SICK Fork Sensors Registration sensors Product information

FORK SENSORS

SIMPLICITY, FLEXIBILITY, AND PRECISION –

COMBINED IN A SINGLE FORK SENSOR

Registration sensors

PRODUKTINFORMATION

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Hitting the mark without the need for extensive preparation is the very denition

of precision. What makes fork sensors from SICK really stand out, however, is

more than just their accuracy – it’s also their outstanding equipment congura-

tion. The sender and receiver are integrated into a single housing, saving time

spent on alignment.

Sensors that operate using a through-beam design always require a certain amount of adjustment and

alignment. That is, unless the sender and receiver are both integrated into a rugged housing made of

plastic or aluminum – as is the case with SICK fork sensors. With their precise, focused beam of light, the

infrared, red light, laser, and ultrasonic variants that are available offer a key advantage when it comes to

reliable detection of labels, double sheets, and various types of objects. These sensors are even able to

detect very slight differences in light attenuation. A wide range of fork sizes, straightforward mounting, and

exceptionally high ambient light immunity are additional advantages that the fork sensors offer.

SIMPLICITY, FLEXIBILITY, AND PRECISION –

COMBINED IN A SINGLE FORK SENSOR

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Advantages at a glance

• Quick and easy mounting as the sender and

receiver are integrated into one housing

• Numerous fork sizes and detection prin-

ciples (infrared LED, red light LED, laser,

and ultrasonic) to accommodate all kinds of

applications

• Reliable performance at high speeds thanks

to high switching frequency

• High ambient light immunity provides a high

level of operational safety

• Rugged aluminum housing for use in harsh

industrial environments

SIMPLICITY, FLEXIBILITY, AND PRECISION –

COMBINED IN A SINGLE FORK SENSOR

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TEACH-IN PROCEDURES

TWO OPERATING CONCEPTS FOR INCREASED FLEXIBILITY

Various procedures are available for carrying out teach-in conguration of fork sensors. In addition to stat-

ic 2-point teach-in, a dynamic teach-in procedure is available for selection. This exibility is also reected

in the operating concept used when performing the teach-in procedure.

Operating concept with plus/minus buttons

• Static and dynamic teach-in procedure available

• Option of individual switching threshold readjustment using

plus/minus buttons

• Option of changing between light/dark switching

• Pushbutton lock can be activated and deactivated

Operating concept with teach-in button

• Standardized design

• Intuitive operating concept

• Static and dynamic teach-in procedure available

• Option of single-stage ne adjustment using teach-in button

• Option of changing between light/dark switching

• Pushbutton lock can be activated and deactivated

In addition to the proven variants that enable settings to be

made using plus/minus buttons, the teach-in button variants

provide the option of performing the teach-in procedure using

just one button. This means that SICK offers its customers

the advantage of an intuitive sensor that is equipped with one

and the same operating concept across all product variants.

Thanks to an IO-Link interface installed as standard and

optional smart automation functions, SICK fork sensors are

equipped for the long term, ready to face the requirements of

the future – and combine standard sensors with pioneering

sensor intelligence in order to do so.

The two operating concepts at a glance

*

* With the exception of UFN.

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PRINCIPLES OF OPERATION

TWO FUNCTIONAL PRINCIPLES ACHIEVE THE DESIRED RESULT

Switching output Q = dark switching

The switching output is active when the path of the beam

is interrupted; that is, an object is located in the path of

the beam.

Switching output Q = light switching

The switching output is active when there is no object in

the path of the beam.

Switching function

Active

Switching output Q Not active

Switching output Q

Active

Not active

In label recognition, this means:

The switching output is active when the label is present.

In label recognition, this means:

The switching output is active when the label is not

present.

Ultrasonic fork sensors

In this case, it is the material properties (such as thickness

and adhesion) that are evaluated and reliably detected, rather

than the transparency. Thicker materials absorb the sen-

sor’s ultrasonic properties more strongly than thin materials.

Transparent materials are detected regardless of their printed

design or color.

Fields of application

• Label detection

• Double sheet detection

• Adhesive surface detection

Optical fork sensors

Optical fork sensors detect objects via the interruption of the

light beam. Even slight differences in light attenuation are

detected reliably in this way.

Fields of application

• Label detection

• Counting and positioning objects

• Process control

There are two different principles of operation used in SICK fork sensors.

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LABEL OR DOUBLE SHEET DETECTION

• Ultrasonic transmission source

• Detection of transparent, opaque, or printed labels

• Simple and precise setting of the switching threshold via

teach-in button or plus/minus buttons

• Not affected by metalized colors

• Response time of 250 μs

UFN – The clear choice for detecting transparent labels

Transparent, shiny, and metallic labels; white, opaque, and colored substrate; thin foils, foil on foil, paper on paper – modern

labeling machines are faced with a variety of materials and surface properties. SICK fork sensors always offer the right solution.

Optical fork sensors are able to detect opaque labels, for example, reliably. Ultrasonic fork sensors detect even transparent mate-

rials reliably, regardless of their printing design.

TYPICAL APPLICATIONS

• Infrared transmission source

• Optimized housing thanks to slim fork shape

• Simple and precise setting of the switching threshold via

IO-Link, teach-in button, or plus/minus buttons

• Smart sensor with integrated IO-Link interface

WFS – Agile and exible, enabling ideal mounting in label

detection applications

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OBJECT DETECTION

In order to control various processes logistically, it is necessary to reliably detect certain objects on the conveyor belts. As soon

as an object passes the fork sensor, it is detected. Thanks to a whole host of different transmission sources and sizes, the right

fork sensor can always be found to suit every requirement. The design accommodates the sender and receiver in a single hous-

ing. Commissioning is as easy as the mounting process is quick, since no complex, time-consuming alignment is needed.

TYPICAL APPLICATIONS

• Infrared transmission source

• Simple and precise setting of the switching threshold via

IO-Link, teach-in button, or plus/minus buttons

• Fast response time (max. 100 µs)

• Smart sensor with integrated IO-Link interface

WFN – The all-round solution for high-speed applications

• Very precise laser (Class 1)

• Simple and precise setting of the switching threshold via

IO-Link, teach-in button, or plus/minus buttons

• Minimum detectable object size of just 0.05 mm

• Smart sensor with integrated IO-Link interface

WFL – For the smallest of parts and precise positioning

• Clearly visible red emitted light

• No setup required, immediately operational

• Receive indicator, visible from any direction

• Rugged aluminum housing with IP 67 enclosure rating

WFM – connect and go

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SICK sensors with IO-Link functions that can be integrated into an automation system offer a whole host

of useful functions, from conguration and operation all the way through to monitoring.

Condition monitoring/diagnostics

Implementing diagnostic and self-test options enables

features such as contamination evaluation for sensors.

Thanks to the monitoring capabilities of the sensors, pre-

ventive maintenance can be carried out using a precise

maintenance plan. This ability to predict machine status

even extends across area boundaries. The advantages of

this are reduced maintenance and repair times, minimum

risk of failure, as well as accurate fault localization and

diagnostics.

The automation system provides the IO-Link sensor with

optimum application-specic parameters for the manu-

facturing process or the product being manufactured,

such as the sensing distance, hysteresis, or threshold.

The advantages of this are reduced machine downtimes

and changeover times when switching products, more ma-

chine exibility, and the prevention of incorrect settings.

Flexible sensor adjustment

Easy device replacement

Sensors with IO-Link can be replaced quickly and easily

as they are able to adopt the set function parameters

without any alterations. The parameters are stored in the

IO-Link master or in the control system. The advantages

of this are minimal downtimes, guaranteed machine avail-

ability, as well as recorded and documented replacement

processes.

IO-Link enables electronic documentation to be created

for all sensors in the as-delivered state of the machine

or plant, both quickly and automatically. The advantages

of this are increased transparency in the electronic

documentation for installed sensors, cables, and male

connectors. This prevents time-consuming troubleshoot-

ing resulting from different documentation versions.

Additionally, the machine or plant’s as-delivered state can

be documented easily and accurately in this way.

E-parts list/E-inventory

Sensor data such as the device ID, serial number, teach-in

values, hysteresis, and switching behavior can be displayed

and modied using visualization software via the SiLink Box

on the PC. All parameters can be optimized and transferred to

multiple sensors.

The advantages of this are:

• Comprehensive diagnostics options

• Availability values can be checked and parameters can be

optimized

• Simplied selection of function range and performance

capability

• Quick and safe sensor pre-conguration

• Easy identication of optimized application parameters

• Simple commissioning

Sensor visualization

SMART SENSOR SOLUTIONS – STANDARD FUNCTIONS WITH IO-LINK

OPTIMIZED AUTOMATION FOR MACHINES AND PLANTS

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Remote debouncing

For some plants and machines, main-

taining productivity levels requires

sensors to know which detection signals

are disturbances, and to suppress those

disturbances using additional detection

information. This prevents the control

system from being burdened with infor-

mation that will disrupt the process. The

-A70 and -A71 fork sensor variants are

equipped with this function.

You will nd detailed information on Smart Sensor Solutions powered by IO-Link in

the special information with the same name (part number 8011727).

SMART SENSOR SOLUTIONS – ADVANCED FUNCTIONS WITH IO-LINK

By using state-of-the-art sensor technology and integrating it into an automation network, it is possible to

take advantage of innovative functions that have a direct impact on a plant or machine’s productivity.

High-speed counters

Some plants and machines have to

know how fast conveying equipment

is moving in order to carry out control

tasks, or they need to ensure that the

speed of a roller stays within dened

limits. Using the counting function in the

-A71 fork sensor variants, it is possible

to implement these and other automa-

tion tasks with maximum efciency.

Time measurement

In some plants and machines, it is

necessary to check that an object being

transported to another destination is the

right shape or in the right position on

the conveying equipment. The -A70 fork

sensor variant measures the time win-

dow directly and with high precision, and

provides the measurement result in the

format required by the control system

so that this information can undergo

further processing.

Part number Type High-speed counters Time measurement Remote debouncing Page

6058645 WFL50-40B41CA70 - 44

6058646 WFL50 -40B41CA71

- 44

6058615 WF2- 40B41CA70

- 31

6058616 WF2- 40B41CA71

- 31

6058617 WF30-40B41CA70

- 32

6058619 WF30-40B41CA71

- 32

6059834 WF50- 40B41CA71

- 32

6059993 WF50-60B41CA70

- 32

6059994 WF50 - 60B41CA71

- 32

6058650 WFS3-40B41CA70

- 23

6058651 WFS3-40B41CA71

- 23

Other fork variants including automation functions are available on request.

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FORK SENSORS

PRODUCT FAMILY OVERVIEW

UFnext WFS WFnext WFL WFM

The clear choice for detecting

transparent labels

Precise detection for optimum

label detection

The specialist for high-speed

applications

The perfect sensor for the detection of very

small parts and precise positioning

Plug-and-play fork sensors –

connect and get started

Technical data overview

Functional principle Ultrasonic detection principle Optical detection principle

Optical detection principle Optical detection principle Optical detection principle

Fork width 3 mm 3 mm 2 mm ... 120 mm 2 mm ... 120 mm 30 mm ... 180 mm

Fork depth 69 mm 42 mm 42 mm ... 95 mm 42 mm ... 95 mm 42 mm ... 124 mm

MDO Gap between labels: 2 mm

Size of labels: 2 mm

Gap between labels: 2 mm

Size of labels: 2 mm

0.2 mm 0.05 mm 0.8 mm

1 mm

Light source – LED, Infrared light LED, Infrared light Laser, visible red light LED, visible red light

Switching frequency 1.5 kHz 10 kHz / 15 kHz 10 kHz / 15 kHz 10 kHz / 11 kHz 4 kHz

Response time 250 µs 46 µs / 50 µs 46 µs / 100 µs 60 µs / 100 µs 125 µs

Output function Light/darkswitching, selectable via button Light/darkswitching, selectable via button Light/darkswitching, selectable via button Light/darkswitching, selectable via button Dark switching / Light switching

Connection type Connector M8, 4-pin Connector M8, 4-pin

Cable, 4-wire 2 m

Connector M8, 4-pin Connector M8, 4-pin Connector M8, 3-pin

Cable, 3-wire 2 m

IO-Link –

l / –

l / – l / –

–

IO-Link Funktionen – Standard

Advanced

Standard

Advanced

Standard

Advanced

–

Advanced Funktionen – Time measurement + decentralized

debouncing / High speed counter +

decentralized debouncing

(depending on type)

Time measurement + decentralized

debouncing / High speed counter +

decentralized debouncing

(depending on type)

Time measurement + decentralized

debouncing / High speed counter +

decentralized debouncing

(depending on type)

–

At a glance

• Detection of transparent, opaque or printed

labels

• Unaffected by metallic foils and labels

• Fast response time of 250 µs

• Simple and accurate adjustment via teach-

in button, or plus/minus buttons

• Rugged, IP 65 aluminum housing

• Housing with slim forked shape

• Simple and precise setting of the switching

threshold via IO-Link, teach-in button, or

plus/minus buttons

• Light/dark switching function

• Fast response time: 50 μs

• PNP or NPN switching output

• Plastic housing with IP 65 enclosure rating

• Smart sensor with integrated IO-Link inter-

face

• Infrared light source

• Simple and precise setting of the

switching threshold via IO-Link,

teach-in button, or plus/minus but-

tons

• Fast response time: 100 μs

• PNP and NPN switching output

• Light/dark switching function

• Stable aluminum housing with IP 65

enclosure rating

• Smart sensor with integrated IO-Link

interface

• Very precise Class 1 laser

• Simple and precise setting of the

switching threshold via IO-Link,

teach-in button, or plus/minus but-

tons

• Fast response time: 100 μs

• PNP and NPN switching output

• Light/dark switching function

• Stable aluminum housing with IP 65

enclosure rating

• Smart sensor with integrated IO-Link

interface

• Clearly visible red emitted light

• No setup required: The sensor is

ready for operation immediately

• Receive indicator, visible all-round

• 5 fork sizes with a maximum depth

of 120 mm and a maximum width of

180 mm

• Stable aluminum housing with IP 67

enclosure rating

Detailed information

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Registration sensors

FORK SENSORS

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FORK SENSORS

PRODUCT FAMILY OVERVIEW

UFnext WFS WFnext WFL WFM

The clear choice for detecting

transparent labels

Precise detection for optimum

label detection

The specialist for high-speed

applications

The perfect sensor for the detection of very

small parts and precise positioning

Plug-and-play fork sensors –

connect and get started

Technical data overview

Functional principle Ultrasonic detection principle Optical detection principle

Optical detection principle Optical detection principle Optical detection principle

Fork width 3 mm 3 mm 2 mm ... 120 mm 2 mm ... 120 mm 30 mm ... 180 mm

Fork depth 69 mm 42 mm 42 mm ... 95 mm 42 mm ... 95 mm 42 mm ... 124 mm

MDO Gap between labels: 2 mm

Size of labels: 2 mm

Gap between labels: 2 mm

Size of labels: 2 mm

0.2 mm 0.05 mm 0.8 mm

1 mm

Light source – LED, Infrared light LED, Infrared light Laser, visible red light LED, visible red light

Switching frequency 1.5 kHz 10 kHz / 15 kHz 10 kHz / 15 kHz 10 kHz / 11 kHz 4 kHz

Response time 250 µs 46 µs / 50 µs 46 µs / 100 µs 60 µs / 100 µs 125 µs

Output function Light/darkswitching, selectable via button Light/darkswitching, selectable via button Light/darkswitching, selectable via button Light/darkswitching, selectable via button Dark switching / Light switching

Connection type Connector M8, 4-pin Connector M8, 4-pin

Cable, 4-wire 2 m

Connector M8, 4-pin Connector M8, 4-pin Connector M8, 3-pin

Cable, 3-wire 2 m

IO-Link –

l / –

l / – l / –

–

IO-Link Funktionen – Standard

Advanced

Standard

Advanced

Standard

Advanced

–

Advanced Funktionen – Time measurement + decentralized

debouncing / High speed counter +

decentralized debouncing

(depending on type)

Time measurement + decentralized

debouncing / High speed counter +

decentralized debouncing

(depending on type)

Time measurement + decentralized

debouncing / High speed counter +

decentralized debouncing

(depending on type)

–

At a glance

• Detection of transparent, opaque or printed

labels

• Unaffected by metallic foils and labels

• Fast response time of 250 µs

• Simple and accurate adjustment via teach-

in button, or plus/minus buttons

• Rugged, IP 65 aluminum housing

• Housing with slim forked shape

• Simple and precise setting of the switching

threshold via IO-Link, teach-in button, or

plus/minus buttons

• Light/dark switching function

• Fast response time: 50 μs

• PNP or NPN switching output

• Plastic housing with IP 65 enclosure rating

• Smart sensor with integrated IO-Link inter-

face

• Infrared light source

• Simple and precise setting of the

switching threshold via IO-Link,

teach-in button, or plus/minus but-

tons

• Fast response time: 100 μs

• PNP and NPN switching output

• Light/dark switching function

• Stable aluminum housing with IP 65

enclosure rating

• Smart sensor with integrated IO-Link

interface

• Very precise Class 1 laser

• Simple and precise setting of the

switching threshold via IO-Link,

teach-in button, or plus/minus but-

tons

• Fast response time: 100 μs

• PNP and NPN switching output

• Light/dark switching function

• Stable aluminum housing with IP 65

enclosure rating

• Smart sensor with integrated IO-Link

interface

• Clearly visible red emitted light

• No setup required: The sensor is

ready for operation immediately

• Receive indicator, visible all-round

• 5 fork sizes with a maximum depth

of 120 mm and a maximum width of

180 mm

• Stable aluminum housing with IP 67

enclosure rating

Detailed information

- 12 - 20 - 28 - 40 - 52

Registration sensors

FORK SENSORS

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UFnext FORK SENSORS

Product description

The UF ultrasonic sensors reliably

detects labels and materials, regard-

less of printed design, transparency or

surface characteristics. Unlike optical

sensors, the UF3 relies on damping – a

process where the thickness of a mate-

rial determines the degree to which the

sensor absorbs sound waves. A high

level of positioning accuracy and stable

response times make the fork sensor

suitable for nearly any environment. Due

to its small, compact metal housing,

the UF can be used in harsh conditions

and where space is limited. As a result,

the UF3 can distinguish between labels

located just 2 mm apart from one an-

other on an adhesive tape. Applications

include detecting transparent labels on

transparent substrates, detecting labels

with different printed designs or dif-

ferentiating between single- and two-ply

materials.

At a glance

• Detection of transparent, opaque or

printed labels

• Unaffected by metallic foils and

labels

• Fast response time of 250 µs

• Simple and accurate adjustment

via teach-in button, or plus/minus

buttons

• Rugged, IP 65 aluminum housing

Your benets

• Great exibility: UF identies labels

reliably - regardless of whether they

are transparent, opaque or printed

• Fast response times enable precise

detection – even at high web speeds

• Teach-in function enables quick and

easy commissioning

• The aluminum housing meets all re-

quirements for use in harsh industrial

conditions

• High process reliability: Ultrasonic

technology prevents false detection,

which may be caused by ambient

light or shiny surfaces

UFnext

THE CLEAR CHOICE FOR DETECTING

TRANSPARENT LABELS

Additional information

Detailed technical data . . . . . . . . . . 13

Ordering information . . . . . . . . . . . . 15

Dimensional drawings . . . . . . . . . . . .16

Adjustments . . . . . . . . . . . . . . . . . . . .17

Connection diagram. . . . . . . . . . . . . .17

Setting the switching threshold . . . 18

- www.sick.com/UFnext

For more information, simply enter the link or scan the QR code and get direct access to techni-

cal data, CAD design models, operating instructions, software, application examples, and much

more.

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FORK SENSORS UFnext

Detailed technical data

Features

UFnext - Teach-in button UFnext - Plus/minus buttons

Dimensions (W x H x D)

18 mm x 47.5 mm x 92.5 mm

Functional principle

Ultrasonic detection principle

Housing design (light emission)

Fork shaped

Fork width

3 mm

Fork depth

69 mm

Minimum detectable object (MDO)

Gap between labels: 2 mm

Size of labels: 2 mm

Label detection

l

Adjustment

Teach-in button

Cable (depending on type)

Plus/minus buttons

Cable (depending on type)

Teach-in mode

1-point-teach-in

2-point teach-in

Dynamic Teach-in

2-point teach-in

Dynamic Teach-in

Output function

Light/darkswitching, selectable via button

Interfaces

UFnext - Teach-in button UFnext - Plus/minus buttons

IO-Link Funktionen

-

Advanced Funktionen

-

Fieldbus, industrial network

-

Type of eldbus integration

-

Mechanics/electronics

UFnext - Teach-in button UFnext - Plus/minus buttons

Supply voltage

1)

10 V DC ... 30 V DC

Ripple

2)

< 10 %

Power consumption

3)

40 mA

Switching frequency

4)

1.5 kHz

Response time

5)

250 µs

Output type

PNP

NPN (depending on type)

Switching output (voltage)

PNP: HIGH = V

S

– ≤ 2 V / LOW approx. 0 V

NPN: HIGH = approx. V

S

/ LOW ≤ 2 V

(depending on type)

Switching output

Light/dark switching

Output current I

max.

6)

100 mA

Input, teach-in (ET)

Teach: U > 7 V ... < U

V

Run: U < 2 V

Initialization time

100 ms

Connection type

Connector M8, 4-pin

Protection class

7)

III

Circuit protection

Output Q short-circuit protected

Interference pulse suppression

Enclosure rating

IP 65

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UFnext FORK SENSORS

Weight

95 g

Housing material

Aluminum

1)

Limit values, reverse-polarity protected, operation in short-circuit protected network: max. 8 A.

2)

May not exceed or fall below U

v

tolerances.

3)

Without load.

4)

With light/dark ratio 1:1, typical, depending on material and speed.

5)

Signal transit time with resistive load.

6)

Output current minimal 0.03 mA.

7)

Reference voltage DC 50 V.

Ambient data

UFnext - Teach-in button UFnext - Plus/minus buttons

Ambient operating temperature

1)

+5 °C ... +55 °C

Ambient storage temperature

–20 °C ... +70 °C

Shock load

According to EN 60068-2-27

EMC

2)

EN 60947-5-2

1)

Do not bend below 0 °C.

2)

The UFN complies with the Radio Safety Requirements (EMC) for the industrial sector (Radio Safety Class A). It may cause radio interference if used in residential

areas.

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FORK SENSORS UFnext

Ordering information

Other models g www.sick.com/UFnext

UFnext, Teach-in button

• IO-Link: –

• Fork width: 3 mm

• Fork depth: 69 mm

Adjustment Teach-in Verfahren Output type Connection diagram Type Part no.

Teach-in button (Teach-

in, sensitivity, light/dark

switching)

Cable (dynamic Teach-

in)

1-point-teach-in

2-point teach-in

Dynamic Teach-in

PNP Cd-092 UFN3-70P417 605 874 3

NPN Cd-092 UFN3-70N417 605 874 4

Teach-in button (Teach-

in, sensitivity, light/dark

switching)

PNP, NPN Cd-086 UFN3-70B417 6058742

UFnext, Plus/minus buttons

• IO-Link: –

• Fork width: 3 mm

• Fork depth: 69 mm

Adjustment Teach-in Verfahren Output type Connection diagram Type Part no.

Plus/minus buttons

(Teach-in, sensitivity,

light/dark switching)

Cable (dynamic Teach-

in)

2-point teach-in

Dynamic Teach-in

PNP Cd-092 UFN3-70P415 6049679

NPN Cd-092 UFN3-70N415 6049680

Plus/minus buttons

(Teach-in, sensitivity,

light/dark switching)

PNP, NPN Cd-086 UFN3-70B413 6049678

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UFnext FORK SENSORS

Dimensional drawings (Dimensions in mm (inch))

UFnext - Plus/minus buttons

18

(0.71)

2 (0.08)

5 (0.20)

3 (0.12)

22

(0.87)

22.5

(0.89)

10 (0.39)

69

(2.72)

6.5 (0.26)

7

(0.28)

7

(0.28)

12.4

(0.49)

41

(1.61)

4.2 (1.17)

8

(0.31)

14

(0.55)







1 Fork opening: fork width 3 mm, forks depth 69 mm

2 Mounting hole, Ø 4.2 mm

3 Detection axis

UFnext - Teach-in button

18

(0.71)

2

(0.08)

5 (0.20)

3 (0.12)

22

(0.87)

22.5

(0.89)

10 (0.39)

69

(2.72)

6.5 (0.26)

7

(0.28)

7

(0.28)

12.4

(0.49)

41

(1.61)

4.2 (1.17)

8

(0.31)

14

(0.55)







5

(0.20)

1 (0.04)

19.8

(0.78)

All dimensions in mm (inch)

1 Fork opening: fork width 3 mm, forks depth 69 mm

2 Mounting hole, Ø 4.2 mm

3 Detection axis

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17

FORK SENSORS UFnext

Adjustments

UFnext, Plus/minus buttons

3s

6s

1s TI

1s TII

1

2

3

1 Function signal indicator (yellow), switching output

2 Function indicator (red)

3 Plus/minus buttons and function button

UFnext, Teach-in button

3



1 Function signal indicator (yellow), switching output

2 Function signal indicator (green)

3 Teach-in button and function button

Connection diagram

Cd-092

+ (L+)

Teach

- (M)

brn

wht

blu

1

2

3

Q

blk

4

Cd-086

+ (L+)

Q

NPN

- (M)

1

2

3

Q

PNP

4

brn

wht

blu

blk

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18

UFnext FORK SENSORS

Setting the switching threshold

Teach-in dynamic via plus/minus buttons

Press “–” button, teach-in

process is finished.

2. Move multiple labels

through the fork sensor

Notes

Teach-in (static): Setting the switching threshold without movements of label, cf. operating instruction.

Press both the “+” and “–”

buttons together, hold > 1 s and

than release the teach-in buttons.

The red LED flashes.

1. Position label or substrate

in the active area of the

fork sensor

Once teach-in process is complete, the switching threshold can be adjusted at any time using

the “+” or “–” button. To make minor adjustments, press the “+” or “–” button once.

To configure settings quickly, keep the “+” or “–” button pressed for longer.

Switching threshold adaptation:

Only, the first teach-in procedure after switching on is permanently stored. Teach-in can be repeated

cyclically. Switching output also during teach-in active.

Press both the “+” and “–” buttons together (3 seconds) to lock the device and prevent

unintentional actuation.

Press both the “+” and “–” buttons together (6 seconds) to define the switching function

(light/dark switching). Standard setting: Q = light switching.

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FORK SENSORS UFnext

Teach-in dynamic via Teach-in button

Note

Light/dark switching

Fine adjustment

In order to obtain a higher operating reserve, a fine adjustment can be carried out after successful teach-in.

For this purpose, the switching threshold is set close to the taught-in object. The teach-in button must

be pressed and released within 10 s of successful teach-in. Successful setting is signaled by flashing twice at 1 Hz

.

+

Release the teach-in button for < 20 s. If teach-in is

successful, the function indicator (yellow LED) directly

indicates the output state of the sensor. The switching t

hreshold is now optimally set between carrier and label.

The best possible operational safety is provided.

2. End teach-in:

Press the teach-in button for 3 - 20 s. With the

pushbutton pressed down, move several label

with carrier material (label) through the sensor.

The yellow LED flashes at 3 Hz during the

teach-in procedure. Recommendation: Move

at least 3 label + carrier through the sensor.

1. Start teach-in: Position

carrier or label between

the fork

+

Pushbutton lock

The device can be locked against unintended operation by pressing the teach-in button for > 30 s.

The device can be unlocked by pressing the teach-in button again for > 30 s.

You can change between light switching and dark switching by pressing the teach-in button for 20 - 30 s.

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20

WFS FORK SENSORS

Product description

The slim, forked shape of the WFS has

been specially developed for the require-

ments of the labeling process. The

design allows the sensor to be mounted

directly on the edge of a label dispenser.

Difculty in detecting the label gap is

nally eliminated – the sensor’s switch-

ing threshold can be taught-in while the

label strip is running. This sophisticated

operating concept means the sensor

can be adjusted to different labels

quickly, easily, and reliably. The fast

response time guarantees exceptional

repeat accuracy.

At a glance

• Housing with slim forked shape

• Simple and precise setting of the

switching threshold via IO-Link,

teach-in button, or plus/minus but-

tons

• Light/dark switching function

• Fast response time: 50 μs

• PNP or NPN switching output

• Plastic housing with IP 65 enclosure

rating

• Smart sensor with integrated IO-Link

interface

Your benets

• Flexible and simple mounting directly

on the edge of a label dispenser

ensures a high level of accuracy in

the process

• Small housing allows simple installa-

tion even where space is limited

• User-friendly adjustment allows easy

and quick commissioning

• Fast response times enable precise

detection – even at very high track

speeds

• Thanks to IO-Link or external teach-

in, the switching threshold can be

adapted while the process is running,

increasing process reliability

• Easy to access data from the PLC via

IO-Link

WFS

PRECISE DETECTION FOR OPTIMUM

LABEL DETECTION

Additional information

Detailed technical data . . . . . . . . . . .21

Ordering information . . . . . . . . . . . . 23

Dimensional drawings . . . . . . . . . . . .24

Adjustments . . . . . . . . . . . . . . . . . . . .25

Connection diagram. . . . . . . . . . . . . .25

Setting the switching threshold . . . 26

- www.sick.com/WFS

For more information, simply enter the link or scan the QR code and get direct access to techni-

cal data, CAD design models, operating instructions, software, application examples, and much

more.

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SICK Fork Sensors Registration sensors Product information

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