SICK WL34 Bedienungsanleitung
OPERATING INSTRUCTIONS
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
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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.
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© 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
48009201.11O1 | 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
t2
t2
t1
t1
t1+ t2
t0
PNP
NPN
D
H
1
2
3
6
4
5
7
1Yellow LED indicator
2Potentiometer: sensi‐
tivity adjustment
WL34-Xx3x
PNP
NPN
D
H
1
2
3
4
1Yellow LED indicator
2Potentiometer: sensi‐
tivity adjustment
WL34-Rx4x
t2
t2
t1
t1
t1+ t2
t0
D
H
1
2
3
5
4
6
1Yellow LED indicator
2Potentiometer: sensi‐
tivity adjustment
WL34-Rx3x
D
H
1
2
3
1Yellow LED indicator
2Potentiometer: sensi‐
tivity adjustment
GENERAL SAFETY NOTES 1
8009201.11O1 | SICK
Subject to change without notice 5
3Switch: light (L) / dark
(D)
4Switch: NPN / PNP
5Potentiometer: adjust‐
ment of time delay t2
6Potentiometer: adjust‐
ment of time delay t1
7Potentiometer: adjust‐
ment of time stage
3Switch: light (L) / dark
(D)
4Switch: NPN / PNP
3Switch: light (L) / dark
(D)
4Potentiometer: adjust‐
ment of time delay t2
5Potentiometer: adjust‐
ment of time delay t1
6Potentiometer: adjust‐
ment of time stage
3Switch: 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
68009201.11O1 | SICK
Subject to change without notice
6.1 WL34-Bxxx, WL34-Vxxx
UB: 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
3Q/Q- Alarm - (M) - (M)
4-Q/QQ/QQ/QQ/Q
5- Test Test - Alarm
IN = 4 A
1 2 3 4 5
0.14 ...
1.5 mm2
IN = 4 A
1 2 3 4 5
0.14 ...
1.5 mm2
IN = 4 A
12
4 3
12
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
Subject to change without notice 7
6.2 WL34-Rxxx
UB 20 V ... 250 V AC/DC, see "Technical data", page 12
Table 4: AC/DC
WL34-R2x0
1L1
2N
3Relay
4Relay
5Relay
1 2 3 4 5
0.14 ... 1.5 mm2
Table 5: AC/DC relay
Relay
H
D
3WL34-R2x0
H
3
4
5
3
4
5
Imax. = 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
88009201.11O1 | SICK
Subject to change without notice
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
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 3 and figure 4]. You must ensure that the
optical openings of the sensor and reflector are completely clear.
ADDITIONAL FUNCTIONS 7
8009201.11O1 | SICK
Subject to change without notice 9
Figure 3: Alignment Figure 4: Alignment 2
2Sensing 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
04
(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.
710
0.03
714 20
11 160.03
0.03
0.03
10 13
0.15
710
0.03
710
0.03
1Reflector PL80A
2Reflector PL50A
3Reflector PL40A
4Reflector PL30A
5Reflector PL20A
6Diamond Grade reflective tape
7Reflector C110A
3Sensitivity 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.
4Time 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
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