SICK WL24-2 Istruzioni per l'uso

O P E R A T I N G I N S T R U C T I O N S

WL24-2

Compact photoelectric sensors

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O P E R A T I N G I N S T R U C T I O N S

WL24-2

Compact photoelectric sensors

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Described product

W24-2

WL24-2

Manufacturer

SICK AG

Erwin-Sick-Str. 1

79183 Waldkirch

Germany

Legal information

This work is protected by copyright. Any rights derived from the copyright shall be

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 modifica‐

tion, abridgment or translation of this document is prohibited without the express writ‐

ten permission of SICK AG.

The trademarks stated in this document are the property of their respective owner.

Original document

This document is an original document of SICK AG.

2006/42/EC

NO

SAFETY

8008783.14BT | SICK

Subject to change without notice

3

Contents

1 General safety notes......................................................................... 5

1.1 Safety notes.............................................................................................. 5

2 Notes on UL approval........................................................................ 5

3 Correct use......................................................................................... 5

4 Operating elements and status indicators.................................... 5

5 Mounting............................................................................................. 6

6 Electrical installation........................................................................ 6

6.1 WL24-2Bxxx, WL24-2Vxxx........................................................................ 7

6.2 WL24-2Rxxx.............................................................................................. 8

7 Additional functions.......................................................................... 9

8 Commissioning.................................................................................. 10

9 Devices with special features.......................................................... 12

10 Troubleshooting................................................................................. 12

11 Disassembly and disposal............................................................... 13

12 Maintenance...................................................................................... 13

13 Technical data.................................................................................... 13

13.1 Dimensional drawing................................................................................ 15

CONTENTS

4

8008783.14BT | SICK

Subject to change without notice

1 General safety notes

1.1 Safety notes

■

Read the operating instructions before commissioning.

■

Connection, mounting, and setting may only be performed by skilled per‐

son.

■

2006/42/EC

NO

SAFETY

Not a safety component in accordance with the EU Machinery Directive.

■

When commissioning, protect the device from moisture and contamination.

■

These operating instructions contain information required during the life cycle of

the sensor.

2 Notes on UL approval

The device must be supplied by a Class 2 source of supply.

UL Environmental Rating: Enclosure type 1

3 Correct use

The WL24-2 is an opto-electronic photoelectric retro-reflective sensor (referred to as

"sensor" in the following) for the optical, non-contact detection of objects, animals, and

persons. A reflector is required for this product to function. If the product is used for any

other purpose or modified in any way, any warranty claim against SICK AG shall become

void.

4 Operating elements and status indicators

Table 1: Display and operating elements

WL24-2Bx4x

t

2

t

2

t

1

t

1

t

1

+ t

2

t

0

PNP

NPN

D

H

1

2

3

6

4

5

7

1

Yellow LED indicator

2

Potentiometer: adjust‐

ment of sensitivity

WL24-2Xx3x

PNP

NPN

D

H

1

2

3

4

1

Yellow LED indicator

2

Potentiometer: adjust‐

ment of sensitivity

WL24-2Rx4x

t

2

t

2

t

1

t

1

t

1

+ t

2

t

0

D

H

1

2

3

5

4

6

1

Yellow LED indicator

2

Potentiometer: adjust‐

ment of sensitivity

WL24-2Rx3x

D

H

1

2

3

1

Yellow LED indicator

2

Potentiometer: adjust‐

ment of sensitivity

GENERAL SAFETY NOTES 1

8008783.14BT | SICK

Subject to change without notice

5

3

Switch: light (L) / dark

(D)

4

Switch: NPN/PNP

5

Potentiometer: adjust‐

ment of time delay t

2

6

Potentiometer: adjust‐

ment of time delay t

1

7

Potentiometer: adjust‐

ment of time stage

3

Switch: light (L) / dark

(D)

4

Switch: NPN/PNP

3

Switch: light (L) / dark

(D)

4

Potentiometer: adjust‐

ment of time delay t

2

5

Potentiometer: adjust‐

ment of time delay t

1

6

Potentiometer: adjust‐

ment of time stage

3

Switch: light (L) / dark

(D)

5 Mounting

Mount the sensor and the reflector using suitable mounting brackets (see the SICK

range of accessories). Align the sensor and reflector with each other.

Note the sensor’s maximum permissible tightening torque of 2 Nm.

6 Electrical installation

The sensors must be connected in a voltage-free state. The following information must

be observed, depending on the connection type:

– Plug connection: note pin assignment: when the lid is open, the male connector

can be swiveled horizontally and vertically.

– Terminal connection: Note the permissible cable diameter of 5 to 10 mm. When

the lid is open, the M16 connector can be swiveled horizontally and vertically.

Unscrew the M16 connector and remove sealing plug. Lead voltage-free supply

cable through and connect sensor in accordance with table 2 and table 4.

Retighten M16 connector with seal so that the IP enclosure rating of the device is

ensured.

Figure 1: Opening the sensor Figure 2: Electrical connection

Only apply voltage/switch on the power supply once all electrical connections have

been established.

Explanation of the connection diagram (Tables 2-7) which are divided up into DC and

AC/DC devices:

Alarm = alarm output (see table 2 and Additional functions)

n. c. = not connected

NC = normally closed

NO = normally open

Q / Q = switching outputs

5

MOUNTING

6

8008783.14BT | SICK

Subject to change without notice

TE/Test = test input (see table 2 and table 7)

6.1 WL24-2Bxxx, WL24-2Vxxx

U

B

: 10 . 30 V DC, see "Technical data", page 13

Table 2: DC

WL24-2 B3x3 B2x0 V2x0 B4x0 V5x0

1 + (L+) + (L+) + (L+) + (L+) + (L+)

2 - (M) - (M) - (M) Test Test

3

Q/Q

- Alarm - (M) - (M)

4 -

Q/Q Q/Q Q/Q Q/Q

5 - Test Test - Alarm

I

N

= 4 A

1 2 3 4 5

0.14 ...

1.5 mm

2

I

N

= 4 A

1 2 3 4 5

0.14 ...

1.5 mm

2

I

N

= 4 A

1

2

4 3

1

2

5

4 3

ELECTRICAL INSTALLATION 6

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7

Table 3: DC

H

D

3

NPN

PNP

4

H, PNP: Q/Q (≤ 100 mA)

+ (L+)

Q/Q

– (M)

+ (L+)

Q/Q

– (M)

D, PNP: Q/Q (≤ 100 mA)

+ (L+)

Q/Q

– (M)

+ (L+)

Q/Q

– (M)

H, NPN: Q/Q (≤ 100 mA)

+ (L+)

Q/Q

– (M)

+ (L+)

Q/Q

– (M)

D, NPN: Q/Q (≤ 100 mA)

+ (L+)

Q/Q

– (M)

+ (L+)

Q/Q

– (M)

6.2 WL24-2Rxxx

U

B

20 V ... 250 V AC/DC, see "Technical data", page 13

Table 4: AC/DC

WL24-R2x0 WL24-2R5x8

1 L1 N

2 N NC

3 Relay n. c.

4 Relay NO

5 Relay L1

1 2 3 4 5

0.14 ... 1.5 mm

2

3

4

15

2

≤ 4 A

6 ELECTRICAL INSTALLATION

8

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Table 5: AC/DC relay

Relay

H

D

3

WL24-2R2x0

H

3

4

5

3

4

5

I

max.

= 4A@250V AC

4A@24V DC

0.125A@250 V DC

UL: 4A @ 250 V AC, general

use

4A @ 250 V AC, resistive

(NO)

3A @ 250 V AC, resistive

(NC)

4A @ 24 V DC, NO, general

use

3A @ 24 V DC, NC, general

use

R300

B300 (NO contacts only)

D

3

4

5

3

4

5

WL24-2R5x8, WL24-2R5x9: I

max.

= 2.5 A @ 250 V AC, 2.5 A @ 24 V DC, 0.125 A @ 250

V DC

7 Additional functions

Alarm

Alarm output: the sensor (WL24-2Vxxx) features a pre-failure notification output

(“Alarm” in connection diagram [see "WL24-2Bxxx, WL24-2Vxxx", page 7]), which issues

a notification if the sensor is only ready for operation to a limited extent. The LED indi‐

cator flashes in this case. Possible causes: sensor or reflector is contaminated, sensor

is out of alignment. In the good state: LOW (0), if excessively contaminated HIGH (1).

Table 6: Alarm

Alarm (≤ 100 mA)

+ (L+)

Alarm

– (M)

+ (L+)

Alarm

– (M)

ADDITIONAL FUNCTIONS 7

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9

Test input

Test input: the WL24-2B / -V sensors feature a test input (“TI” or “Test” on the connec‐

tion diagram [see "WL24-2Bxxx, WL24-2Vxxx", page 7 and see table 7]), which can be

used to switch the sender off and, therefore, check that the sensor is functioning cor‐

rectly: if female cable connectors with LED indicators are used, you have to ensure that

the TI is assigned accordingly.

There must be no object between the sensor and reflector; activate the test input (see

the connection diagram [see "WL24-2Bxxx, WL24-2Vxxx", page 7 and see table 7], TE at

0V at PNP) (PNP: TE → M; NPN: TE → L+). The send LED is shut down or the detection

of an object is simulated. Use the following table to check the function. If the switching

output fails to behave in accordance with the following table, check the application con‐

ditions. See section Fault diagnosis.

Table 7: Test

Test

+ (L+)

Test

– (M)

+ (L+)

Test

– (M)

8 Commissioning

1 Alignment

Align the sensor with a suitable reflector. Select the position so that the red emitted light

beam hits the center of the reflector. The sensor must have a clear view of the reflector

with no object in the path of the beam [see figure 3 and figure 4]. You must ensure that the

optical openings of the sensor and reflector are completely clear.

Figure 3: Alignment Figure 4: Alignment 2

2 Sensing range

Adjust the distance between the sensor and the reflector according to the corresponding

diagram [see following figure] (x = sensing range, y = operating reserve).

7 ADDITIONAL FUNCTIONS

10

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100

10

1

Sensing range

typ. max.

m

(feet)

5

(16.40)

10

(32.81)

15

(49.21)

20

(65.62)

25

(82.02)

Distance in m (feet)

1

2

3

4

5

6

7

Figure 5: characteristic curve

0

4

(13.12)

8

(26.25)

12

(39.37)

16

(52.49)

20

(65.62)

24

(78.74)

5

6

4

3

2

1

Distance in m (feet)

Sensing range

11 16

15 22

Sensing range max.

7

10

0.03

7

14 20

11 160.03

0.03

10

13

0.15

7

10

0.03

7

10

0.03

1

Reflector PL80A

2

Reflector PL50A

3

Reflector PL40A

4

Reflector PL30A

5

Reflector PL20A

6

Diamond Grade reflective tape

7

Reflector C110A

3 Sensitivity setting

Sensor with potentiometer: open the sensor cover and protective hood, make sure that no

dirt has gotten into the sensor.

The sensitivity is adjusted with the potentiometer (type: without stop). Clockwise rotation:

operating reserve increased; counterclockwise rotation: operating reserve reduced. We rec‐

ommend setting the potentiometer to “Maximum”. A lower operating reserve may be nec‐

essary for depolarizing surfaces.

The sensor is adjusted and ready for operation.

4 Time function setting

WL24-2xx4x: t0= no time delay, t1 = time delay, t2 = time delay; for -2R: 0 = relay deacti‐

vated, 1 = relay active. Time delay selector switch can be set on the device according to the

following graphic.

Time stages: 0.5 ... 10 s can be adjusted.

0

1 2

+

0.5 ... 10 sec.

Figure 6: Time functions

COMMISSIONING

8

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11

9 Devices with special features

WL24-2xx4x: with static front-screen heating for use in environments with gradual tem‐

perature changes within the +5 °C ... +15 °C range.

WL24-2B230S02: glass front screen

WL24-2V240S03: M16 connector, glass front screen, dynamic power heating on the

rear side of the glass, current consumption: 150 mA. The dynamic power heating is

automatically switched on and off depending on the ambient temperature (23-26 °C).

For the use of quick temperature changes in the range of <0 °C…+10 °C

WL24-2V530S04: M12 male connector, 5-pin, glass front screen, dynamic power heat‐

ing on the rear side of the glass, current consumption: 150 mA. The dynamic power

heating is automatically switched on and off depending on the ambient temperature

(23-26 °C). For the use of quick temperature changes in the range of <0 °C…+10 °C

WL24-2R240S05: PG9 connector

WL24-2B430T01: housing is coated with Teflon

10 Troubleshooting

The Troubleshooting table indicates measures to be taken if the sensor stops working.

Table 8: Troubleshooting

LED indicator/fault pattern Cause Measures

Yellow LED does not light up

even though the light beam is

aligned to the reflector and

there is no object in the path of

the beam

No voltage or voltage below

the limit values

Check the power supply,

check all electrical connec‐

tions (cables and plug connec‐

tions)

Voltage interruptions Ensure there is a stable power

supply without interruptions

Sensor is faulty If the power supply is OK,

replace the sensor

No object in beam path, no out‐

put signal

Test input (Test) is not con‐

nected properly

Check connection of the test

input. When using female

cable connectors with LED

indicators, make sure the test

input is assigned correspond‐

ingly.

Yellow LED flashes; if Alarm is

present then take note of the

corresponding output signal

Sensor is still ready for opera‐

tion, but the operating condi‐

tions are not ideal

Check operating conditions:

align light beam (light stop)

completely on the reflector /

cleaning of optical surfaces

(sensor and reflector) /if

potentiometer is set to max.

sensitivity: reduce distance

between sensor and reflector

and check reflector type /

reflector is not suitable for

selected application (we rec‐

ommend using only SICK

reflectors) /Check sensing

range and adjust if neces‐

sary. /distance between sen‐

sor and reflector is too large

9 DEVICES WITH SPECIAL FEATURES

12

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Subject to change without notice

LED indicator/fault pattern Cause Measures

Signal interruptions when

object is detected

Depolarizing property of the

object surface (e.g., tape),

reflection

Reduce sensitivity or change

the position of the sensor

11 Disassembly and disposal

The sensor must be disposed of according to the applicable country-specific regula‐

tions. Efforts should be made during the disposal process to recycle the constituent

materials (particularly precious metals).

NOTE

Disposal of batteries, electric and electronic devices

•

According to international directives, batteries, accumulators and electrical or

electronic devices must not be disposed of in general waste.

•

The owner is obliged by law to return this devices at the end of their life to the

respective public collection points.

•

This symbol on the product, its package or in this document, indicates

that a product is subject to these regulations.

12 Maintenance

SICK sensors are maintenance-free.

We recommend doing the following regularly:

•

Clean the external lens surfaces

•

Check the screw connections and plug-in connections

No modifications may be made to devices.

Subject to change without notice. Specified product properties and technical data are

not written guarantees.

13 Technical data

Table 9: Technical data

WL24-2B / -2V -2R

Sensing range (with reflector PL80A) 0.03 ... 15 m 0.03 ... 15 m

Sensing range max. (with reflector PL80A) 0.03 ... 22 m 0.03 ... 22 m

Light spot diameter/distance Ø 250 mm (15

m)

Ø 250 mm (15

m)

Supply voltage U

B

DC 10 ... 30 V AC / DC 20 ...

250 V

1)

Output current I

max.

100 mA

Switching current (switching voltage) I

max.

4 A @ 250 V AC,

4 A @ 24 V DC,

0.125 A @ 250 V

DC

2)

Switching frequency 1000 Hz

3)

10 Hz

3)

DISASSEMBLY AND DISPOSAL 11

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Subject to change without notice

13

WL24-2B / -2V -2R

Max. response time ≤ 500 µs

4)

≤ 10 ms

4)

Enclosure rating

5)

-2B2x0, -2B3x3,

-2V2x0: IP67

-2B4x0, -2V5x0:

IP69

6)

-2R2x0, -2R5x8:

IP67

Protection class II

7)

II

7)

Circuit protection A, B, C

8)

A, C

8)

Ambient operating temperature –40 °C ...

+60 °C

–40 °C ...

+60 °C

1)

Limit values; terminal connection: permissible wire cross-sections 0.14 to 1.5 mm

2

; male connector:

≤ 4 A

2)

Usage category: AC-15, DC-13 (EN 60947-1)

3)

With light / dark ratio 1:1

4)

Signal transit time with resistive load

5)

Pursuant to EN 60529

6)

Replaces IP69 K pursuant to ISO 20653: 2013-03

7)

Rated insulation voltage U

i

250 V, overvoltage category II

8)

A = U

B

-connections reverse polarity protected

B = inputs and output reverse-polarity protected

C = Interference suppression

13 TECHNICAL DATA

14

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Subject to change without notice

13.1 Dimensional drawing

14

(0.55)

37

(1.46)

max. 32

(1.26)

27

(1.06)

10

(0.39)

M5

87.5 (3.44)

4.7

(0.19)

11.8

(0.46)

30 (1.18)

65 (2.56)

1

2

3

4

6

7

14

(0.55)

6.5

(0.26)

14

(0.55)

17.5

(0.69)

5

14,4

(0.57)

7

Figure 7: Dimensional drawing

1

Alignment sight

2

LED signal strength indicator

3

Center of optical axis, sender

4

Center of optical axis, receiver

5

M5 threaded mounting hole, 6 mm deep

6

M5 threaded mounting hole, through-hole

7

M16 screw fixing and plug rotatable by 90°

TECHNICAL DATA 13

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Subject to change without notice

15

B E T R I E B S A N L E I T U N G

WL24-2

Kompakt-Lichtschranken

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Beschriebenes Produkt

W24-2

WL24-2

Hersteller

SICK AG

Erwin-Sick-Str. 1

79183 Waldkirch

Deutschland

Rechtliche Hinweise

Dieses Werk ist urheberrechtlich geschützt. Die dadurch begründeten Rechte bleiben

bei der Firma SICK AG. Die Vervielfältigung des Werks oder von Teilen dieses Werks ist

nur in den Grenzen der gesetzlichen Bestimmungen des Urheberrechtsgesetzes zuläs‐

sig. Jede Änderung, Kürzung oder Übersetzung des Werks ohne ausdrückliche schriftli‐

che Zustimmung der Firma SICK AG ist untersagt.

Die in diesem Dokument genannten Marken sind Eigentum ihrer jeweiligen Inhaber.

Originaldokument

Dieses Dokument ist ein Originaldokument der SICK AG.

2006/42/EC

NO

SAFETY

8008783.14BT | SICK

Subject to change without notice

17

Inhalt

14 Allgemeine Sicherheitshinweise..................................................... 19

14.1 Sicherheitshinweise.................................................................................. 19

15 Hinweise zur UL Zulassung.............................................................. 19

16 Bestimmungsgemäße Verwendung............................................... 19

17 Bedien- und Anzeigeelemente........................................................ 19

18 Montage.............................................................................................. 20

19 Elektrische Installation..................................................................... 20

19.1 WL24-2Bxxx, WL24-2Vxxx........................................................................ 21

19.2 WL24-2Rxxx.............................................................................................. 22

20 Zusatzfunktionen.............................................................................. 23

21 Inbetriebnahme................................................................................. 24

22 Geräte mit besonderen Merkmalen............................................... 26

23 Störungsbehebung............................................................................ 26

24 Demontage und Entsorgung............................................................ 27

25 Wartung.............................................................................................. 27

26 Technische Daten.............................................................................. 27

26.1 Maßzeichnung........................................................................................... 29

INHALT

18

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Subject to change without notice

14 Allgemeine Sicherheitshinweise

14.1 Sicherheitshinweise

■

Vor der Inbetriebnahme die Betriebsanleitung lesen.

■

Anschluss, Montage und Einstellung nur durch Fachpersonal.

■

2006/42/EC

NO

SAFETY

Kein Sicherheitsbauteil gemäß EU-Maschinenrichtlinie.

■

Gerät bei Inbetriebnahme vor Feuchte und Verunreinigung schützen.

■

Diese Betriebsanleitung enthält Informationen, die während des Lebenszyklus des

Sensors notwendig sind.

15 Hinweise zur UL Zulassung

The device must be supplied by a Class 2 source of supply.

UL Environmental Rating: Enclosure type 1

16 Bestimmungsgemäße Verwendung

Die WL24-2 ist eine optoelektronische Reflexions-Lichtschranke (im Folgenden Sensor

genannt) und wird zum optischen, berührungslosen Erfassen von Sachen, Tieren und

Personen eingesetzt. Zur Funktion wird ein Reflektor benötigt. Bei jeder anderen Ver‐

wendung und bei Veränderungen am Produkt verfällt jeglicher Gewährleistungsan‐

spruch gegenüber der SICK AG.

17 Bedien- und Anzeigeelemente

Tabelle 10: Anzeige- und Bedienelemente

WL24-2Bx4x

t

2

t

2

t

1

t

1

t

1

+ t

2

t

0

PNP

NPN

D

H

1

2

3

6

4

5

7

1

Gelbe Anzeige LED

2

Potentiometer: Einstel‐

lung der Empfindlich‐

keit

WL24-2Xx3x

PNP

NPN

D

H

1

2

3

4

1

Gelbe Anzeige LED

2

Potentiometer: Einstel‐

lung der Empfindlich‐

keit

WL24-2Rx4x

t

2

t

2

t

1

t

1

t

1

+ t

2

t

0

D

H

1

2

3

5

4

6

1

Gelbe Anzeige LED

2

Potentiometer: Einstel‐

lung der Empfindlich‐

keit

WL24-2Rx3x

D

H

1

2

3

1

Gelbe Anzeige LED

2

Potentiometer: Einstel‐

lung der Empfindlich‐

keit

ALLGEMEINE SICHERHEITSHINWEISE 14

8008783.14BT | SICK

Subject to change without notice

19

3

Schalter: hell (H) /

dunkel (D)

4

Schalter: NPN / PNP

5

Potentiometer: Einstel‐

lung Zeitverzögerung

t

2

6

Potentiometer: Einstel‐

lung Zeitverzögerung

t

1

7

Potentiometer: Einstel‐

lung Zeitstufe

3

Schalter: hell (H) /

dunkel (D)

4

Schalter: NPN / PNP

3

Schalter: hell (H) /

dunkel (D)

4

Potentiometer: Einstel‐

lung Zeitverzögerung

t

2

5

Potentiometer: Einstel‐

lung Zeitverzögerung

t

1

6

Potentiometer: Einstel‐

lung Zeitstufe

3

Schalter: hell (H) /

dunkel (D)

18 Montage

Sensor und Reflektor an geeignete Befestigungswinkel montieren (siehe SICK-Zubehör-

Programm). Sensor und Reflektor zueinander ausrichten.

Maximal zulässiges Anzugsdrehmoment des Sensors von 2 Nm beachten.

19 Elektrische Installation

Anschluss der Sensoren muss spannungsfrei erfolgen. Je nach Anschlussart sind die

folgenden Informationen zu beachten:

– Steckeranschluss: Pinbelegung beachten: wenn der Deckel geöffnet ist, kann der

Stecker nach horizontal und vertikal geschwenkt werden

– Klemmenanschluss: Zulässigen Leitungsdurchmesser von 5 bis 10 mm beachten.

Wenn der Deckel geöffnet ist, kann die M16-Verschraubung nach horizontal und

vertikal geschwenkt werden. M16-Verschraubung lösen und Dichtungsstopfen ent‐

fernen. Spannungsfreie Versorgungsleitung durchführen und Sensor nach

Tabelle 11 und Tabelle 13 anschließen. M16-Verschraubung mit Dichtung wieder

anziehen, damit die IP-Schutzart des Gerätes sichergestellt wird.

Abbildung 8: Öffnen des Sensors Abbildung 9: Elektrischer Anschluss

Erst nach Anschluss aller elektrischen Verbindungen die Spannungsversorgung anlegen

bzw. einschalten.

Erläuterungen zum Anschlussschema (Tabellen 2-7), die in DC- und AC/DC-Geräte

unterteilt sind:

Alarm = Alarmausgang (siehe Tabelle 11 und Zusatzfunktionen)

n. c. = nicht angeschlossen

NC = Öffner

NO = Schließer

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8008783.14BT | SICK

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SICK WL24-2 Istruzioni per l'uso

SICK WL24-2 Istruzioni per l'uso

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