SICK WS34 User manual
OPERATING INSTRUCTIONS
WS/WE34
Compact photoelectric sensors
en, de, fr, pt, it, es, zh, ja, ru
Described product
W34
WS/WE34
Manufacturer
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
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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
8009200.11O1 | 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 WS/WE34-Bxxx, WS/WE34-Vxxx............................................................. 7
6.2 WS/WE34-Rxxx......................................................................................... 8
7 Additional functions.......................................................................... 9
8 Commissioning.................................................................................. 10
9 Devices with special features.......................................................... 12
10 Troubleshooting................................................................................. 12
11 Disassembly and disposal............................................................... 13
12 Maintenance...................................................................................... 13
13 Technical data.................................................................................... 13
13.1 Dimensional drawing................................................................................ 15
CONTENTS
48009200.11O1 | 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 WS/WE34 is an opto-electronic through-beam photoelectric sensor (referred to as
"sensor" in the following) for the optical, non-contact detection of objects, animals, and
persons. A sender (WS) and a receiver (WE) are required for operation. 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
WE34-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
WE34-Xx3x
PNP
NPN
D
H
1
2
3
4
1Yellow LED indicator
2Potentiometer: sensi‐
tivity adjustment
WE34-Rx4x
t2
t2
t1
t1
t1+ t2
t0
D
H
1
2
3
5
4
6
1Yellow LED indicator
2Potentiometer: sensi‐
tivity adjustment
WE34-Rx3x
D
H
1
2
3
1Yellow LED indicator
2Potentiometer: sensi‐
tivity adjustment
GENERAL SAFETY NOTES 1
8009200.11O1 | 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 sensors (sender and receiver) using suitable mounting brackets (see the SICK
range of accessories). Align the sender and receiver with each other.
NOTE
Swap the sender and receiver arrangement at every second through-beam photoelec‐
tric sensor and ensure that there is sufficient distance between the through-beam pho‐
toelectric sensors.
Receiver (WE)
Receiver (WE)
Sender (WS)
Sender (WS)
Sender (WS)
Receiver (WE)
Figure 1: Arrangement of several through-beam photoelectric sensors
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 5. Retighten
M16 fitting with seal so that the IP enclosure rating of the device is ensured.
5 MOUNTING
68009200.11O1 | SICK
Subject to change without notice
Figure 2: Opening the sensor Figure 3: 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 "WS/WE34-Rxxx",
page 8):
Alarm = alarm output (see table 3 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)
6.1 WS/WE34-Bxxx, WS/WE34-Vxxx
UB: 10 ... 30 V DC, see "Technical data", page 13
Table 2: DC, WS
WS34- D3x3 D2x0 D4x0 D5x0
1+ (L+) + (L+) + (L+) + (L+)
2- (M) - (M) Test Test
3Test - - (M) - (M)
4- - n.c. n.c.
5- Test - n.c.
IN = 4 A
1 2 3 4 5
0.14 ... 1.5 mm2
IN = 4 A
12
4 3
12
5
4 3
ELECTRICAL INSTALLATION 6
8009200.11O1 | SICK
Subject to change without notice 7
Table 3: DC, WE
WE34- B3x3 B2x0 B4x0 V5x0
1+ (L+) + (L+) + (L+) + (L+)
2- (M) - (M) n.c. n.c.
3Q/Q- - (M) - (M)
4-Q/QQ/QQ/Q
5- - - Alarm
IN = 4 A
1 2 3 4 5
0.14 ... 1.5 mm2
IN = 4 A
12
4 3
12
5
4 3
Table 4: 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)
6.2 WS/WE34-Rxxx
UB 20 V ... 250 V AC/DC, see "Technical data", page 13
6 ELECTRICAL INSTALLATION
88009200.11O1 | SICK
Subject to change without notice
Table 5: AC/DC
WS34-U2x0 WE34-R2x0
1L1 / + L1 / +
2N / - N / -
3- Relay
4- Relay
5- Relay
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
Table 6: AC/DC relay
Relay
H
D
3WE34-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 (WE34-Vxxx) features a pre-failure notification output (“Alarm”
in connection diagram [see "WS/WE34-Bxxx, WS/WE34-Vxxx", page 7]), which issues a
notification if the sensor is only ready for operation to a limited extent. Possible causes:
sensor is contaminated, sensor is out of alignment. PNP: Alarm → M signal reserve
> 50% LOW, NPN: Alarm → L+ signal reserve > 50% HIGH. The LED indicator flashes in
this case.
ADDITIONAL FUNCTIONS 7
8009200.11O1 | SICK
Subject to change without notice 9
Table 7: Alarm
Alarm (≤ 100 mA)
+ (L+)
Alarm
– (M)
+ (L+)
Alarm
– (M)
Test input
Test input: the WS34-B / -V sensors feature a test input (“TI” or “Test” on the connec‐
tion diagram [see "WS/WE34-Bxxx, WS/WE34-Vxxx", page 7 and see table 8]), which
can be used to switch the sender off and, therefore, check that the sensor is function‐
ing correctly: 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 sender and receiver; activate the test input (see
the connection diagram [see "WS/WE34-Bxxx, WS/WE34-Vxxx", page 7 and see
table 8], TE at 0 V). The send LED is shut down or the detection of an object is simu‐
lated. Use the following table to check the function. If the switching output fails to
behave in accordance with the following table, check the application conditions. See
section Fault diagnosis.
Table 8: Test
Test
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
8 Commissioning
1Alignment
Align the sender with the receiver. Select the position so that the red emitted light beam
hits the receiver. Tip: Use white paper or a reflector as an alignment aid. The sender must
have a clear view of the receiver, with no object in the path of the beam [see figure 4]. You
must ensure that the optical openings (front screen) of the sensors are completely clear.
7 ADDITIONAL FUNCTIONS
10 8009200.11O1 | SICK
Subject to change without notice
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