameter in order to start the teach-in operation.
aThe LEDs flash yellow at a frequency of 10Hz.
Move objects past the sensor at least 10 × or for at least 10s. The distance must corres-
pond to the distance in the application.
Select the Dynamic Teach stop parameter if all objects were detected multiple times.
aThe Current switchpoint value parameter is set in the sensor.
aThe switching point is taught in successfully if the LEDs flash 2 × at a frequency of 2Hz.

V01.01 | 2022/03 19
10 Troubleshooting
If the device does not function as expected, first check whether ambient interference is present.
If there is no ambient interference present, check the connections of the device for faults.
If there are no faults, there is a device malfunction. In this case, decommission the device and
replace it with a new device of the same type.

Maintenance
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11 Maintenance
Ensure that the plug connections and cables are always in good condition.
The devices are maintenance-free, clean dry if required.
12 Repair
The device must not be repaired by the user. The device must be decommissioned if it is faulty.
Observe our return acceptance conditions when returning the device to Turck.
12.1 Returning devices
Returns to Turck can only be accepted if the device has been equipped with a Decontamination
declaration enclosed. The decontamination declaration can be downloaded from
https://www.turck.de/en/retoure-service-6079.php
and must be completely filled in, and affixed securely and weather-proof to the outside of the
packaging.
13 Decommissioning
Disconnect the connection cable from the power supply and/or processing units.
Disconnect the connection cable from the device.
Undo the connections of the device or if necessary the mounting aid for the mounting
area.
If present: undo the connection between the device and the mounting aid.
14 Disposal
The devices must be disposed of correctly and must not be included in general
household garbage.