SICK WLD26 Manuale utente

OPERATING INSTRUCTIONS

WLD26

OPERATING INSTRUCTIONS

WLD26

Described product

WLD26

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

28020356.14CS | SICK

Subject to change without notice

Contents

1 Safety information............................................................................ 4

1.1 General safety notes................................................................................ 4

1.2 Notes on UL approval............................................................................... 4

2 Intended use...................................................................................... 4

3 Operating and status indicators...................................................... 4

4 Mounting............................................................................................. 4

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

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

7 Commissioning.................................................................................. 7

8 Troubleshooting................................................................................. 9

9 Disassembly and disposal............................................................... 10

10 Maintenance...................................................................................... 10

11 Technical data.................................................................................... 10

11.1 Dimensional drawings.............................................................................. 11

CONTENTS

8020356.14CS | SICK

Subject to change without notice 3

1 Safety information

1.1 General safety notes

■Read the operating instructions before commissioning.

■

Connection, mounting, and configuration may only be performed by trained

specialists.

■

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.

1.2 Notes on UL approval

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

UL Environmental Rating: Enclosure type 1

2 Intended use

The WLD26 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.

3 Operating and status indicators

1LED indicator yellow: status of received light beam

2LED indicator green: supply voltage active

4 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 < 1,3 Nm.

1 SAFETY INFORMATION

48020356.14CS | SICK

Subject to change without notice

5 Electrical installation

The sensors must be connected in a voltage-free state (UV = 0 V). The following informa‐

tion must be observed, depending on the connection type:

– Male connector connection: Note pin assignment

– Cable: wire color

Only apply voltage/switch on the voltage supply (UV > 0 V) once all electrical connec‐

tions have been established.

Explanations on connection diagram (table 1 - table 5)

Alarm = alarm output (table 4)

Health = alarm output (table 4)

Q / Q = switching outputs

Test = test input

UB: 10 ... 30 V DC

Table 1: Connections

Wxx26x- x4 xH x5 xI

1 = BN

2 = WH

3 = BU

4 = BK

5= GY

4 3

0.14 mm2

AWG26

4 3

0.14 mm2

AWG26

Wxx26x- x9 xB

1 = BN

2 = BU

3 = not connected

4 = BK

5= WH

6 = GY

7 = not connected

3 4

2 5

IN = 4 A

IN = 6 A

Table 2: DC

WLD26

xxXXXxxxZZZ

xx111 xx112 xx113 xx114 xx115 xx116 xx421 xx422 xx721 xx722

BN + (L+)

WH QQAlarm Health Alarm Health Q QQQ

BU - (M)

BK QQQQQQQQQQ

GR - - - - - - Test →

L+

Test →

L+

Test →

ELECTRICAL INSTALLATION 5

8020356.14CS | SICK

Subject to change without notice 5

Table 3: Push / pull

Push-pull

(≤ 100 mA)

+ (L+)

‒ (M)

+ (L+)

‒ (M)

Push-pull

(≤ 100 mA)

+ (L+)

‒ (M)

+ (L+)

‒ (M)

6 Additional functions

Alarm

Alarm output: The sensor (WLD26) features a pre-failure notification output (“Alarm” in

connection diagram [table 4]), 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 or reflector is contaminated, sensor is out of alignment. In the good state: LOW

(0), if excessively contaminated HIGH (1).

Health

Health output: The sensor (WLD26) features a pre-failure notification output (“Health”

in connection diagram [table 4]), which issues a notification if the sensor is only ready

for operation to a limited extent or the cable has been interrupted. Possible causes:

Sensor or reflector is contaminated, sensor is out of alignment, cable is damaged. In

the good state: HIGH (1), if excessively contaminated or in the event of cable interrup‐

tion LOW (0). The yellow LED indicator flashes in this case.

6 ADDITIONAL FUNCTIONS

68020356.14CS | SICK

Subject to change without notice

Table 4: Alarm / Health

Alarm (≤ 100 mA) Health (≤100 mA)

+ (L+)

Alarm

‒ (M)

+ (L+)

Health

‒ (M)

+ (L+)

Alarm

‒ (M)

+ (L+)

Health

‒ (M)

Test input

Test input: The WLD26 sensors feature a test input (“TI” or “Test” on the connection

diagram [see table 2 and table 5]), which can be used to switch the sender off and,

therefore, check that the sensor is functioning correctly: If female cable connectors with

LED indicators are used, you have to ensure that the TI is assigned accordingly.

It is important that there is no object between the sensor and reflector; activate the test

input (see the connection diagram [see table 2 and table 5]). The send LED is shut

down or the detection of an object is simulated. Refer to table 5 to check the function.

If the switching output fails to behave in accordance with table 5, check the application

conditions. See section Fault diagnosis.

Table 5: Test

Test → M Test → L+

+ (L+)

Test

– (M)

+ (L+)

Test

– (M)

+ (L+)

Test

– (M)

+ (L+)

Test

– (M)

7 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 1]. You must ensure that the optical

openings of the sensor and reflector are completely clear.

ADDITIONAL FUNCTIONS 6

8020356.14CS | SICK

Subject to change without notice 7

Figure 1: Alignment

2Sensing range

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

diagram [see figure 2] (x = sensing range, y = operating reserve).

100

WLD26P-xxxxx1xx

(13.12)

(26.25)

(39.37)

(52.49)

(65.62)

Operating reserve

Distance in m (feet)

Sensing range

Figure 2: Characteristic line 1

1Reflector PL22

2Reflector P250

3Reflector PL20A

4Reflector PL30A

5Reflector PL40A

6Reflector C110

7Reflector PL80A

Sensing range

Distance in m (feet)

0.25 5 7

0.25 11 15

0.25 9 12

0.25 5 7

0.25 11 15

0.25 14 18

Sensing range max.

(13.12)

(26.25)

(39.37)

(52.49)

(65.62)

Figure 3: Bar graph 1

7 COMMISSIONING

88020356.14CS | SICK

Subject to change without notice

0 4

(13.12)

(26.25)

(39.37)

(52.49)

(65.62)

100

Operating reserve

Distance in m (feet)

Sensing range

WLD26P-xxxxx1xx

Figure 4: Characteristic line 2

1Reflector PL20 CHEM

2Reflector P250 CHEM

3Reflector P250H

4Reflector PL40 Antifog

Sensing range

Distance in m (feet)

0.25 7 10

0.25 10 14

0.25 4 6

Sensing range max.

(13.12)

(26.25)

(39.37)

(52.49)

(65.62)

0.25 10 12

Figure 5: Bar graph 2

0 2

(6.56)

(19.69)

(32.81)

100

Operating reserve

Distance in m (feet)

Sensing range

WLD26P-xxxxx1xx

(13.12)

(26.25)

Figure 6: Characteristic line 3

1REF-IRF (50x70 mm)

Sensing range

Distance in m (feet)

0.3 3 5

Sensing range max.

(6.56)

(13.12)

(19.69)

(26.25)

(32.81)

Figure 7: Bar graph 3

8 Troubleshooting

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

LED indicator/fault pattern Cause Measures

Switching outputs do not

behave in accordance with

table 3 - table 4

Short-circuit Check electrical connections

Yellow LED flashes Distance between sensor and

reflector is too large / light

beam is not completely

aligned to the reflector /

reflector is not suitable / Front

screen and/or reflector is con‐

taminated.

Check sensing range / check

alignment / SICK reflector is

recommended / Cleaning of

the optical surfaces (sensor

and reflector).

TROUBLESHOOTING 8

8020356.14CS | SICK

Subject to change without notice 9

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