SICK UM18-2 Pro User manual

OPERATING INSTRUCTIONS
UM18-2 Pro
Ultrasonic sensors

2 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
Described product UM18-2 Pro
Manufacturer SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
Legal information
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reserved for SICK AG. Reproduction of this document or parts of this document is
only permissible within the limits of the legal determination of Copyright Law. Any
modication, abridgment or translation of this document is prohibited without the
express written permission of SICK AG.
The trademarks stated in this document are the property of their respective owner.
© SICK AG. All rights reserved.
Original document This document is an original document of SICK AG.

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Table of contents
Table of contents
1 General information........................................................................... 7
1.1 Information regarding the operating instructions....................7
1.2 Explanation of symbols .............................................................7
1.3 Limitation of liability ..................................................................8
1.4 Scope of delivery .......................................................................8
1.5 Customer service.......................................................................8
1.6 EU declaration of conformity.....................................................8
2 Safety.................................................................................................. 9
2.1 Correct use.................................................................................9
2.2 Improper use..............................................................................9
2.3 Requirements for skilled persons and operating personnel 10
3 Identication .................................................................................... 11
3.1 Type label ................................................................................ 11
3.2 Type code ................................................................................ 12
4 Structure and function .................................................................... 13
4.1 Structure and status indicators ............................................. 13
4.2 Function................................................................................... 14
5 Mounting .......................................................................................... 15
5.1 Mounting the ultrasonic sensor............................................. 15
5.2 Smooth object surfaces ......................................................... 15
5.3 Mounting multiple ultrasonic sensors................................... 16
5.3.1 Minimum mounting distances ............................... 16
5.3.2 Synchronization mode ............................................ 16
5.3.3 Multiplex mode ....................................................... 17
6 Electrical connection ..................................................................... 19
6.1 Safety....................................................................................... 19
6.2 Wiring notes ............................................................................ 19
6.3 Connecting the ultrasonic sensor electrically....................... 20
6.4 Connection diagrams ............................................................. 21
6.4.1 Ultrasonic sensors with switching outputs............ 21
6.4.2 Ultrasonic sensors with analog outputs................ 22

Table of contents
4 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
7 Commissioning ................................................................................ 23
7.1 Ultrasonic sensors with switching outputs............................ 23
7.1.1 Teach-in the switching point – method A .............. 23
7.1.2 Teach-in the switching point – method B .............. 23
7.1.3 Teach-in the window ............................................... 24
7.1.4 Teach-in the background........................................ 24
7.1.5 Conguring as normally open or normally closed. 25
7.2 Ultrasonic sensors with an analog output ............................ 25
7.2.1 Conguring the scaling of the analog output ....... 25
7.2.2 Conguring the rising or falling output
characteristic curve ................................................ 26
7.3 Additional settings for all sensor models.............................. 26
7.3.1 Switching between teach-in and synchronization/
multiplex mode ....................................................... 26
7.3.2 Resetting the settings to the factory setting......... 27
7.4 Temperature compensation ................................................... 28
7.5 Measured value lter.............................................................. 29
8 IO-Link interface .............................................................................. 32
8.1 Physical layer .......................................................................... 32
8.2 Process data ........................................................................... 33
8.3 Service data ............................................................................ 33
8.3.1 IO-Link-specic........................................................ 33
8.3.2 SICK-specic UM18-21712A21_ .......................... 34
8.3.3 SICK-specic UM18-21712A21_ .......................... 35
8.3.4 SICK-specic UM18-21212A21_ .......................... 36
8.3.5 SICK-specic UM18-21812A21_ .......................... 37
8.4 Error Codes ............................................................................. 38
9 Cleaning and maintenance ............................................................. 39
9.1 Cleaning .................................................................................. 39
9.2 Maintenance ........................................................................... 39
10 Troubleshooting ............................................................................... 40
10.1 Possible fault indicators......................................................... 40
10.2 Disposal................................................................................... 40

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Table of contents
11 Technical data.................................................................................. 41
11.1 Dimensions ............................................................................. 41
11.2 Optics/Performance ............................................................... 42
11.3 Power supply ........................................................................... 43
11.3.1 Sensors with switching outputs ............................. 43
11.3.2 Sensors with analog outputs ................................. 43
11.4 Inputs....................................................................................... 43
11.5 Outputs.................................................................................... 43
11.5.1 Sensors with switching outputs ............................. 43
11.5.2 Sensors with analog outputs ................................. 44
11.6 Interfaces ................................................................................ 44
11.7 Ambient conditions................................................................. 45
11.8 Structural design .................................................................... 45
11.9 "Detection zone" diagrams..................................................... 46
12 Accessories ...................................................................................... 48
12.1 "Connect+ Adapter" (CPA) ...................................................... 48
13 CongurationOverview ................................................................... 49
13.1 Conguration overview for sensors with switching outputs. 49
13.2 Conguration overview for sensors with analog outputs ..... 49
13.3 Additional settings for all sensors ......................................... 50
Index .......................................................................................................... 51

6 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29

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General information
1 General information
1.1 Information regarding the operating instructions
These operating instructions supplement the Quick start guide and contain
additional information and detailed descriptions for using SICK AG's
UM18-2 Pro ultrasonic sensors. These operating instructions are intended
for specialists and electricians.
1.2 Explanation of symbols
Warnings Warnings in these operating instructions are indicated by symbols.
The warnings are introduced by signal words that indicate the extent of
the danger.
These warnings must be observed at all times and care must be taken to
avoid accidents, personal injury, and material damage.
DANGER!
… indicates a situation of imminent danger, which will
lead to a fatality or serious injuries if not prevented.
WARNING!
… indicates a potentially dangerous situation, which may
lead to a fatality or serious injuries if not prevented.
CAUTION!
… indicates a potentially dangerous situation, which may
lead to minor/slight injuries if not prevented.
IMPORTANT!
… indicates a potentially harmful situation, which may
lead to material damage if not prevented.
Tips and recommendations
NOTE!
… highlights useful tips and recommendations as well as
information for ecient and trouble-free operation.

General information
8 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
1.3 Limitation of liability
Applicable standards and regulations, the latest state of technological
development and many years of knowledge and experience have all been
taken into account when assembling the data and information contained in
these operating instructions.
The manufacturer accepts no liability for damage caused by:
• Failing to observe the operating instructions
• Incorrect use
• Use by untrained personnel
• Unauthorized conversions
• Technical modications
• Use of unauthorized spare parts/wearing parts.
With special variants, where optional extras have been ordered, or owing to
the latest technical changes, the actual delivery may vary from the features
and illustrations shown here.
1.4 Scopeofdelivery
The scope of delivery includes the following:
• UM18-2 Pro ultrasonic sensor
• Optional: Accessories (→ Page 48, Chapter 12).
Supplied documentation:
• Quick start guide
1.5 Customerservice
Do not hesitate to contact our customer service should you require any
technical information.
Please refer to the back page of these operating instructions for your
agent's contact details.
NOTE!
Before calling, make a note of all type label data such as
type code, serial number etc. to ensure faster processing.
1.6 EU declaration of conformity
→ You can download the EU declaration of conformity online from
"www.sick.com/um18".

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Safety
2 Safety
2.1 Correct use
The UM18-2 Pro is an ultrasonic sensor for non-contact detection of
objects, animals, and persons.
SICK AG assumes no liability for losses or damage arising from the use of
the product, either directly or indirectly. This applies in particular to use of
the product that does not conform to its intended purpose and is neither
described nor mentioned in this documentation.
2.2 Improper use
The UM18-2 Pro ultrasonic sensor does not constitute a safety component
according to the EC Machinery Directive (2006/42/EC).
The UM18-2 Pro ultrasonic sensor must not be used in areas having
a danger of explosions.
Any other use that is not described as correct use is prohibited.
Never install or connect accessories if their quantity and composition are
not clearly specied, or if they have not been approved by SICK AG.

Safety
10 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
2.3 Requirements for skilled persons and operating personnel
WARNING
Riskofinjuryduetoinsucienttraining!
Improper handling may result in considerable personal
injury and material damage.
For this reason:
• All activities should always be performed only by
designated persons.
These operating instructions list the training requirements for the various
elds of activity, as follows:
• Skilled personnel
Due to their specialist training, skills, and experience, as well as their
knowledge of the relevant regulations, such persons are able to perform
tasks delegated to them and detect any potential dangers on their own
initiative.
• Electricians
Due to their specialist training, skills, and experience, as well as their
knowledge of the relevant standards and provisions, such persons are
able to perform work on electrical systems and detect any potential
dangers on their own initiative.
In Germany, electricians must meet the specications of the BGV
A3 Work Safety Regulations (e.g. Master Electrician). Other relevant
regulations applicable in other countries must be observed.

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Identication
3 Identication
3.1 Type label
The ultrasonic sensor includes the following type label:
POWERQ
Made in Germany
1
2354
D-79183 Waldkirch
Fig. 1: UM18-2 Pro type label
1 Order number
2 Type designation
3 Information about output
4 Supply voltage
5 Serial number

Identication
12 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
3.2 Type code
UM18–21712A211
1 2 3 4 5 6 7 8 9 10 11 12 13
Position Description
1 to 4 Product family
UM18
5Generation
2 2. Generation
6Principle of operation
1 Scanning principle
7Detection range
7 20 mm … 150 mm, 250 mm
1 30 mm … 250 mm, 350 mm
2 65 mm … 350 mm, 600 mm
8 120 mm … 1000 mm, 1300 mm
8 … 9 Connectionandhousingversion
12 M12 plug, 5-pin, nickel-plated brass without display
10 Output function
A 1x Push-pull switching output
B 2x Push-pull switching output
6 1x Analog output 4 mA ... 20 mA
7 1x Analog output DC 0 V … 10 V
11 IO-Link
2 available
1 not available
12 Performance
1 Pro version
13 Alignment
1 Straight
2 Angled
Table 1: Type code, UM18-2 Pro ultrasonic sensors

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Structure and function
4 Structure and function
4.1 Structure and status indicators
25.5 (1.00)
40.5 (1.59)
4
(0.16)
M18 x 1
2
3
4
All dimensions in mm (inch)
1
56.5 (2.22)
41.5 (1.63)
16
(0.63)
4
(0.16)
M18 x 1 3.4
(0.13)
2
3
4
1
68.5 (2.70)
Fig. 2: Structure: top "UM18-2xxxxxxx1 ultrasonic sensor"
bottom "UM18-2xxxxxxx2 ultrasonic sensor"
1 Connection
2 Mounting nuts, width across 24 mm
3 Supply voltage active LED status indicator (green)
4 Switching/analog output LED status indicator (orange)
Status indicators (LEDs) Status display Description
Green Supply voltage
• Green LED: Supply voltage on
• LED o: Supply voltage o
Orange Switching/analog output
• LED orange: Switching output active/measured value
within analog output scaling
• LED o: Switching output inactive/measured value
outside analog output scaling
Table 2: Status indicators (LEDs)

Structure and function
14 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
4.2 Function
The UM18-2 Pro is an ultrasonic sensor for performing non-contact
distance measurement or detection of objects, animals, and persons.
The circuit variations have the following operation modes: Distance to
Object (DtO), Window (Wnd), and Object between Sensor and Background
(ObSB). The measured distance value is transferred cyclically over an
IO-Link interface.
Depending on the model, the analog versions output a voltage or current
value corresponding to the measured distance value and the scaling on
the customer side.

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Mounting
5 Mounting
5.1 Mounting the ultrasonic sensor
NOTE!
Distance measurement is not possible within the blind
zone of the ultrasonic sensor. → See Page 42,
Chapter 11.2.
NOTE!
→ For mounting accessories, see Internet
"www.sick.com/um18", Accessories.
1. Select the mounting location for the ultrasonic sensor according to
the requirement. Keep in mind the specications in the technical
data, such as the detection range. → For dimensions, see Page 41,
Chapter 11.1. → For detection range, see Page 46, Chapter 11.9.
2. Insert the ultrasonic sensor through the hole in the mounting bracket.
3. Tighten mounting nuts using a maximum torque of 15 Nm.
5.2 Smooth object surfaces
For smooth object surfaces, we recommend an angle of 90° ± 3° between
the sensor axis and the object surface. A larger angle is possible for rough
surfaces.
≤ ± 3° ≥ ± 3°
1
2
Fig. 3: Alignment of the sensor for smooth and rough object surfaces
1 Alignment for smooth object surfaces
2 Alignment for rough object surfaces

Mounting
16 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
5.3 Mounting multiple ultrasonic sensors
5.3.1 Minimum mounting distances
If you would like to operate multiple ultrasonic sensors and the mount-
ing distance is lower than the value specied in Table 3 (page 16), we
recommend using synchronization or multiplex mode. Synchronization or
multiplex mode avoids mutual interference between the sensors.
→ For synchronization mode, see Page 16, Chapter 5.3.2.
→ For multiplex mode, see Page 17, Chapter 5.3.3.
Minimum mounting distances
withoutsynchronizationmodeor
multiplex mode
Ultrasonic sensor Minimum distance for
parallel mounting
Minimumdistancewhen
devicesaremounted
opposite one another
UM18-217x > 250 mm > 1300 mm
UM18-211x > 350 mm > 2500 mm
UM18-212x > 400 mm > 2500 mm
UM18-218x > 700 mm > 4000 mm
Table 3: Minimum mounting distances without synchronization mode or
multiplex mode
5.3.2 Synchronizationmode
NOTE!!
The synchronization mode is not available in IO-Link
mode.
Descriptionofsynchronizationmode Synchronization mode begins automatically as soon as the sensors are
interconnected via PIN 5 (MF).
The sensors measure simultaneously in synchronization mode.
This operating mode prevents unwanted mutual interference since
measurements from dierent times are not incorrectly compared with one
another. The sensors can therefore be mounted without taking into account
mounting distances.
The acoustic pulses of a sensor deected by an object can still be analyzed
by neighboring sensors. This makes it possible to implement more reliable
and simultaneous monitoring of large areas with synchronization mode, but
without position detection of the recorded objects.
The detection zone is enlarged to a size which covers all synchronized
sensors. A maximum of 20 sensors of type UM18-2 Pro can be connected,
and they can also be combined with synchronizable SICK ultrasonic
sensors from other product families.
The response time of the overall system is determined by the sensor with
the highest response time.

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Mounting
Synchronizationmodestructureand
operating principle
t
PIN 5
Fig. 4: Synchronization mode
5.3.3 Multiplex mode
NOTE!!
The multipex mode is not available in IO-Link mode.
Description of multiplex mode To change to multiplex mode, sensors must be interconnected via
PIN 5 (MF) and dierent addresses must be assigned to them using the
Connect+ software.
In multiplex mode, all sensors measure in alternation in a dened
sequence. This operating mode prevents unwanted mutual interference
since measurements from dierent times cannot be incorrectly compared
with one another. The sensors can therefore be mounted without taking
into account mounting distances.
Thanks to alternating measurement, the monitoring of large areas is
possible with additional position detection of recorded objects.
The detection zone is enlarged to a size which covers all connected
sensors. A maximum of 20 sensors of type UM18-2 Pro can be connected,
and they can also be combined with synchronizable SICK ultrasonic
sensors from other product families.
Since measurement by the sensors is done in alternation, the response
time of the total system is increased in accordance with the “overall
response time” formula.
NOTE!
For multiplex mode, you must assign a unique address to
the sensors. The "Connect + Adapter" and the associated
software is required for this (order no. 6037782)

Mounting
18 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
Overallresponsetime Response timeoverall = 4 • [(1.1 ms • n) + 0.75 ms • (1 + 2 + … + n)] +
sum of the response times of all connected sensors
n: Number of connected sensors
Multiplex mode structure and operat-
ing principle
t
PIN 5
Fig. 5: Multiplex mode

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Electrical connection
6 Electrical connection
6.1 Safety
Incorrectsupplyvoltage
IMPORTANT!
Equipmentdamageduetoincorrectsupplyvoltage!
An incorrect supply voltage may result in damage to
the equipment.
For this reason:
• Operate the ultrasonic sensor using only a protected
low voltage and safe electrical insulation as per
Protection Class III.
Workingwithliveparts
IMPORTANT!
Equipment damage or unpredictable operation due to
workingwithliveparts!
Working with live parts may result in unpredictable
operation.
For this reason:
• Carry out wiring work only when the power is o.
• Connect and disconnect cable connections only when
the power is o.
6.2 Wiring notes
IMPORTANT!
Faultsduetoincorrectwiring!
Incorrect wiring may result in operational faults.
For this reason:
• Follow the wiring notes precisely.
NOTE!
We recommend using preassembled cables for
the wiring. → For preassembled cables, see Internet
"www.sick.com/um18", Accessories.

Electrical connection
20 © SICK AG • Subject to change without notice • 8014865/ZUJ3/2018-11-29
All electrical connections of the ultrasonic sensor are congured as M12
round connectors.
The IP 67 protection class is only achieved using screwed plug connectors
or cover caps.
By using suitable cable entries and wiring, you can avoid interference
from devices such as switching power supplies, motors, clocked drives,
and contactors.
• Lay cables as far away as possible from cables having a high level of
radiated emission. If needed, employ additional measures such as
shielding plates.
• Do not lay cables parallel to other cables, particularly devices with a high
level of radiated emission, such as frequency converters.
• Do not lay cables parallel to energy cables.
6.3 Connecting the ultrasonic sensor electrically
1. Ensure that there is no voltage.
2. Connect the ultrasonic sensor according to the connection diagram.
→ See Page 21, Chapter 6.4.