SICK WFZ Manual de usuario

OPERATING INSTRUCTIONS

WFZ

Fork sensors

OPERATING INSTRUCTIONS

WFZ

Fork sensors

Described product

WFZ

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

8023382.14JZ | SICK

Subject to change without notice 3

Contents

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

2 Intended use...................................................................................... 5

3 Operating elements and status indicators.................................... 6

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

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

5.1 DC.............................................................................................................. 8

6 Commissioning.................................................................................. 8

7 Troubleshooting................................................................................. 10

8 Disassembly and disposal............................................................... 11

9 Maintenance...................................................................................... 11

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

CONTENTS

48023382.14JZ | SICK

Subject to change without notice

1 General safety notes

■Read the operating instructions before commissioning.

■

Connection, mounting, and adjustment 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.

■The radiation of the emitted light must not be focused by additional optical

devices.

EN/IEC 60825-1:2014

IEC60825-1:2007

LASERKLASSE 1

Laser

Maximum pulse power < 2,5 mW

Puls length: 4 µs

Wavelength: 650 - 670 nm

Complies with 21 CFR 1040.10

and 1040.11 except for deviations

pursuant to Laser Notice No. 50,

dated June 24, 2007

ATTENTION

WARNING: Interruption, manipulation or incorrect use can lead to hazardous exposure

due to laser radiation.

2 Intended use

The WFZ through-beam photoelectric sensor consists of two opto-electronic sender and

receiver units. The respective sender and receiver units are arranged crosswise so that

objects in the center of the crossing point can be positioned using signals from both

switching outputs (Q1 + Q2). The WFZ is used for the optical, non-contact detection and

positioning of objects.

GENERAL SAFETY NOTES 1

8023382.14JZ | SICK

Subject to change without notice 5

3 Operating elements and status indicators

Figure 1: Indicator LEDs

1Cover side = upper side

2Detection axis

3Male connector, M12, 5-pin

4Fixing hole Ø 5.4 mm

5LED indicator green: supply voltage active

6LED indicator yellow: Status of received light beam Q2

7LED indicator yellow: Status of received light beam Q1

3 OPERATING ELEMENTS AND STATUS INDICATORS

68023382.14JZ | SICK

Subject to change without notice

4 Mounting

1 2 3

6 5

Figure 2: Mounting

1Base screws

2Optional base screws

3Flank screws

4No deformation!

5Flank screws are loose

6Base screws are tight

Normal mounting is recommended to be done with the base screws.

To obtain better stability the optional base screws can be used.

NOTE

It is important that the mounting surface is flat.

NOTE

To obtain full vibration resistance all 6 screws are to be used.

This requires an absolute flat mounting surface to avoid twisting of the sensor.

The reference points of the respective fixing holes to the crossed light beam can be

seen in the dimensional drawing, see figure 8.

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:

– Plug connection

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

tions have been established.

MOUNTING 4

8023382.14JZ | SICK

Subject to change without notice 7

Explanations of the connection diagram (Tables 2–7):

Q = switching outputs

5.1 DC

DC: 10 V ... 30 V DC, see "Technical data", page 11

Table 1: DC

WFZ

1BN + (L+)

2WH Q2

3BU - (M)

4BK Q1

5GY ET

4 3

6 Commissioning

1Alignment: Positioning of objects in the crossed light beams

If one of the two crossed light beams is interrupted, this is signaled by the respective

switching behavior of Q1/Q2.

If light beam 1 is interrupted, switching output Q1 (pin 4) is deactivated.

If light beam 2 is interrupted, switching output Q2 (pin 2) is deactivated.

If an object covers both light beams, light beams 1+2 are interrupted and signaled by

switching outputs Q1 + Q2.

Figure 3: Switching outputs

1Light beam 1, Q1

2Light beam 2, Q2

3Crossing point

5 ELECTRICAL INSTALLATION

88023382.14JZ | SICK

Subject to change without notice

Figure 4: Reference points

The size of the object must be taken into account when positioning the switching point, see

figure 4.

The positioning procedure is carried out as follows:

Point determination

1. Move the tool into the WFZ until a switching output switches

2. Move the tool sideways until the second switching output switches

3. Move back to the central position and then move towards the center of the fork until

the crossing point is reached and both switching outputs switch

Figure 5: Point determination at the object tip

The alignment of the tool on the Z axis can also be ascertained by repositioning the tool on

the Z axis after point determination has been carried out (Step 4, 5 and 6).

COMMISSIONING 6

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Subject to change without notice 9

Figure 6: Second point determination

If two points on the tool’s Z axis lie within the WFZ’s crossing point, the tool is not only cen‐

trally aligned but also perpendicular to the WFZ.

Figure 7: Correct positioning in the crossing point, perpendicular to the WFZ

2Teach-in function

Route pin 5 and gray cable to + (L+) for > 1 s. The yellow LEDs flash during the teach-in

procedure.

NOTE

For maximum accuracy, we recommend using the teach-in function before every measure‐

ment. At least, however:

•after initial commissioning of the sensor

•after cleaning

•if the light beams display a weak signal, even though the light path is clear

3 PNP (Load → M): light path free, output (Q) high

7 Troubleshooting

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

7 TROUBLESHOOTING

10 8023382.14JZ | SICK

Subject to change without notice

Tabla de contenidos

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