SICK W34 Series Manuale utente

OPERATING INSTRUCTIONS

WT34

Compact photoelectric sensors

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

OPERATING INSTRUCTIONS

WT34

Compact photoelectric sensors

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

Described product

W34

WT34

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

8009202.11O1 | 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 WT34-Bxxx, WT34-Vxxx............................................................................ 7

6.2 WT34-Rxxx................................................................................................. 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.................................................................................... 14

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

CONTENTS

48009202.11O1 | 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 WT34 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.

4 Operating elements and status indicators

Photoelectric proximity sensor with background suppression.

Table 1: Display and operating elements

WT34-Bx2x, -Vx2x, -Bx5x, -

Vx5x

t1+ t2

PNP

NPN

1.0

1Yellow LED indicator

WT34-Bx1x, -Vx1x, -Bx4x, -

Vx4x

PNP

NPN

1.0

1Yellow LED indicator

WT34-Rx2x, -Rx5x

t1+ t2

1.0

1Yellow LED indicator

WT34-Rx1x, -Rx4x

1.0

1Yellow LED indicator

GENERAL SAFETY NOTES 1

8009202.11O1 | SICK

Subject to change without notice 5

2Potentiometer: adjust‐

ment of the 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

2Potentiometer: adjust‐

ment of the sensing

range

3Switch: light (L) / dark

(D)

4Switch: NPN / PNP

2Potentiometer: adjust‐

ment of the 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

2Potentiometer: adjust‐

ment of the sensing

range

3Switch: light (L) / dark

(D)

5 Mounting

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

sories).

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 15.

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 cover 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 cover is open, the M16 fitting can be swiveled horizontally and vertically.

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

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

M16 fitting 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.

Explanations of the connection diagram (tables, chapter 6.1 and see "WT34-Rxxx",

page 8):

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

n. c. = not connected

5 MOUNTING

68009202.11O1 | SICK

Subject to change without notice

NC = normally closed

NO = normally open

Q / Q = switching outputs

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

6.1 WT34-Bxxx, WT34-Vxxx

UB: 10 ... 30 V DC, see "Technical data", page 14

Table 2: DC

WT34- 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

8009202.11O1 | 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 WT34-Rxxx

UB 20 V ... 250 V AC/DC, see "Technical data", page 14

Table 4: AC/DC

WT34-R2x0

1L1 / +

2N / -

3Relay

4Relay

5Relay

1 2 3 4 5

0.14 ... 1.5 mm2

IN = 4 A

6 ELECTRICAL INSTALLATION

88009202.11O1 | SICK

Subject to change without notice

Table 5: AC/DC relay

Relay

3WT34-R2x0

Imax. = 4 A @ 250 V AC

4 A @ 24 V DC

0.125 A @ 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)

7 Additional functions

Alarm

Alarm output: the sensor (WT34-Vxxx) features a pre-failure notification output (“Alarm”

in connection diagram [see "WT34-Bxxx, WT34-Vxxx", page 7]), which issues a notifica‐

tion 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 align‐

ment. 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

8009202.11O1 | SICK

Subject to change without notice 9

Test input

Test input: the WT34-B / -V sensors feature a test input (“TI” or “Test” on the connec‐

tion diagram [see "WT34-Bxxx, WT34-Vxxx", 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.

If an object is detected, activate the test input (see the connection diagram [see

"WT34-Bxxx, WT34-Vxxx", page 7 and see table 7], PNP: TE → M). The send LED is shut

down or no object being detected 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 conditions. See section Fault diagnosis.

Table 7: Test

Test

+ (L+)

Test

– (M)

+ (L+)

Test

– (M)

8 Commissioning

1Alignment

WT34-Xx4x, -Xx5x: align sensor on object. Select the position so that the red emitted light

beam hits the center of the object. You must ensure that the optical opening (front screen)

of the sensor is completely clear [see figure 3 and figure 4].

WT34-Xx1x, -Xx2x: align sensor on object. Select the position so that the infrared light (not

visible) hits the center of the object. The correct alignment can only be detected via the

LED indicators. See figure 3 and figure 4. You must ensure that the optical opening (front

screen) of the sensor is completely clear.

Figure 3: Alignment Figure 4: Alignment 2

2Sensing range

7 ADDITIONAL FUNCTIONS

10 8009202.11O1 | SICK

Subject to change without notice

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