SICK WT24-2 Series User manual

BETRIEBSANLEITUNG

WT24-2

Kompakt-Lichtschranken

OPERATING INSTRUCTIONS

WT24-2

Compact photoelectric sensors

Described product

W24-2

WT24-2

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 modi‐

fication, 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.

Original document

This document is an original document of SICK AG.

2006/42/EC

SAFETY

OPERATING INSTRUCTIONS

8008784.1DMA/2022-07-12 | SICK O P E R A T I N G I N S T R U C T I O N S | WT24-2 3

Subject to change without notice

Contents

1 About this document................................................................................ 5

2 Safety information.................................................................................... 6

3 Product description.................................................................................. 6

4 Mounting................................................................................................... 7

5 Electrical installation................................................................................ 7

6 Additional functions.................................................................................. 10

7 Commissioning......................................................................................... 11

8 Devices with special features.................................................................. 13

9 Troubleshooting........................................................................................ 14

10 Disassembly and disposal....................................................................... 14

11 Maintenance............................................................................................. 14

12 Technical data........................................................................................... 15

13 Annex......................................................................................................... 16

OPERATING INSTRUCTIONS

4O P E R A T I N G I N S T R U C T I O N S | WT24-2 8008784.1DMA/2022-07-12 | SICK

Subject to change without notice

1 About this document

1.1 Further information

You can find the product page under the Product ID at: pid.sick.com/{P/N}.

P/N corresponds to the part number of the product.

The following information is available depending on the product:

•Data sheets

•These publication in all available languages

•CAD files and dimensional drawings

•Certificates (e.g., declaration of conformity)

•Other publications

•Software

•Accessories

1.2 Symbols and document conventions

Warnings and other notes

DANGER

Indicates a situation presenting imminent danger, which will lead to death or serious

injuries if not prevented.

WARNING

Indicates a situation presenting possible danger, which may lead to death or serious

injuries if not prevented.

CAUTION

Indicates a situation presenting possible danger, which may lead to moderate or minor

injuries if not prevented.

NOTICE

Indicates a situation presenting possible danger, which may lead to property damage if

not prevented.

NOTE

Highlights useful tips and recommendations as well as information for efficient and

trouble-free operation.

Instructions to action

bThe arrow denotes instructions to action.

1. The sequence of instructions is numbered.

2. Follow the order in which the numbered instructions are given.

✓The tick denotes the results of an action.

OPERATING INSTRUCTIONS

8008784.1DMA/2022-07-12 | SICK O P E R A T I N G I N S T R U C T I O N S | WT24-2 5

Subject to change without notice

2 Safety information

2.1 General safety notes

2.1.1 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.

2.2 Notes on UL approval

The device shall be supplied from an isolating transformer having a secondary overcur‐

rent protective device that complies with UL 248 to be installed in the field rated either:

a) max 5 amps for voltages 0 ~ 20 V (0 ~ 28.3 V peak), or

b) 100 / Vp for voltages of 20 ~ 30 V (28.3 ~ 42.4 V peak).

Alternatively, they can be supplied from a Class 2 power supply.

UL Environmental Rating: Enclosure type 1

2.3 Correct use

The WT24-2 is an opto-electronic photoelectric proximity sensor (referred to as "sensor"

in the following) for the optical, non-contact detection of objects, animals, and persons.

If the product is used for any other purpose or modified in any way, any warranty claim

against SICK AG shall become void.

3 Product description

3.1 Operating elements and status indicators

Photoelectric proximity sensor with background suppression.

OPERATING INSTRUCTIONS

6O P E R A T I N G I N S T R U C T I O N S | WT24-2 8008784.1DMA/2022-07-12 | SICK

Subject to change without notice

Table 1: Display and operating elements

t1+ t2

PNP

NPN

1.0

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensing range

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

PNP

NPN

1.0

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensing range

3Switch: light (L)/dark

(D)

4Switch: NPN/PNP

t1+ t2

1.0

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensing range

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

1.0

1Yellow LED indicator

2Potentiometer: adjust‐

ment of sensing range

3Switch: light (L)/dark

(D)

4 Mounting

Mount the sensorusing a suitable mounting bracket (see the SICK range of accesso‐

ries).

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

Note the preferred direction of the object relative to the sensor, cf. see „Dimensional

drawing“, page 16.

5 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.

OPERATING INSTRUCTIONS

8008784.1DMA/2022-07-12 | SICK O P E R A T I N G I N S T R U C T I O N S | WT24-2 7

Subject to change without notice

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

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

5.1 WT24-2Bxxx, WT24-2Vxxx

UB: 10 . 30VDC, see „Technical data“, page 15

Table 2: DC

WT24-2 B3x3 B2x0 V2x0 B4x0 V5x0 V510S15 B410S25

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

2- (M) - (M) - (M) Test Test Alarm n. c.

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

4-Q/QQ/QQ/QQ/QQ/QQ/Q

5- Test Test - Alarm Test -

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

2 1

OPERATING INSTRUCTIONS

8O P E R A T I N G I N S T R U C T I O N S | WT24-2 8008784.1DMA/2022-07-12 | SICK

Subject to change without notice

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)

5.2 WT24-2Rxxx

UB 20 V ... 250 V AC/DC, see „Technical data“, page 15

Table 4: AC/DC

WT24-R2x0 WT24-2R5x8 WT24-2R5x9

1L1 / + N / - N / -

2N / - NC NC

3Relay n. c. n. c.

4Relay NO NO

5Relay L1 / + L1 / +

1 2 3 4 5

0.14 ... 1.5 mm2

IN = 4A

OPERATING INSTRUCTIONS

8008784.1DMA/2022-07-12 | SICK O P E R A T I N G I N S T R U C T I O N S | WT24-2 9

Subject to change without notice

Table 5: AC/DC relay

Relay

3WT24-2R2x0

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)

WT24-2R5x8, WT24-2R5x9: Imax. = 2.5A @ 250 V AC, 2.5A @ 24 V DC, 0.125A @ 250 V

6 Additional functions

Alarm

Alarm output: the sensor (WT24-2Vxxx) features a pre-failure notification output

(“Alarm” in connection diagram [see „WT24-2Bxxx, WT24-2Vxxx“, page 8]), which

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

indicator flashes in this case. Possible causes: sensor 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)

OPERATING INSTRUCTIONS

10 O P E R A T I N G I N S T R U C T I O N S | WT24-2 8008784.1DMA/2022-07-12 | SICK

Subject to change without notice

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