SICK WL24-2 Series Manual de usuario

OPERATING INSTRUCTIONS

WL24-2

Compact photoelectric sensors

en, de, fr, pt, it, es, zh, ja, ru

OPERATING INSTRUCTIONS

WL24-2

Compact photoelectric sensors

en, de, fr, pt, it, es, zh, ja, ru

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

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

48008783.14BT | 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

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

t1+ t2

PNP

NPN

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensitivity

WL24-2Xx3x

PNP

NPN

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensitivity

WL24-2Rx4x

t1+ t2

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensitivity

WL24-2Rx3x

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensitivity

GENERAL SAFETY NOTES 1

8008783.14BT | SICK

Subject to change without notice 5

3Switch: light (L) / dark

(D)

4Switch: NPN/PNP

5Potentiometer: adjust‐

ment of time delay t2

6Potentiometer: adjust‐

ment of time delay t1

7Potentiometer: adjust‐

ment of time stage

3Switch: light (L) / dark

(D)

4Switch: NPN/PNP

3Switch: light (L) / dark

(D)

4Potentiometer: adjust‐

ment of time delay t2

5Potentiometer: adjust‐

ment of time delay t1

6Potentiometer: adjust‐

ment of time stage

3Switch: 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

68008783.14BT | SICK

Subject to change without notice

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

6.1 WL24-2Bxxx, WL24-2Vxxx

UB: 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

3Q/Q- Alarm - (M) - (M)

4-Q/QQ/QQ/QQ/Q

5- Test Test - Alarm

IN = 4 A

1 2 3 4 5

0.14 ...

1.5 mm2

IN = 4 A

1 2 3 4 5

0.14 ...

1.5 mm2

IN = 4 A

4 3

ELECTRICAL INSTALLATION 6

8008783.14BT | SICK

Subject to change without notice 7

Table 3: DC

NPN

PNP

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

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

Table 4: AC/DC

WL24-R2x0 WL24-2R5x8

1L1 N

2N NC

3Relay n. c.

4Relay NO

5Relay L1

1 2 3 4 5

0.14 ... 1.5 mm2

≤ 4 A

6 ELECTRICAL INSTALLATION

88008783.14BT | SICK

Subject to change without notice

Table 5: AC/DC relay

Relay

3WL24-2R2x0

Imax. = 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)

WL24-2R5x8, WL24-2R5x9: Imax. = 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

8008783.14BT | SICK

Subject to change without notice 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

1Alignment

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

2Sensing 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 8008783.14BT | SICK

Subject to change without notice

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