SICK WT24-2 Series User manual
OPERATING INSTRUCTIONS
WT24-2
Compact photoelectric sensors
en, de, fr, pt, it, es, zh, ja, ru
Described product
W24-2
WT24-2
Manufacturer
SICK AG
Erwin-Sick-Str. 1
79183 Waldkirch
Germany
Legal information
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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.
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
8008784.14BT | 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 WT24-2Bxxx, WT24-2Vxxx........................................................................ 7
6.2 WT24-2Rxxx.............................................................................................. 8
7 Additional functions.......................................................................... 9
8 Commissioning.................................................................................. 10
9 Devices with special features.......................................................... 12
10 Troubleshooting................................................................................. 13
11 Disassembly and disposal............................................................... 14
12 Maintenance...................................................................................... 14
13 Technical data.................................................................................... 14
13.1 Dimensional drawing................................................................................ 16
CONTENTS
48008784.14BT | 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 WT24-2 is an opto-electronic photoelectric proximity sensor (referred to as "sensor"
in the following) for the optical, non-contact detection of objects, animals, and persons.
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
Photoelectric proximity sensor with background suppression.
Table 1: Display and operating elements
WT24-2Bx2x, -2Vx2x, -2Bx5x,
-2Vx5x
t2
t2
t1
t1
t1+ t2
t0
PNP
NPN
D
H
1
2
3
6
4
5
7
1.0
1Yellow LED indicator
WT24-2Bx1x, -2Vx1x, -2Bx4x,
-2Vx4x
PNP
NPN
D
H
1.0
1
2
3
4
1Yellow LED indicator
WT24-2Rx2x, -2Rx5x
t2
t2
t1
t1
t1+ t2
t0
D
H
1.0
1
2
3
5
4
6
1Yellow LED indicator
2Potentiometer: adjust‐
ment of sensing range
WT24-2Rx1x, -2Rx4x
D
H
1.0
1
2
3
1Yellow LED indicator
2Potentiometer: adjust‐
ment of sensing range
GENERAL SAFETY NOTES 1
8008784.14BT | SICK
Subject to change without notice 5
2Potentiometer: adjust‐
ment of sensing range
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
2Potentiometer: adjust‐
ment of sensing range
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 using a suitable mounting bracket (see the SICK range of acces‐
sories).
Note the sensor’s maximum permissible tightening torque of 2 Nm.
Note the preferred direction of the object relative to the sensor, cf. see "Dimensional
drawing", page 16.
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 lid 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 lid is open, the M16 connector can be swiveled horizontally and vertically.
Unscrew the M16 connector and remove sealing plug. Lead voltage-free supply
cable through and connect sensor in accordance with table 2 and table 4.
Retighten M16 connector 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.
Explanation of the connection diagram (Tables 2-7) which are divided up into DC and
AC/DC devices:
Alarm = alarm output (see table 2 and Additional functions)
n. c. = not connected
5 MOUNTING
68008784.14BT | SICK
Subject to change without notice
NC = normally closed
NO = normally open
Q / Q = switching outputs
TE/Test = test input (see table 2 and table 7)
6.1 WT24-2Bxxx, WT24-2Vxxx
UB: 10 . 30 V DC, see "Technical data", page 14
Table 2: DC
WT24-2 B3x3 B2x0 V2x0 B4x0 V5x0 V510S15 B410S25
1+ (L+) + (L+) + (L+) + (L+) + (L+) + (L+) + (L+)
2- (M) - (M) - (M) Test Test Alarm n. c.
3Q/Q- Alarm - (M) - (M) - (M) - (M)
4-Q/QQ/QQ/QQ/QQ/QQ/Q
5- Test Test - Alarm Test -
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
12
5
4 3
12
4 3
ELECTRICAL INSTALLATION 6
8008784.14BT | SICK
Subject to change without notice 7
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)
6.2 WT24-2Rxxx
UB 20 V ... 250 V AC/DC, see "Technical data", page 14
Table 4: AC/DC
WT24-R2x0 WT24-2R5x8 WT24-2R5x9
1L1 / + N / - N / -
2N / - NC NC
3Relay n. c. n. c.
4Relay NO NO
5Relay L1 / + L1 / +
1 2 3 4 5
0.14 ... 1.5 mm2
IN = 4 A
3
4
15
2
IN = 4 A
3
4
1
5
2
IN = 4 A
6 ELECTRICAL INSTALLATION
88008784.14BT | SICK
Subject to change without notice
Table 5: AC/DC relay
Relay
H
D
3WT24-2R2x0
H
3
4
5
3
4
5
Imax. = 4A @ 250V AC
4A @ 24V DC
0.125A @ 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
WT24-2R5x8, WT24-2R5x9: Imax. = 2.5A @ 250 V AC, 2.5A @ 24 V DC, 0.125A @ 250 V
DC
7 Additional functions
Alarm
Alarm output: the sensor (WT24-2Vxxx) features a pre-failure notification output
(“Alarm” in connection diagram [see "WT24-2Bxxx, WT24-2Vxxx", page 7]), which issues
a notification if the sensor is only ready for operation to a limited extent. The LED indi‐
cator flashes in this case. Possible causes: sensor is contaminated, sensor is out of
alignment. In the good state: LOW (0), if excessively contaminated HIGH (1).
Table 6: Alarm
Alarm (≤ 100 mA)
+ (L+)
Alarm
– (M)
+ (L+)
Alarm
– (M)
ADDITIONAL FUNCTIONS 7
8008784.14BT | SICK
Subject to change without notice 9
Test input
Test input: the WT24-2B / -V sensors feature a test input (“TI” or “Test” on the connec‐
tion diagram [see "WT24-2Bxxx, WT24-2Vxxx", 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.
If an object is detected, activate the test input (see the connection diagram [see
"WT24-2Bxxx, WT24-2Vxxx", page 7 and see table 7], PNP: TE → M). The send LED is
shut down or no object being detected 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 conditions. See section Fault diagnosis.
Table 7: Test
Test
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
8 Commissioning
1Alignment
WT24-2Xx4x, -2Xx5x: align sensor on object. Select the position so that the red emitted
light beam hits the center of the object. You must ensure that the optical opening (front
screen) of the sensor is completely clear [see figure 3 and figure 4].
WT24-2Xx1x, -2Xx2x: align sensor on object. Select the position so that the infrared light
(not visible) hits the center of the object. The correct alignment can only be detected via
the LED indicators. See figure 3 and figure 4. You must ensure that the optical opening
(front screen) of the sensor is completely clear.
Figure 3: Alignment Figure 4: Alignment 2
2Sensing range
7 ADDITIONAL FUNCTIONS
10 8008784.14BT | SICK
Subject to change without notice
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