O P E R A T I N G I N S T R U C T I O N S
WL34
Compact photoelectric sensors
en, de, fr, pt, it, es, zh, ja, ru
Described product
W34
WL34
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.
© SICK AG. All rights reserved.
Original document
This document is an original document of SICK AG.
2006/42/EC
NO
SAFETY
8009201.11O1 | 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 WL34-Bxxx, WL34-Vxxx............................................................................. 7
6.2 WL34-Rxxx................................................................................................. 8
7 Additional functions.......................................................................... 8
8 Commissioning.................................................................................. 9
9 Devices with special features.......................................................... 11
10 Troubleshooting................................................................................. 11
11 Disassembly and disposal............................................................... 12
12 Maintenance...................................................................................... 12
13 Technical data.................................................................................... 12
13.1 Dimensional drawing................................................................................ 14
CONTENTS
4
8009201.11O1 | 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
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.
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 WL34 is an opto-electronic photoelectric retro-reflective sensor (referred to as "sen‐
sor" in the following) for the optical, non-contact detection of objects, animals, and per‐
sons. 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.
4 Operating elements and status indicators
Table 1: Display and operating elements
WL34-Bx4x
t
2
t
2
t
1
t
1
t
1
+ t
2
t
0
PNP
NPN
D
H
1
2
3
6
4
5
7
1
Yellow LED indicator
2
Potentiometer: sensi‐
tivity adjustment
WL34-Xx3x
PNP
NPN
D
H
1
2
3
4
1
Yellow LED indicator
2
Potentiometer: sensi‐
tivity adjustment
WL34-Rx4x
t
2
t
2
t
1
t
1
t
1
+ t
2
t
0
D
H
1
2
3
5
4
6
1
Yellow LED indicator
2
Potentiometer: sensi‐
tivity adjustment
WL34-Rx3x
D
H
1
2
3
1
Yellow LED indicator
2
Potentiometer: sensi‐
tivity adjustment
GENERAL SAFETY NOTES 1
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Subject to change without notice
5
3
Switch: light (L) / dark
(D)
4
Switch: NPN / PNP
5
Potentiometer: adjust‐
ment of time delay t
2
6
Potentiometer: adjust‐
ment of time delay t
1
7
Potentiometer: adjust‐
ment of time stage
3
Switch: light (L) / dark
(D)
4
Switch: NPN / PNP
3
Switch: light (L) / dark
(D)
4
Potentiometer: adjust‐
ment of time delay t
2
5
Potentiometer: adjust‐
ment of time delay t
1
6
Potentiometer: adjust‐
ment of time stage
3
Switch: light (L) / dark
(D)
5 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 2 Nm.
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 "WL34-Rxxx",
page 8):
Alarm = alarm output (see table 2 and Additional functions)
n. c. = not connected
NC = normally closed
NO = normally open
Q / Q = switching outputs
TE / Test = test input (see table 2 and Additional functions)
5
MOUNTING
6
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6.1 WL34-Bxxx, WL34-Vxxx
U
B
: 10 ... 30 V DC, see "Technical data", page 12
Table 2: DC
WL34- B3x3 B2x0 V2x0 B4x0 V5x0
1 + (L+) + (L+) + (L+) + (L+) + (L+)
2 - (M) - (M) - (M) Test Test
3
Q/Q
- Alarm - (M) - (M)
4 -
Q/Q Q/Q Q/Q Q/Q
5 - Test Test - Alarm
I
N
= 4 A
1 2 3 4 5
0.14 ...
1.5 mm
2
I
N
= 4 A
1 2 3 4 5
0.14 ...
1.5 mm
2
I
N
= 4 A
1
2
4 3
1
2
5
4 3
Table 3: DC
H
D
3
NPN
PNP
4
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)
ELECTRICAL INSTALLATION 6
8009201.11O1 | SICK
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7
6.2 WL34-Rxxx
U
B
20 V ... 250 V AC/DC, see "Technical data", page 12
Table 4: AC/DC
WL34-R2x0
1 L1
2 N
3 Relay
4 Relay
5 Relay
1 2 3 4 5
0.14 ... 1.5 mm
2
Table 5: AC/DC relay
Relay
H
D
3
WL34-R2x0
H
3
4
5
3
4
5
I
max.
= 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)
D
3
4
5
3
4
5
7 Additional functions
Alarm
Alarm output: the sensor (WL34-Vxxx) features a pre-failure notification output (“Alarm”
in connection diagram [see "WL34-Bxxx, WL34-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 or reflector is contaminated, sensor is out
of alignment. In the good state: LOW (0), if excessively contaminated HIGH (1).
6 ELECTRICAL INSTALLATION
8
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Table 6: Alarm
Alarm (≤ 100 mA)
+ (L+)
Alarm
– (M)
+ (L+)
Alarm
– (M)
Test input
Test input: the WL34-B / -V sensors feature a test input (“TI” or “Test” on the connec‐
tion diagram [see "WL34-Bxxx, WL34-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.
There must be no object between the sensor and reflector; activate the test input (see
the connection diagram [see "WL34-Bxxx, WL34-Vxxx", page 7 and see table 7], TE at
0 V for PNP) (PNP: TE → M; NPN: TE → L+). The send LED is shut down or the detection
of an object 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 con‐
ditions. See section Fault diagnosis.
Table 7: Test
Test
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
8 Commissioning
1 Alignment
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 3 and figure 4]. You must ensure that the
optical openings of the sensor and reflector are completely clear.
ADDITIONAL FUNCTIONS 7
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9
Figure 3: Alignment Figure 4: Alignment 2
2 Sensing range
Adjust the distance between the sensor and the reflector according to the corresponding
diagram [see following figure] (x = sensing range, y = operating reserve).
100
10
1
Sensing range
Sensing range
typ. max.
m
(feet)
5
(16.40)
10
(32.81)
15
(49.21)
20
(65.62)
25
(82.02)
Distance in m (feet)
1
2
3
4
5
6
7
Figure 5: characteristic curve
0
4
(13.12)
8
(26.25)
12
(39.37)
16
(52.49)
20
(65.62)
24
(78.74)
5
6
4
3
2
1
Distance in m (feet)
Sensing range
11 16
15 22
Sensing range max.
7
10
0.03
7
14 20
11 160.03
0.03
0.03
10
13
0.15
7
10
0.03
7
10
0.03
1
Reflector PL80A
2
Reflector PL50A
3
Reflector PL40A
4
Reflector PL30A
5
Reflector PL20A
6
Diamond Grade reflective tape
7
Reflector C110A
3 Sensitivity setting
Sensor with potentiometer: open the sensor cover and protective hood, make sure that no
dirt has gotten into the device.
The sensitivity is adjusted with the potentiometer (type: without stop). Clockwise rotation:
operating reserve increased; counterclockwise rotation: operating reserve reduced. We rec‐
ommend setting the potentiometer to “Maximum”. A lower operating reserve may be nec‐
essary for depolarizing surfaces.
The sensor is adjusted and ready for operation.
4 Time function setting
WL34xx4x: no time delay, t1 = time delay, t2 = time delay; for -R: 0 = relay deactivated, 1 =
relay active. Time delay selector switch can be set on the device according to the following
graphic.
Time stages: 0.5 ... 10 s can be adjusted.
8 COMMISSIONING
10
8009201.11O1 | SICK
Subject to change without notice
0
1 2
+
0.5 ... 10 sec.
0.5 ... 10 sec.
0.5 ... 10 sec.
Figure 6: Time functions
9 Devices with special features
WL34-B430S01, WL34-R230S02: preset to dark switching
WL34-B430S03: pin 2: not connected (without test input)
10 Troubleshooting
The Troubleshooting table indicates measures to be taken if the sensor stops working.
Table 8: Troubleshooting
LED indicator/fault pattern Cause Measures
Yellow LED does not light up
even though the light beam is
aligned to the reflector and
there is no object in the path of
the beam
No voltage or voltage below
the limit values
Check the power supply,
check all electrical connec‐
tions (cables and plug connec‐
tions)
Voltage interruptions Ensure there is a stable power
supply without interruptions
Sensor is faulty If the power supply is OK,
replace the sensor
No object in beam path, no out‐
put signal
Test input (Test) is not con‐
nected properly
Check connection of the test
input. When using female
cable connectors with LED
indicators, make sure the test
input is assigned correspond‐
ingly.
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 condi‐
tions are not ideal
Check operating conditions:
align light beam (light stop)
completely on the reflector /
cleaning of optical surfaces
(sensor and reflector) /if
potentiometer is set to max.
sensitivity: reduce distance
between sensor and reflector
and check reflector type /
reflector is not suitable for
selected application (we rec‐
DEVICES WITH SPECIAL FEATURES 9
8009201.11O1 | SICK
Subject to change without notice
11
LED indicator/fault pattern Cause Measures
ommend using only SICK
reflectors) /Check sensing
range and adjust if neces‐
sary. /distance between sen‐
sor and reflector is too large
Signal interruptions when
object is detected
Depolarizing property of the
object surface (e.g., tape),
reflection
Reduce sensitivity or change
the position of the sensor
11 Disassembly and disposal
The sensor must be disposed of according to the applicable country-specific regula‐
tions. Efforts should be made during the disposal process to recycle the constituent
materials (particularly precious metals).
NOTE
Disposal of batteries, electric and electronic devices
•
According to international directives, batteries, accumulators and electrical or
electronic devices must not be disposed of in general waste.
•
The owner is obliged by law to return this devices at the end of their life to the
respective public collection points.
•
This symbol on the product, its package or in this document, indicates
that a product is subject to these regulations.
12 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.
13 Technical data
Table 9: Technical data
WL34-B / -V -R
Sensing range (with reflector PL80A) 0.03 ... 15 m 0.03 ... 15 m
Sensing range max. (with reflector PL80A) 0.03 ... 22 m 0.03 ... 22 m
Light spot diameter/distance Ø 250 mm (15
m)
Ø 250 mm (15
m)
Supply voltage U
B
DC 10 ... 30 V AC / DC 20 ...
250 V
1)
Output current I
max.
100 mA
11 DISASSEMBLY AND DISPOSAL
12
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WL34-B / -V -R
Switching current (switching voltage) I
max.
4 A @ 250 V AC,
4 A @ 24 V DC,
0.125 A @ 250 V
DC
2)
Switching frequency 1000 Hz
3)
10 Hz
3)
Max. response time ≤ 500 µs
4)
≤ 10 ms
4)
Enclosure rating
5)
-B2x0, -B3x3, -
V2x0: IP67
-B4x0, -V5x0:
IP69
6)
-R2x0: IP67
Protection class II
7)
II
7)
Circuit protection A, B, C
8)
A, C
8)
Ambient operating temperature –40 °C ...
+60 °C
–40 °C ...
+60 °C
1)
Limit values; terminal connection: permissible wire cross-sections 0.14 to 1.5 mm
2
, male connector:
≤ 4 A
2)
Usage category: AC-15, DC-13 (EN 60947-1)
3)
With light / dark ratio 1:1
4)
Signal transit time with resistive load
5)
Pursuant to EN 60529
6)
Replaces IP69 K pursuant to ISO 20653: 2013-03
7)
Rated insulation voltage U
i
250 V, overvoltage category II
8)
A = U
B
-connections reverse polarity protected
B = inputs and output reverse-polarity protected
C = Interference suppression
TECHNICAL DATA 13
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Subject to change without notice
13
13.1 Dimensional drawing
1
14,4
(0.57)
6
2
3
4
5
6
27
(1.06)
37
(1.46)
max. 32
(1.26)
14
(0.55)
14
(0.55)
6.5
(0.26)
10.5
(0.41)
14
(0.55)
15.5
(0.61)
70 (2.76)
M5
6.2
(0.24)
30 (1.18)
92 (3.62)
5
(0.20)
Figure 7: Dimensional drawing
1
Alignment sight
2
LED indicator yellow
3
Center of optical axis / Sender
4
Center of optical axis / Receiver
5
Mounting hole ø 5.5 mm, both sides for hexagon nut M5
6
M16 fitting or male connector can be rotated by 90°
13 TECHNICAL DATA
14
8009201.11O1 | SICK
Subject to change without notice
Beschriebenes Produkt
W34
WL34
Hersteller
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Deutschland
Rechtliche Hinweise
Dieses Werk ist urheberrechtlich geschützt. Die dadurch begründeten Rechte bleiben
bei der Firma SICK AG. Die Vervielfältigung des Werks oder von Teilen dieses Werks ist
nur in den Grenzen der gesetzlichen Bestimmungen des Urheberrechtsgesetzes zuläs‐
sig. Jede Änderung, Kürzung oder Übersetzung des Werks ohne ausdrückliche schriftli‐
che Zustimmung der Firma SICK AG ist untersagt.
Die in diesem Dokument genannten Marken sind Eigentum ihrer jeweiligen Inhaber.
© SICK AG. Alle Rechte vorbehalten.
Originaldokument
Dieses Dokument ist ein Originaldokument der SICK AG.
2006/42/EC
NO
SAFETY
16
8009201.11O1 | SICK
Subject to change without notice
Inhalt
14 Allgemeine Sicherheitshinweise..................................................... 18
14.1 Sicherheitshinweise.................................................................................. 18
15 Hinweise zur UL Zulassung.............................................................. 18
16 Bestimmungsgemäße Verwendung............................................... 18
17 Bedien- und Anzeigeelemente........................................................ 18
18 Montage.............................................................................................. 19
19 Elektrische Installation..................................................................... 19
19.1 WL34-Bxxx, WL34-Vxxx............................................................................. 20
19.2 WL34-Rxxx................................................................................................. 21
20 Zusatzfunktionen.............................................................................. 22
21 Inbetriebnahme................................................................................. 23
22 Geräte mit besonderen Merkmalen............................................... 25
23 Störungsbehebung............................................................................ 25
24 Demontage und Entsorgung............................................................ 26
25 Wartung.............................................................................................. 26
26 Technische Daten.............................................................................. 26
26.1 Maßzeichnung........................................................................................... 28
INHALT
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Subject to change without notice
17
14 Allgemeine Sicherheitshinweise
14.1 Sicherheitshinweise
■
Vor der Inbetriebnahme die Betriebsanleitung lesen.
■
Anschluss, Montage und Einstellung nur durch Fachpersonal.
■
2006/42/EC
NO
SAFETY
Kein Sicherheitsbauteil gemäß EU-Maschinenrichtlinie.
■
Gerät bei Inbetriebnahme vor Feuchte und Verunreinigung schützen.
■
Diese Betriebsanleitung enthält Informationen, die während des Lebenszyklus des
Sensors notwendig sind.
15 Hinweise zur UL Zulassung
The device must be supplied by a Class 2 source of supply.
UL Environmental Rating: Enclosure type 1
16 Bestimmungsgemäße Verwendung
Die WL34 ist eine optoelektronische Reflexions-Lichtschranke (im Folgenden Sensor
genannt) und wird zum optischen, berührungslosen Erfassen von Sachen, Tieren und
Personen eingesetzt. Zur Funktion wird ein Reflektor benötigt. Bei jeder anderen Ver‐
wendung und bei Veränderungen am Produkt verfällt jeglicher Gewährleistungsan‐
spruch gegenüber der SICK AG.
17 Bedien- und Anzeigeelemente
Tabelle 10: Anzeige- und Bedienelemente
WL34-Bx4x
t
2
t
2
t
1
t
1
t
1
+ t
2
t
0
PNP
NPN
D
H
1
2
3
6
4
5
7
1
Gelbe Anzeige LED
2
Potentiometer: Einstel‐
lung der Empfindlich‐
keit
WL34-Xx3x
PNP
NPN
D
H
1
2
3
4
1
Gelbe Anzeige LED
2
Potentiometer: Einstel‐
lung der Empfindlich‐
keit
WL34-Rx4x
t
2
t
2
t
1
t
1
t
1
+ t
2
t
0
D
H
1
2
3
5
4
6
1
Gelbe Anzeige LED
2
Potentiometer: Einstel‐
lung der Empfindlich‐
keit
WL34-Rx3x
D
H
1
2
3
1
Gelbe Anzeige LED
2
Potentiometer: Einstel‐
lung der Empfindlich‐
keit
14 ALLGEMEINE SICHERHEITSHINWEISE
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3
Schalter: hell (H) /
dunkel (D)
4
Schalter: NPN / PNP
5
Potentiometer: Einstel‐
lung Zeitverzögerung
t
2
6
Potentiometer: Einstel‐
lung Zeitverzögerung
t
1
7
Potentiometer: Einstel‐
lung Zeitstufe
3
Schalter: hell (H) /
dunkel (D)
4
Schalter: NPN / PNP
3
Schalter: hell (H) /
dunkel (D)
4
Potentiometer: Einstel‐
lung Zeitverzögerung
t
2
5
Potentiometer: Einstel‐
lung Zeitverzögerung
t
1
6
Potentiometer: Einstel‐
lung Zeitstufe
3
Schalter: hell (H) /
dunkel (D)
18 Montage
Sensor und Reflektor an geeignete Befestigungswinkel montieren (siehe SICK-Zubehör-
Programm). Sensor und Reflektor zueinander ausrichten.
Maximal zulässiges Anzugsdrehmoment des Sensors von 2 Nm beachten.
19 Elektrische Installation
Anschluss der Sensoren muss spannungsfrei erfolgen. Je nach Anschlussart sind die
folgenden Informationen zu beachten:
– Steckeranschluss: Pinbelegung beachten: wenn der Deckel geöffnet ist, kann der
Stecker nach horizontal und vertikal geschwenkt werden
– Klemmenanschluss: Zulässigen Leitungsdurchmesser von 5 bis 10 mm beachten.
Wenn der Deckel geöffnet ist, kann die M16-Verschraubung nach horizontal und
vertikal geschwenkt werden. M16-Verschraubung lösen und Dichtungsstopfen ent‐
fernen. Spannungsfreie Versorgungsleitung durchführen und Sensor nach
Tabelle 11 und Tabelle 13 anschließen. M16-Verschraubung mit Dichtung wieder
anziehen, damit die IP-Schutzart des Gerätes sichergestellt wird.
Abbildung 8: Öffnen des Sensors Abbildung 9: Elektrischer Anschluss
Erst nach Anschluss aller elektrischen Verbindungen die Spannungsversorgung anlegen
bzw. einschalten.
Erläuterungen zum Anschlussschema (Tabellen, Kapitel 19.1 und siehe "WL34-Rxxx",
Seite 21):
Alarm = Alarmausgang (siehe Tabelle 11 und Zusatzfunktionen)
n. c. = nicht angeschlossen
NC = Öffner
NO = Schließer
MONTAGE
18
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Subject to change without notice
19
Q / Q = Schaltausgänge
TE / Test = Testeingang (siehe Tabelle 11 und Zusatzfunktionen)
19.1 WL34-Bxxx, WL34-Vxxx
U
B
: 10 ... 30 V DC, siehe "Technische Daten", Seite 26
Tabelle 11: DC
WL34- B3x3 B2x0 V2x0 B4x0 V5x0
1 + (L+) + (L+) + (L+) + (L+) + (L+)
2 - (M) - (M) - (M) Test Test
3
Q/Q
- Alarm - (M) - (M)
4 -
Q/Q Q/Q Q/Q Q/Q
5 - Test Test - Alarm
I
N
= 4 A
1 2 3 4 5
0.14 ...
1.5 mm
2
I
N
= 4 A
1 2 3 4 5
0.14 ...
1.5 mm
2
I
N
= 4 A
1
2
4 3
1
2
5
4 3
19 ELEKTRISCHE INSTALLATION
20
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