SICK WL18-3 Series User manual
OPERATING INSTRUCTION
WL(F)18-3
Compact photoelectric sensors
en / de / fr / it / pt / es / zh / ja / ru
SICK AG, Erwin-Sick-Strasse 1, D-79183 Waldkirch
8010585.YM42
Photoelectric retro-reflective sensor
Operating instructions
1Safety notes
■Read the operating instructions before commissioning.
■Connection, mounting, and setting may only be performed by trained specialists.
■Not a safety component in accordance with the EU Machinery Directive.
■UL: Only for use in applications in accordance with NFPA 79. These devices shall
be protected by a 1 A fuse suitable for 30 V DC. Adapters listed by UL with connec‐
tion cables are available. Enclosure type 1.
■When commissioning, protect the device from moisture and contamination.
■These operating instructions contain information required during the life cycle of
the sensor.
2 Correct use
The WL(F)18-3 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.
Image: A
3 Commissioning
1 Adjust the distance between the sensor and the reflector according to the corre‐
sponding diagram (x = sensing range, y = operating reserve).
8010585.YM42 | SICK
Subject to change without notice 1
y
x [m]
100
10
1
21 3 4 5 6 7
Operating reserve
Scanning
range
max. typical
PL 80 A
C 110
PL 30 A
Diamond
Grade
WL18-3
Operating
range
Image 1: H
2 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.
3 The sensors must be connected in a voltage-free state (Uv = 0 V). The information
in the graphics [B] must be observed, depending on the connection type:
– Male connector connection: pin assignment
– Cable: core color
Only apply voltage/switch on the power supply (Uv > 0 V) once all electrical connec‐
tions have been established. The green LED indicator lights up on the sensor.
Explanations of the connection diagram (Graphic B):
Switching outputs Q and /Q (according to Graphic B):
WL(F)18-3P/K/V (PNP: load -> M)
WL(F)18-3N (NPN: load -> L+)
Alarm/health = diagnostic output (see Additional functions)
TI / Test = test input (see Additional functions)
4 Align the sensor with a suitable reflector. Select the position so that the red emit‐
ted 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 E]. You must ensure that
the optical openings of the sensor and reflector are completely clear.
3 COMMISSIONING
28010585.YM42 | SICK
Subject to change without notice
Technical data and connection diagrams (figure B) starting on page 56.
Image: E
5 Sensor which it is not possible to set (WLF18-3): The sensor is set and ready for
operation.
After alignment is complete, move a non-transparent object into the path of the be‐
am. Refer to graphics C and G to check the function. If the switching output fails to
behave in accordance with graphic C, check application conditions. See section
Fault diagnosis.
Sensor with potentiometer:
WL18-3xxx0: The sensitivity is set with the potentiometer (type: 360°). Clockwise
rotation: operating reserve increased; counterclockwise rotation: operating reserve
reduced. We recommend setting the potentiometer to "Maximum." A lower opera‐
ting reserve may be necessary for depolarizing surfaces.
The sensor is adjusted and ready for operation. Refer to graphics C and G to check
the function. If the switching output fails to behave in accordance with graphic C,
check application conditions. See section Fault diagnosis.
Image: C
COMMISSIONING 3
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Subject to change without notice 3
Image: G
5 Additional functions
Alarm output: The sensor (WL(F)18-3Vxxx) features a pre-failure notification output
("Alarm" in connection diagram [B]), which issues a notification if the sensor is only rea‐
dy for operation to a limited extent. Possible causes: Sensor or reflector is contamina‐
ted, sensor is out of alignment. In the good state: LOW (0), if excessively contaminated
HIGH (1).
Test input: The WL18-3X6xx, WL18-3X7xx and WL18-3X8xx sensors feature a test input
("TI" or "Test" on the connection diagram [B]), which can be used to check that the sen‐
sor is functioning correctly: If female cable connectors with LED indicators are used,
you must ensure that the TI is assigned accordingly.
There must be no object between the sensor and reflector; activate the test input (see
the connection diagram [B], TI at 0 V for PNP). The send LED is shut down or the detec‐
tion of an object is simulated. Refer to Graphics C and G to check the function. If the
switching output fails to behave in accordance with Graphic C, check application condi‐
tions. See section Fault diagnosis.
6 Devices with special features
WL18-3P030S07: sensing range: max. 2 m (with PL80A reflector), suitable for detec‐
ting transparent objects
WL18-3P030S08: sensing range: max. 2 m (with PL80A reflector), suitable for detec‐
ting transparent objects, pin 1: L+, pin 2: Q, pin 3: M, pin 4: Q/
WL18-3P430S09: with pre-set sensitivity, sensing range: max. 2.7 m (with PL80A re‐
flector), potentiometer with load point sealed
WL18-3P630S04, WL18-3P430S05, WL18-3P130S06: for extreme shock loads
WL18-3N480, WL18-3P480, WL18-3P680: without polarization filter
7 Fault diagnosis
Table Fault diagnosis indicates which measures are to be taken if the sensor stops working.
4
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Subject to change without notice
8 Table Fault diagnosis
LED indicator/fault pattern /
LED indicator/fault pattern
Cause /
Cause
Measures /
Measures
Green LED does not light up /
Green LED does not light up
No voltage or voltage below
the limit values /
No voltage or voltage below
the limit values
Check the power supply,
check all electrical connecti‐
ons (cables and plug connecti‐
ons) /
Check the power supply,
check all electrical connecti‐
ons (cables and plug connecti‐
ons)
Green LED does not light up /
Green LED does not light up
Voltage interruptions /
Voltage interruptions
Ensure there is a stable power
supply without interruptions /
Ensure there is a stable power
supply without interruptions
Green LED does not light up /
Green LED does not light up
Sensor is faulty /
Sensor is faulty
If the power supply is OK, re‐
place the sensor /
If the power supply is OK, re‐
place the sensor
Green LED lights up, no output
signal when object is detec‐
ted /
Green LED lights up, no output
signal when object is detected
Test input (TI) is not connec‐
ted properly /
Test input (TI) is not connec‐
ted properly
See the note on connecting
the TI /
See the note on connecting
the TI
Yellow LED flashes; if Alarm is
present then take note of the
corresponding output signal /
Yellow LED flashes; if Alarm is
present then take note of the
corresponding output signal
Sensor is still ready for opera‐
tion, but the operating conditi‐
ons are not ideal /
Sensor is still ready for opera‐
tion, but the operating conditi‐
ons are not ideal
Check the operating conditi‐
ons: Fully align the beam of
light (light spot) with the re‐
flector. / Clean the optical sur‐
faces (sensor and reflector). /
Readjust the sensitivity (po‐
tentiometer) / If the potentio‐
meter is set to the max. sen‐
sing range: Reduce the dis‐
tance between the sensor and
the reflector, and check the re‐
flector type against graphic
H. / Reflector is not suitable
for the application in question
(we recommend only using
SICK reflectors) / Check sen‐
sing range and adjust if ne‐
cessary; see graphic H. / Dis‐
tance between the sensor and
the reflector is too long /
Check the operating conditi‐
ons: Fully align the beam of
light (light spot) with the re‐
flector. / Clean the optical sur‐
faces (sensor and reflector). /
Readjust the sensitivity (po‐
tentiometer) / If the potentio‐
meter is set to the max. sen‐
sing range: Reduce the dis‐
tance between the sensor and
the reflector, and check the re‐
flector type against graphic
H. / Reflector is not suitable
TABLE FAULT DIAGNOSIS 8
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Subject to change without notice 5
LED indicator/fault pattern /
LED indicator/fault pattern
Cause /
Cause
Measures /
Measures
for the application in question
(we recommend only using
SICK reflectors) / Check sen‐
sing range and adjust if ne‐
cessary; see graphic H. / Dis‐
tance between the sensor and
the reflector is too long
Signal interruptions when ob‐
ject is detected /
Signal interruptions when ob‐
ject is detected
Depolarizing property of the
object surface (e.g., tape), re‐
flection /
Depolarizing property of the
object surface (e.g., tape), re‐
flection
Reduce sensitivity or change
the position of the sensor /
Reduce sensitivity or change
the position of the sensor
9 Disassembly and disposal
The sensor must be disposed of according to the applicable country-specific regulati‐
ons. Efforts should be made during the disposal process to recycle the constituent ma‐
terials (particularly precious metals).
10 Maintenance
SICK sensors are maintenance-free.
We recommend doing the following regularly:
•Clean the external lens surfaces
•Check the screw connections and plug-in connections
No modifications may be made to devices.
Subject to change without notice. Specified product properties and technical data are
not written guarantees.
9 DISASSEMBLY AND DISPOSAL
68010585.YM42 | SICK
Subject to change without notice
Reflexions-Lichtschranke
Betriebsanleitung
11 Sicherheitshinweise
■Vor der Inbetriebnahme die Betriebsanleitung lesen.
■Anschluss, Montage und Einstellung nur durch Fachpersonal.
■Kein Sicherheitsbauteil gemäß EU-Maschinenrichtlinie.
■UL: Nur zur Verwendung in Anwendungen gemäß NFPA 79. Diese Geräte müssen
mit einer für 30V DC geeigneten 1A-Sicherung abgesichert werden. Von UL geliste‐
te Adapter mit Anschlusskabeln sind verfügbar. Enclosure type 1.
■Gerät bei Inbetriebnahme vor Feuchte und Verunreinigung schützen.
■Diese Betriebsanleitung enthält Informationen, die während des Lebenszyklus des
Sensors notwendig sind.
12 Bestimmungsgemäße Verwendung
Die WL(F)18-3 ist eine optoelektronische Reflexions-Lichtschranke (im Folgenden Sen‐
sor genannt) und wird zum optischen, berührungslosen Erfassen von Sachen, Tieren
und Personen eingesetzt. Zur Funktion wird ein Reflektor benötigt. Bei jeder anderen
Verwendung und bei Veränderungen am Produkt verfällt jeglicher Gewährleistungsan‐
spruch gegenüber der SICK AG.
Abb.: A
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Subject to change without notice 7
13 Inbetriebnahme
1 Distanz zwischen Sensor und Reflektor mit dem zugehörigen Diagramm [vgl. H] ab‐
gleichen (x = Schaltabstand, y = Funktionsreserve).
y
x [m]
100
10
1
21 3 4 5 6 7
Operating reserve
Scanning
range
max. typical
PL 80 A
C 110
PL 30 A
Diamond
Grade
WL18-3
Operating
range
Abb: H
2 Sensor und Reflektor an geeignete Befestigungswinkel montieren (siehe SICK-Zu‐
behör-Programm). Sensor und Reflektor zueinander ausrichten.
Maximal zulässiges Anzugsdrehmoment des Sensors von 1.3 Nm beachten.
3 Anschluss der Sensoren muss spannungsfrei (UV = 0 V) erfolgen. Je nach An‐
schlussart sind die Informationen in den Grafiken [vgl. B] zu beachten:
– Steckeranschluss: Pinbelegung
– Leitung: Adernfarbe
Erst nach Anschluss aller elektrischen Verbindungen die Spannungsversorgung (UV
> 0 V) anlegen bzw. einschalten. Am Sensor leuchtet die grüne Anzeige-LED.
Erläuterungen zum Anschlussschema (Grafik B):
Schaltausgänge Q bzw. /Q (gemäß Grafik B):
WL(F)18-3P / K / V (PNP: Last -> M)
WL(F)18-3N (NPN: Last -> L+)
Alarm / Health = Diagnoseausgang (siehe Zusatzfunktionen)
TE / Test = Testeingang (siehe Zusatzfunktionen)
4 Sensor auf geeigneten Reflektor ausrichten. Positionierung so wählen, dass der ro‐
te Sendelichtstrahl in der Mitte des Reflektors auftrifft. Der Sensor muss freie Sicht
auf den Reflektor haben, es darf sich kein Objekt im Strahlengang befinden [vgl.
E]. Es ist darauf zu achten, dass die optischen Öffnungen von Sensor und Reflektor
vollständig frei sind.
13 INBETRIEBNAHME
88010585.YM42 | SICK
Subject to change without notice
Technische Daten und Anschlussschemata (Grafik B) ab Seite 56.
Abb.: E
5 Sensor ohne Einstellmöglichkeit (WLF18-3): Sensor ist eingestellt und betriebsbe‐
reit.
Nach durchgeführter Ausrichtung ein nicht-transparentes Objekt in den Strahlen‐
gang führen. Zur Überprüfung der Funktion Grafik C und G heranziehen. Verhält
sich der Schaltausgang nicht gemäß Grafik C, Einsatzbedingungen prüfen. Siehe
Abschnitt Fehlerdiagnose.
Sensor mit Potentiometer:
WL18-3xxx0: Mit dem Potentiometer (Art: 360°) wird die Empfindlichkeit einge‐
stellt. Drehung nach rechts: Erhöhung der Funktionsreserve, Drehung nach links:
Verringerung der Funktionsreserve. Wir empfehlen, das Potentiometer auf "Maxi‐
mal" zu stellen. Bei depolarisierenden Oberflächen kann eine geringere Funktions‐
reserve empfehlenswert sein.
Sensor ist eingestellt und betriebsbereit. Zur Überprüfung der Funktion Grafik C
und G heranziehen. Verhält sich der Schaltausgang nicht gemäß Grafik C, Einsatz‐
bedingungen prüfen. Siehe Abschnitt Fehlerdiagnose.
INBETRIEBNAHME 13
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Subject to change without notice 9
This manual suits for next models
10
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