turck RU CK40 Series User manual

Your Global Automation Partner
Instructions for Use
RU…CK40 | RU…CP40
Ultrasonic Sensors

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

V2.0 | 2021/06 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......................................................................................................... 9
4.4 Functions and operating modes ................................................................................10
4.4.1 Setting options ...............................................................................................................................10
4.4.2 Diffuse mode sensor.....................................................................................................................10
4.4.3 Retroreflective mode....................................................................................................................13
4.5 Technical accessories for RU200-CK40…..................................................................14
5 Installing.............................................................................................................................................15
5.1 RU200-CK40 – changing the active face ...................................................................16
5.2 RU200-CP40 – changing the active face ...................................................................17
6 Connection.........................................................................................................................................19
6.1 Wiring diagram ..............................................................................................................19
6.1.1 Wiring diagrams – RU200-CK40…...........................................................................................19
6.1.2 Wiring diagrams – RU200-CP40…...........................................................................................20
7 Commissioning .................................................................................................................................21
8 Operation ...........................................................................................................................................22
8.1 Operation as a diffuse mode sensor – LEDs .............................................................22
8.2 Operation as a retroreflective sensor – LEDs ...........................................................22
9 Setting ................................................................................................................................................23
9.1 RU200-CK40 – Setting via a teach adapter...............................................................24
9.2 RU200-CK40 – Setting by manual bridging (shorting)...........................................33
9.3 RU200-CK40… and RU200-CP40… – Setting via pushbuttons............................41
10 Troubleshooting ...............................................................................................................................50
11 Maintenance......................................................................................................................................51

Contents
4Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [email protected] | www.turck.com
12 Repair..................................................................................................................................................51
12.1 Returning devices..........................................................................................................51
13 Disposal ..............................................................................................................................................51
14 Technical Data...................................................................................................................................52
15 Turck Subsidiaries - Contact Information ....................................................................................53

V2.0 | 2021/06 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 in-
jury 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
nEU Declaration of Conformity (current version)
1.4 Feedback about these instructions
We make every effort to ensure that these instructions are as informative and as clear as pos-
sible. 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
Turck service
6Hans Turck GmbH & Co. KG | T [phone] | F [phone] | [email protected] | www.turck.com
2 Notes on the Product
2.1 Product identification
RU 200 Series –
Range
…[cm]
Functional principle
RU Ultrasonic sensor
CK40 Design –
Housing
CK… Rectangular, plastic, flange
connector, dimensions in mm
C P… Rectangular, plastic terminal
chamber, dimensions in mm
RU 200 – CK40 – LIU2 P 8 X2 T – H1 1 5 1
LIU2 P 8 X2 T Electrical
version –
TWith teach
button
Blank Without teach
button
Indication
X2 Number of
LEDs
Voltage range
815…30 VDC
Output mode
NNPN‐
output
PPNP-
output
Output function
2Number out-
puts, if > 1
LIU Analog output
and voltage
H1 1 5 1 Electrical Connection:
Connector
Assignment
1Standard assignment
Number of contacts
5Contacts
Connestor type
1Straight
Connector design
H1 Flange connector
M12 × 1
2.2 Scope of delivery
The scope of delivery includes:
nUltrasonic sensor
nQuick Start Guide
2.3 Legal requirements
The device is subject to the following EC 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. [}53].

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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 ultrasonic sensors detect the presence of solid or liquid objects and the distance to those
objects without making physical contact.
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 pro-
tection.
3.3 General safety instructions
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 regu-
lations, 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.
nStrong air movements can disturb the correct function of the sensor and corrupt the meas-
ured values. Avoid air currents between the sensor and the object to be detected.

Product Description
Properties and features
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4 Product Description
The rectangular devices are provided with a plastic housing. The active face can be configured
in five positions and is suitable for flush, partially flush and non-flush mounting.
The devices are provided with a metal M12 connector (RU200-CK40...) for connecting the
sensor cable or a terminal chamber for a cable gland (RU200-CP40...). A switching distance can
be set for object detection, which must be less than or equal to the maximum detection range,
and greater than the minimum switching distance. The devices can be set via the pushbuttons.
RU200-CK40... devices can also be set with a teach adapter or by manual bridging.
RU…2UP devices with two switch outputs (PNP or NPN) or RU…LIU devices with a switch out-
put (PNP or NPN) and analog output (current/voltage) are provided. The switching distance and
other functions can be set for both outputs.
4.1 Device overview
40
40
30
M12 x 1
20
ø 5.3 5.3 x 7.3
62
67
LED
48
Button 1
Button 2
48.6
30
ø 5.3
60
117.3
34
40
LED
Button 1
Button 2
M20 x 1.5
48.6
1/2-14NPT
30
ø 5.3
60
117.3
34
40
Button 1
Button 2
LED
Fig.1: Dimensions –
RU200-CK40…
Fig.2: Dimensions–
RU200-CP40… with
M20×1.5 thread
Fig.3: Dimensions–
RU200-CP40…/S10 with
NPT thread
4.1.1 Indication elements
The ultrasonic sensors are provided with a green and a yellow LED.
4.2 Properties and features
nSeparate sonic transducers for transmitter and receiver
nRectangular design 40 × 40 mm
nAdjustable measuring range
nM12 × 1 male connector (only RU200-CK40…)
nTerminal chamber (only RU200-CP40…)

V2.0 | 2021/06 9
4.3 Operating principle
Ultrasonic sensors are designed for the non-contact and wear-free detection of a variety of tar-
gets by means of sound waves. It does not matter here whether the target is transparent or
non-transparent, metallic or non-metallic, solid, liquid or in powder form. Environmental condi-
tions such as spray, dust or rain also hardly affect the functioning of the sensors.
Ultrasonic sensors emit one or several ultrasonic pulses that are propagated in the air at the
speed of sound. A part of the ultrasonic wave is reflected by the object. The sensor measures
the total time of flight from the sensor to the object and back to the sensor. The distance to the
object is then calculated with the following formula:
D=c×t/2
D Distance from the sensor to the object in m
c Speed of sound in air in m/s
t Time of flight for the ultrasonic pulse in s
To improve accuracy, the ultrasonic sensor forms the mean value from the measurement of
several sound pulses before outputting a new value. The ultrasonic velocity depends on the
composition and the temperature of the gas in which the sound is propagated. In most ultra-
sound applications, the composition of the gas is stable whereas the temperature may often
fluctuate.
The speed of sound in air varies with the temperature according to the following approxima-
tion formula:
cair= 20×√(273+T)
cair Speed of sound in air in m/s
T Temperature in °C
The speed of sound at an air temperature of 20 °C is approximately 344 m/s
The following formula applies to sensors with integrated temperature compensation:
cair= (331.5×0.596+T)
Fluctuations in air temperature affect the speed of sound, which in turn has an effect on the
total time for the echo measured by the sensor. An increase in air temperature shifts both
measuring range limits closer to the sensor and the time of flight of the echo is shorter. A drop
in air temperature shifts both measuring range limits away from the sensor and the time of
flight of the echo is longer. This shift is approximately 3.5% of the limit distance with a temper-
ature change of 20°C.
Good ultrasonic reflectors are metals, glass, stone, wood with smooth and hard surfaces, as well
as liquids that are aligned appropriately to the sensor. Cloth, sand or grains absorb some of the
sonic energy. Foams and skins are particularly poor reflectors.

Product Description
Functions and operating modes
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4.4 Functions and operating modes
The ultrasonic sensors are provided with two switching outputs that can be set independently
of each other. Two switching outputs (RU-…-2U…) or one switching output and a freely config-
urable output (current, voltage or switching output) (RU200-…-LIU…) are available, depending
on the device variant. On devices with a freely configurable output, output 1 can be used as a
switching output, and output 2 can either be used as a switching output, current output
(4…20mA/0…20mA) or voltage output (0…10V/0…5V/1…6V ). The start and end point of
the measuring range can be set for the outputs. The measuring range must be within the de-
tection range.
The sensors can be run in normal operation as a diffuse mode or retro-reflective sensor. The
user can set an individual switch point as well as a window or hysteresis function.
4.4.1 Setting options
The devices feature the following setting options:
RU200-CK40… RU200-CP40…
nSetting by manual bridging (shorting)
nSetting with connected teach adapter
(accessories to be ordered separately)
nSetting via the pushbuttons
nSetting via the pushbuttons
4.4.2 Diffuse mode sensor
The diffuse mode is the standard operating mode of most ultrasonic sensors The sensor detects
the required object via the echo of the ultrasonic waves. The distance to an object is determ-
ined from the time of flight. Any additional wiring or accessories are not required.
When using diffuse mode sensors, a switching point or switch window is defined. The switch
window is used for window or hysteresis functions.
Diffuse mode sensor with NC function
When used as a diffuse mode sensor with an NC function, a switching point is taught in for a
switch output. The output behaves as follows:
0
1
SP1
detection range
blind
zone
Fig.4: Diffuse mode sensor with NC function – Behavior of the switching output

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Diffuse mode sensor with NO function
When used a diffuse mode sensor with an NO function, a switching point is taught in for a
switch output. The output behaves as follows:
0
1
SP1
detection range
blind
zone
Fig.5: Diffuse mode sensor with NO function – Behavior of the switching output
Window function
The start and end point of the switch window range can be set for the outputs. The switch
window must be within the detection range.
0
1
SP1 SP2 max
detection range
blind
zone
out
Fig.6: Window function – Behavior of the switching output

Product Description
Functions and operating modes
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Hysteresis function
When using the hysteresis function, a switch window is taught in that is defined by two switch-
ing points. The switching outputs have the following behavior as outputs:
If an object is moved away from the sensor, the switching output is switched on for as long as
the object is located between the beginning of the detection range and switching point 2. If
the object passes switching point 2, the switching output is switched off. If an object is moved
towards the sensor, the switching output is switched off for as long as the object is located
between the beginning of the detection range and switching point 1. If the object passes
switching point 1, the switching output is switched on.
0
1
switch-on switch-off
detection range
blind
zone
out out
Fig.7: Hysteresis function – behavior of switching output
Behavior of the analog output
Output 2 is factory set as an analog output and can be used either as a 4…20mA/0…20mA
current output, a 0…10V/0…5V/1…6V voltage output or as a switching output. The analog
output behaves as follows:
U
[V]
10
0 4
I
[mA]
20
beginning
detection range
measuring range
end
blind
zone
U
[V]
10
0 4
I
[mA]
20
beginning end
detection range
measuring range
blind
zone
Fig.8: Analog output – output behavior Fig.9: Analog output inverted –
output behavior
The analog output transmits 0 V or 4 mA in the event of echo loss.

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4.4.3 Retroreflective mode
When used as a retroreflective sensor, the sensor detects the echo of the ultrasonic waves of
the taught reflector. The reflector can be any object with a surface that is as smooth as possible.
The sensor generates a short switching window around the position of the reflector and de-
tects the echo. The sensor switches if the echo is blocked or deflected by another object.
This operating mode is normally more reliable than the diffuse mode and is particularly suitable
for objects that are difficult to detect and in difficult ambient conditions.
Any additional wiring or accessories are not required.
Synchronization with other sensors is not possible in this operating mode.
When used as a retroreflective sensor switching output2 is switched on. The behavior of
switching output 1 is inverted in relation to switching output 2.
0
1
target
out2
out1
detection range
blind
zone
Fig.10: Retroreflective mode – behavior of the switching output

Product Description
Technical accessories for RU200-CK40…
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4.5 Technical accessories for RU200-CK40…
The following accessories are not included in the scope of delivery:
Dimension drawing Type Ident-No. Description
60
30
50
20
M12 x 1
M12 x 1
42.5
ø 15
ø 4.5
8
TX1-Q20L60 6967114 Teach adapter
42
11.5
ø 15
M12 x 1
L
RKC4.5-2/
TEL
6625016 Connection cable, M12 female
connector, straight, 5-pin, cable
length: 2 m, sheathing material:
PVC, black; cULus approval; other
cable lengths and types
available, see www.turck.com
26.5
M12 x 1
ø 15
32
L
WKC4.5T-2/
TEL
6625028 Connection cable, M12 female
connector, angled, 5-pin, cable
length: 2 m, sheathing material:
PVC, 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.

V2.0 | 2021/06 15
5 Installing
NOTE
When using more than one ultrasonic sensor in an application: Avoid the overlap-
ping of sonic cones.
An overlap can occur if two sensors are mounted closer than 2500 mm apart.
The sensors can be mounted in any direction.
Clean the mounting surface and its 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.
Mount the sensor so that the blind zone is clear of any relevant objects (see wave
patterns or technical data).
0
-150
-100
-50
50
100
150
0 20 40 60 80 100 110 120 140 160 200
cm
100x100 mm
ø 27 mm
Fig.11: Wave pattern

Installing
RU200-CK40 – changing the active face
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5.1 RU200-CK40 – changing the active face
The active face can be set in five different directions:
nActive face front (as supplied)
nActive face left
nActive face right
nActive face up
nActive face down
Undo the locking screw.
Pull the sensor from the mounting bracket.
Undo the screws on the sensor.
Remove the adapter bracket and rotate 180°.
Re-tighten the screws on the sensor and align the male connector if necessary.
Fit the sensor and the mounting bracket and tighten the locking screw.
2x
Fig.12: Undo the locking screw Fig.13: Pull the sensor out of
the mounting bracket
Fig.14: Undo the screws on
the sensor
1.
2.
2x
0.7 Nm
Max. 315°
Fig.15: Remove the adapter
bracket and rotate 180°
Fig.16: Tighten the screws on
the sensor and align the male
connector
Fig.17: Fit the sensor and the
mounting bracket and tighten
the locking screw

V2.0 | 2021/06 17
5.2 RU200-CP40 – changing the active face
The active face can be set in five different directions:
nActive face front (as supplied)
nActive face left
nActive face right
nActive face up
nActive face down
Undo the locking screws.
Pull the sensor from the connection socket (A).
Optional: Undo the screws on the sensor.
Optional: Remove the adapter bracket and turn it 180°.
Optional: Fasten screws on the sensor.
Align the plug connector.
Fit the sensor in the connection socket and tighten the locking screws.
6.3 mm
4 mm
Fig.18: Undoing the locking screws Fig.19: Pulling the sensor from the connection
socket
6.3 mm
4 mm
Fig.20: Optional: Undoing the screws on the
sensor
Fig.21: Optional: Removing the adapter
bracket and turning it 180°
Max. 315°
6.3 mm
4 mm
Fig.22: Optional: Fastening screws on the
sensor
Fig.23: Aligning the plug connector

Installing
RU200-CP40 – changing the active face
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6.3 mm
4 mm
Fig.24: Fitting the sensor in the connection
socket and tightening the locking screws

V2.0 | 2021/06 19
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 the power supply and/or processing
units.
6.1 Wiring diagram
6.1.1 Wiring diagrams – RU200-CK40…
4 BK
1 BN3 BU
2 WH
5 GY
(BU)
(BN)
(WH)
(BK)
+
–
3
1
2
4
5 (GY) teach-in
Fig.25: Pin assignment Fig.26: Connection diagram –
RU200-CK40-2UP8…
4 BK
1 BN3 BU
2 WH
5 GY
(BU)
(BN)
(WH)
(BK)
+
–
3
1
2
4
5 (GY) teach-in
Fig.27: Pin assignment Fig.28: Connection diagram –
RU200-CK40-2UN8…
4 BK
1 BN3 BU
2 WH
5 GY
(WH)
(BN)
(BU)
(BK)
+
–
2
1
3
4
5 (GY) teach-in
analog
I
Fig.29: Pin assignment Fig.30: Connection diagram –
RU200-CK40-LIU2P8…
4 BK
1 BN3 BU
2 WH
5 GY
(WH)
(BN)
(BU)
(BK)
+
–
2
1
3
4
5 (GY) teach-in
analog
I
Fig.31: Pin assignment Fig.32: Connection diagram –
RU200-CK40-LIU2N8…

Connection
Wiring diagram
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6.1.2 Wiring diagrams – RU200-CP40…
3
1
2
4
+
–
3
1
2
4
+
–
Fig.33: Connection diagram –
RU200-CP40-2UP8…
Fig.34: Connection diagram –
RU200-CP40-2UN8…
+
–
2
1
3
4
analog
I
+
–
2
1
3
4
analog
I
Fig.35: Connection diagram –
RU200-CP40-LIU2P8…
Fig.36: Connection diagram –
RU200-CP40-LIU2N8…