SICK WFZ Bedienungsanleitung
OPERATING INSTRUCTIONS
WFZ
Fork sensors
Described product
WFZ
Manufacturer
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
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Original document
This document is an original document of SICK AG.
2006/42/EC
NO
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
NO
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
1
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
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3 Operating elements and status indicators
4
4
2
3
6
5
7
4
1
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
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4 Mounting
1 2 3
6 5
4
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
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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
12
5
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.
3
1
2
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
1.
2.
3.
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
1
2
3
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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4
5
6
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
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