Wenglor OPT2151 User manual

Operating Instructions
EN
OPT2151
OPT2152
Reflex Sensors with Background Suppression
Translation of the Original Operating Instruction
Subject to change without notice
Available as PDF version only
Version: 1.0.0
Status: 01.02.2021
www.wenglor.com

2
Table of Contents
1. General ...................................................................................................................................3
1.1 Information Concerning these Instructions ............................................................................................. 3
1.2 Explanations of Symbols ......................................................................................................................... 3
1.3 Limitation of Liability................................................................................................................................. 4
1.4 Copyrights................................................................................................................................................ 4
2. For Your Safety.......................................................................................................................5
2.1 Use for Intended Purpose........................................................................................................................ 5
2.2 Use for Other than the Intended Purpose................................................................................................ 5
2.3 Personnel Qualifications .......................................................................................................................... 6
2.4 Modification of Products ......................................................................................................................... 6
2.5 General Safety Precautions ..................................................................................................................... 6
2.6 Laser/LED Warnings................................................................................................................................. 6
2.7 Approvals and protection class ............................................................................................................... 6
3. Technical Data ........................................................................................................................7
3.1 Spot Diameter .......................................................................................................................................... 8
3.2 Switching Distance Deviation...................................................................................................................8
3.3 Layout....................................................................................................................................................... 9
3.4 Control Panel............................................................................................................................................ 9
3.5 Scope of Delivery ................................................................................................................................... 10
4. Transport and Storage .........................................................................................................10
4.1 Transport ................................................................................................................................................ 10
4.2 Storage................................................................................................................................................... 10
5. Installation and Electrical Connection................................................................................11
5.1 Installation .............................................................................................................................................. 11
5.2 Electrical Connection ............................................................................................................................. 12
5.3 Diagnostics............................................................................................................................................. 13
6. Settings.................................................................................................................................14
6.1 Object Detection Directly in Front of a Background or an Undersurface ............................................. 14
6.2 Detection of Objects Without Interfering Background........................................................................... 14
7. IO-Link ..................................................................................................................................14
8. Maintenance Instructions ....................................................................................................15
9. Proper Disposal ...................................................................................................................15
10. Appendix...............................................................................................................................15
10.1 List of Abbreviations............................................................................................................................. 15
10.2 Change Index, Operating Instructions................................................................................................. 15
10.3 EU Declaration of Conformity .............................................................................................................. 15
Table of Contents

3
Reflex Sensors with Background Suppression
1. General
1.1 Information Concerning these Instructions
• These instructions apply to the products with ID codes OPT2151 and OPT252.
• They make it possible to use the product safely and efficiently.
• These instructions are an integral part of the product and must be kept on hand for the entire duration of
its service life.
• Local accident prevention regulations and national work safety regulations must be complied with as well.
• The product is subject to further technical development, and thus the information contained in
these operating instructions may also be subject to change. The current version can be found at
www.automationdirect.com in the product’s separate download area.
NOTE!
The operating instructions must be read carefully before using the product and must be kept
on hand for later reference.
1.2 Explanations of Symbols
• Safety precautions and warnings are emphasized by means of symbols and attention-getting words
• Safe use of the product is only possible if these safety precautions and warnings are adhered to
The safety precautions and warnings are laid out in accordance with the following principle:
Attention-Getting Word!
Type and Source of Danger!
Possible consequences in the event that the hazard is disregarded.
• Measures for averting the hazard.
The meanings of the attention-getting words, as well as the scope of the associated hazards, are listed below.
DANGER!
This word indicates a hazard with a high degree of risk which, if not avoided, results in death
or severe injury.
WARNING!
This word indicates a hazard with a medium degree of risk which, if not avoided, may result
in death or severe injury.
CAUTION!
This word indicates a hazard with a low degree of risk which, if not avoided, may result in
minor or moderate injury.
ATTENTION!
This word draws attention to a potentially hazardous situation which, if not avoided, may
result in property damage.
NOTE!
A note draws attention to useful tips and suggestions, as well as information regarding
efficient, error-free use.

4General
1.3 Limitation of Liability
• The product has been developed in consideration of the current state-of-the-art and applicable standards
and guidelines. Subject to change without notice.
• A valid declaration of conformity can be accessed at www.automationdirect.com in the product’s separate
download area.
• wenglor sensoric elektronische Geräte GmbH (hereinafter referred to as “wenglor”) excludes all liability in
the event of:
• Non-compliance with the instructions
• Use of the product for purposes other than those intended
• Use by untrained personnel
• Use of unapproved replacement parts
• Unapproved modification of products
• These operating instructions do not include any guarantees from wenglor with regard to the described
procedures or specific product characteristics.
• wenglor assumes no liability for printing errors or other inaccuracies contained in these operating
instructions, unless wenglor was verifiably aware of such errors at the point in time at which the operating
instructions were prepared.
1.4 Copyrights
• The contents of these instructions are protected by copyright law.
• All rights are reserved by wenglor.
• Commercial reproduction or any other commercial use of the provided content and information, in
particular graphics and images, is not permitted without previous written consent from wenglor.

5
Reflex Sensors with Background Suppression
2. For Your Safety
2.1 Use for Intended Purpose
The product is based on the following functional principle:
Reflex Sensors with Background Suppression
Reflex sensors with background suppression analyze the light reflected from objects. As these sensors work
according to the principle of angular measurement, the color, shape and surface characteristics of the object
have almost no influence on the detection range. Even dark objects can be reliably detected against a bright
background. The output is switched as soon as an object passes the selected range.
This product can be used in the following industry sectors:
• Special machinery manufacturing
• Heavy machinery manufacturing
• Logistics
• Automotive industry
• Food industry
• Packaging industry
• Pharmaceuticals industry
• Plastics industry
• Woodworking industry
• Consumer goods industry
• Paper industry
• Electronics industry
• Glass industry
• Steel industry
• Aviation industry
• Chemicals industry
• Alternative energy
• Raw materials extraction
2.2 Use for Other than the Intended Purpose
• Not a safety component in accordance with 2006/42/EC (Machinery Directive)
• The product is not suitable for use in potentially explosive atmospheres.
• The product may only be used with accessories supplied or approved by wenglor, or combined with
approved products. A list of approved accessories and combination products can be accessed at
www.automationdirect.com on the product detail page.
DANGER!
Risk of personal injury or property damage in case of use for other than the intended
purpose!
Use for other than the intended purpose may lead to hazardous situations.
• Observe instructions regarding use for intended purpose.

6For Your Safety
2.3 Personnel Qualifications
• Suitable technical training is a prerequisite.
• In-house electronics training is required.
• Trained personnel must have uninterrupted access to the operating instructions.
DANGER!
Risk of personal injury or property damage in case of incorrect initial start-up and
maintenance!
Personal injury and damage to equipment may occur.
• Adequate training and qualification of personnel.
2.4 Modification of Products
DANGER!
Risk of personal injury or property damage if the product is modified!
Personal injury and damage to equipment may occur. Non-observance may result in loss of
the CE marking and the guarantee may be rendered null and void.
• Modification of the product is impermissible.
2.5 General Safety Precautions
NOTE!
• These instructions are an integral part of the product and must be kept on hand for the
entire duration of its service life.
• In the event of possible changes, the respectively current version of the operating
instructions can be accessed at www.automationdirect.com in the product’s download
area.
• Read the operating instructions carefully before using the product.
• Protect the sensor against contamination and mechanical influences.
2.6 Laser/LED Warnings
The respective laser class or LED group is listed in the product’s technical data.
LASER CLASS 1
EN 60825-1:2014
Laser Class 1 (EN 60825-1)
Applicable standards and safety regulations must be observed.
Pp = 7 mW, t = 8 s, λ= 680 nm
2.7 Approvals and protection class
RoHS

7
Reflex Sensors with Background Suppression
3. Technical Data
Optical Data
Service life (ambient temp. = +25 °C) 100000 h
Max. permissible ambient light 10000 Lux
Electrical Data
Supply power 15…30 V DC
IO-Link supply voltage 18…30 V DC
Switching output voltage drop < 2 V
Switching output switching current 100 mA
Switching output residual current < 50 µA
Short-circuit protection Yes
Reverse polarity protected Yes
Overload-proof Yes
Lockable Yes
Interface IO-Link
IO-Link version 1.1
Protection class III
Mechanical Data
Setting method Potentiometer
Housing material Plastic
Degree of protection IP67 / IP68
Lens cover PMMA
Order Number
Technical Data OPT2151 OPT2152
Principle Electronic background suppression
Range 400 mm
Adjustable Range 50...400 mm
Switching hysteresis < 3 %
Temperature range –40…60 °C
Temperature drift < 5 %
Current consumption < 20 mA
Light Source Blue light
Laser Class (EN 60825-1) —
Risk Group (EN 62471) 1
Spot Diameter See table 1
Switching frequency 800 Hz
Response time 1,25 ms
Switching frequency
(Interference-free-Mode) 500 Hz
Response time
(Interference-free-Mode) 1,5 ms
Output
function
PNP, antivalent ×
NPN, antivalent ×
Connection Plug M12, 4-pin
Connection diagram No. 215 213

8Technical Data
3.1 Spot Diameter
Range 50 mm 200 mm 400 mm
Spot diameter 11 mm 13 mm 14 mm
Table 1
3.2 Switching Distance Deviation
Typical characteristic curve based on Kodak white (90 % remission).
OPT2151, OPT2152:
P1PH
10050 150 200 250 300350
400
-30
-25
-20
-15
-10
-5
0
Sr/mm
dSr/mm
Sr = Switching Distance
dSr = Switching Distance Change
Black 6 % remission
Grey 18 % remission

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Reflex Sensors with Background Suppression
3.3 Layout
OPT2151, OPT2152
= Emitter diode
= Receiving diode
Screw M4 = 0,5 Nm
Potentiometer = 40 Nmm
Dimensions specified in mm
(1 mm = 0,03937 Inch)
3.4 Control Panel
68
05
A32
30
05 = switching distance adjuster
30 = switching status indicator / contamination warning
68 = supply power indicator

10 Transport and Storage
3.5 Scope of Delivery
• Sensor
• Safety precautions
• Mounting Set 14
• Spacer sleeves Z1PE002
4. Transport and Storage
4.1 Transport
Upon receipt of shipment, the goods must be inspected for damage in transit. In the case of damage, con-
ditionally accept the package and notify the manufacturer of the damage. Then return the device, making
reference to damage in transit.
4.2 Storage
The following points must be taken into condition with regard to storage:
• Do not store the product outdoors.
• Store the product in a dry, dust-free place.
• Protect the product against mechanical impacts.
• Protect the product against exposure to direct sunlight.
ATTENTION!
Risk of property damage in case of improper storage!
The product may be damaged.
• Storage instructions must be complied with.

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Reflex Sensors with Background Suppression
5. Installation and Electrical Connection
5.1 Installation
• Protect the product from contamination during installation.
• Observe all applicable electrical and mechanical regulations, standards, and safety rules.
• Protect the product against mechanical influences.
• Make sure that the sensor is mounted in a mechanically secure fashion.
• Specified torque values must be complied with (see section “3. Technical Data”, page 7).
ATTENTION!
Risk of property damage in case of improper installation!
The product may be damaged.
• Installation instructions must be complied with.
CAUTION!
Risk of personal injury or property damage during installation!
Personal injury and damage to the product may occur.
• A safe installation environment must be assured.

12 Installation and Electrical Connection
5.2 Electrical Connection
213 215
Legend
Wire Colors according to IEC 60757
Platinum measuring resistor
not connected
Test Input
Test Input inverted
Trigger Input
Ground for the Trigger Input
Analog Output
Ground for the Analog Output
Block Discharge
Valve Output
Valve Control Output +
Valve Control Output 0 V
Synchronization
Ground for the Synchronization
Receiver-Line
Emitter-Line
Grounding
Switching Distance Reduction
Ethernet Receive Path
Ethernet Send Path
Interfaces-Bus A(+)/B(–)
Emitted Light disengageable
Magnet activation
Input confirmation
Contactor Monitoring
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Grey
White
Pink
Green/Yellow
Supply Voltage +
Supply Voltage 0 V
Supply Voltage (AC Voltage)
Switching Output (NO)
Switching Output (NC)
Contamination/Error Output (NO)
Contamination/Error Output (NC)
Input (analog or digital)
Teach Input
Time Delay (activation)
Shielding
Interface Receive Path
Interface Send Path
Ready
Ground
Clock
Output/Input programmable
Power over Ethernet
Safety Input
Safety Output
Signal Output
Ethernet Gigabit bidirect. data line (A-D)
Encoder 0-pulse 0-0 (TTL)
Encoder A/A (TTL)
Encoder B/B (TTL)
Encoder A
Encoder B
Digital output MIN
Digital output MAX
Digital output OK
Synchronization In
Synchronization OUT
Brightness output
Maintenance
reserved
PT
PT
DANGER!
Risk of personal injury or property damage due to electric current!
Voltage conducting parts may cause personal injury or damage to equipment.
• The electric device may only be connected by appropriately qualified personnel.

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Reflex Sensors with Background Suppression
5.3 Diagnostics
Causes for Triggering the Contamination Warning (blinking LED):
Display LED Diagnosis/Cause Elimination
Continuous blinking
at approx. 2.5 Hz
Contamination Carefully clean the optic cover with a cloth.
Aged emitter diode Replace the sensor.
Unreliable working range • Increase the sensor’s switching distance.
• Reduce distance between sensor and object.
Continuous blinking
at approx. 5 Hz
Short-circuit Check electrical wiring and eliminate the short-circuit.
Over-temperature Disconnect the sensor from supply power
and allow it to cool down.
Hardware error Replace the sensor.
Contamination Warning Flowcharts
not detected not detecteddetected
beginning contamination
Object Object Object
not detected not detecteddetected
Reflex Mode no contamination
Object Object Object
Object
Switching Status
Indicator
Object
Switching Status
Indicator
Object
Switching Status
Indicator
not detected not detectednot detected
advanced contamination
Object Object Object
off offon
off off
off off
blinking
off

14 Settings
Required action in case of fault:
NOTE!
• Shut down the machine.
• Analyze and eliminate the cause of error with the help of the diagnostics information.
• If the error cannot be eliminated, please contact AutomationDirect’s support department.
• Do not operate in case of indeterminate malfunctioning.
• The machine must be shut down if the error cannot be unequivocally clarified or reliably
eliminated.
DANGER!
Risk of personal injury or property damage in case of non-compliance!
The system’s safety function is disabled. Personal injury and damage to equipment.
• Required action as specified in case of fault.
6. Settings
6.1 Object Detection Directly in Front of a Background or an Undersurface
• Adjust and securely mount the sensor such that the spot strikes the object to be detected at a right angle.
• Turn the potentiometer all the way to the right.
• Remove the object and slowly turn the potentiometer back until the output is switched. The background or
the undersurface is now suppressed.
• Put the object back under the spot and check to determine whether or not the sensor is activated again.
6.2 Detection of Objects Without Interfering Background
• Adjust and securely mount the sensor such that the spot strikes the object to be detected.
• Turn the potentiometer all the way to the left.
• Turn up the potentiometer up until activation occurs and, if required, turn it up a bit further for increased
switching reliability.
7. IO-Link
Further settings are possible via the IO-Link interface. The IODD can be found at www.automationdirect.com
in the product’s download area.

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Reflex Sensors with Background Suppression
8. Maintenance Instructions
NOTE!
• This wenglor sensor is maintenance-free.
• Cleaning and inspection of the plug connections at regular intervals are advisable.
• Do not clean the sensor with solvents or cleansers which could damage the product.
• The product must be protected against contamination during initial start-up.
9. Proper Disposal
wenglor sensoric GmbH does not accept the return of unusable or irreparable products. Respectively valid
national waste disposal regulations apply to product disposal.
10.Appendix
10.1 List of Abbreviations
Abbreviation Meaning
Tu Ambient temperature
Ub Supply voltage
IODD IO Device Description
MTTFd Mean Time to Dangerous Failure
10.2 Change Index, Operating Instructions
Version Date Description/Change
1.0.0 16.11.20 Initial version of the operating instructions
10.3 EU Declaration of Conformity
The EU declaration of conformity can be found on our website at www.automationdirect.com in the product’s
download area.