Described product
WTB26
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
2
8020354.14CS | SICK
Subject to change without notice
Contents
1 Safety information............................................................................ 5
1.1 General safety notes................................................................................ 5
1.2 Notes on UL approval............................................................................... 5
2 Intended use...................................................................................... 5
3 Operating and status indicators...................................................... 5
4 Mounting............................................................................................. 6
5 Electrical installation........................................................................ 6
6 Additional functions.......................................................................... 8
7 Commissioning.................................................................................. 9
8 Process data structure..................................................................... 14
9 Troubleshooting................................................................................. 14
10 Disassembly and disposal............................................................... 15
11 Maintenance...................................................................................... 15
12 Technical data.................................................................................... 16
12.1 Dimensional drawings.............................................................................. 17
1 Safety information............................................................................ 5
1.1 General safety notes................................................................................ 5
1.2 Notes on UL approval............................................................................... 5
2 Intended use...................................................................................... 5
3 Operating and status indicators...................................................... 5
4 Mounting............................................................................................. 6
5 Electrical installation........................................................................ 6
6 Additional functions.......................................................................... 8
7 Commissioning.................................................................................. 9
8 Process data structure..................................................................... 14
9 Troubleshooting................................................................................. 14
CONTENTS
8020354.14CS | SICK
Subject to change without notice
3
10 Disassembly and disposal............................................................... 15
11 Maintenance...................................................................................... 15
12 Technical data.................................................................................... 16
12.1 Dimensional drawings.............................................................................. 17
4
8020354.14CS | SICK
Subject to change without notice
1 Safety information
1.1 General safety notes
■
Read the operating instructions before commissioning.
■
Connection, mounting, and configuration may only be performed by trained
specialists.
■
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.
1.2 Notes on UL approval
The device must be supplied by a Class 2 source of supply.
UL Environmental Rating: Enclosure type 1
2 Intended use
The WTB26 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.
3 Operating and status indicators
Photoelectric proximity sensor with background suppression.
WTB26x-
-xxxxxx1x
-xxxxxx2x
-xxxxxx3x
-xxxxxxx0
2
3
4
1
2
1
4
3
SAFETY INFORMATION 1
8020354.14CS | SICK
Subject to change without notice
5
WTB26x-
-xxxxxx1x
-xxxxxx2x
-xxxxxx3x
-xxxxxxx1
2
1
4
3
6
2
1
3
4
6
-xxxxxxx2
2
1
4
3
5
2
1
3
4
5
1
BluePilot blue: sensing range display
2
Press-turn element / Potentiometer / Teach-Button: adjusting the sensing range
3
LED indicator yellow: status of received light beam
4
LED indicator green: supply voltage active
5
Press-turn element: time function adjustment
6
Teach pushbutton: adjustment of light/dark switching
4 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 < 1,3 Nm.
Note the preferred direction of the object relative to the sensorsee figure 10, figure 11.
5 Electrical installation
The sensors must be connected in a voltage-free state. The following information must
be observed, depending on the connection type:
– Male connector connection: Note pin assignment.
– Cable: wire color
Only supply/switch on the voltage once all electrical connections have been estab‐
lished.
Explanations on connection diagram (table 1 - table 4).
Alarm = alarm output
Health = alarm output
MF (pin 2 configuration) = external input, teach-in, switching signal
Q
L1
/C = switching output, IO-Link communication
Test = test input
U
B
: 10 ... 30 V DC
4 MOUNTING
6
8020354.14CS | SICK
Subject to change without notice
Table 1: Connections
Wxx26x- x4 xH x5 xI
1 = BN
2 = WH
3 = BU
4 = BK
5= GY
1
2
4 3
0.14 mm
2
AWG26
1
2
5
4 3
0.14 mm
2
AWG26
Wxx26x- x9 xB
1 = BN
2 = BU
3 = not connected
4 = BK
5= WH
6 = GY
7 = not connected
3 4
1
2 5
6
I
N
= 4 A
3
7
2
1
6
5
4
I
N
= 6 A
Table 2: DC
WTB26 -24161xxxA00
-34161xxxA00
-1x161xxxA0
0
-24162xxxA0
0
-34162xxxA0
0
-1x162xxxA0
0
-2416xxxxA01-
A99
-3416xxxxA01-
A99
1 + (L+)
2 MF
3 - (M)
4 Q
L1
/C
Default: MF
Q Q
Q Q www.sick.com
8022709
Default:
Q
L1
/C
Q Q
Q Q
www.sick.com
8022709
1
2
4 3
1 = BN
2 = WH
3 = BU
4 = BK
0.14 mm
2
AWG26
1
2
4 3
1 = BN
2 = WH
3 = BU
4 = BK
0.14 mm
2
AWG26
1
2
4 3
Table 3: Push / pull
ELECTRICAL INSTALLATION
5
8020354.14CS | SICK
Subject to change without notice
7
Q
Push-pull
(≤ 100 mA)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
Q
Push-pull
(≤ 100 mA)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
6 Additional functions
Alarm
Alarm output: The sensor (WTB26) features a pre-failure notification output (“Alarm” in
connection diagram [see table 7]), which issues a notification if the sensor is only ready
for operation to a limited extent. The LED indicator 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).
Health output: The sensor (WTB26) features a pre-failure notification output (“Health”
in connection diagram [see table 7]), which issues a notification if the sensor is only
ready for operation to a limited extent or the cable has been interrupted. Possible
causes: Sensors are contaminated, sensors are out of alignment, cable is damaged. In
the good state: HIGH (1), if excessively contaminated or in the event of cable interrup‐
tion LOW (0). The LED indicator flashes in this case.
Test input
Test input: The WTB26 sensors feature a test input (“TI” or “Test” on the connection
diagram [see table 2, table 7 and table 4]), which can be used to switch the sender off
and, therefore, check that the sensor is functioning correctly: If female cable connec‐
tors with LED indicators are used, you have to ensure that the TI is assigned accord‐
ingly.
If an object is detected, activate the test input (see the connection diagram[see table 2,
table 7 and table 4]). The send LED is shut down or no object being detected is simu‐
lated. Refer to table 4 to check the function. If the switching output fails to behave in
accordance with table 4, check the application conditions. See section Fault diagnosis.
Table 4: Test
Test → M Test → L+
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
6 ADDITIONAL FUNCTIONS
8
8020354.14CS | SICK
Subject to change without notice
7 Commissioning
1 Alignment
WTB26 P: Align sensor on object. Select the position so that the red emitted light beam
hits the center of the object. It is important to ensure that the optical opening (front
screen) of the sensor is completely clear [see figure 1, figure 2].
WTB26 I: 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 indi‐
cators,see table 2, table 7 and table 3. You must ensure that the optical opening (front
screen) of the sensor is completely clear.
Figure 1: Alignment 1 Figure 2: Alignment 2
2 Sensing range
WTBXX are photoelectric proximity sensors with background suppression. Depending on
the remission of the object to be detected, and perhaps the background behind it, a mini‐
mum distance (y) between the set sensing range (x) and the background is to be main‐
tained.
Check the application conditions: Adjust the sensing range and distance to the object or
background as well as the remission capability of the object according to the correspond‐
ing diagram [see figures 5 and 6] (x = sensing range, y = minimum distance between set
sensing range and background [white, 90%]) Remission: 6% = black 1, 18% = gray 2,
90% = white 3 (referring to standard white as per DIN 5033). We recommend that the
adjustment be performed with an object of low remission.
The minimum distance (= y) for the background suppression can be determined from the
diagram [figure 3 1] as follows:
Example: x = 600 mm, y = 40 mm. That is, the background (white, 90%) is suppressed at a
distance of > 40 mm from the sensor.
0
40
20
140
120
100
80
60
180
160
200
400
(15.75)
800
(31.5)
2,000
(78.74)
1,200
(47.24)
1,600
(62.99)
0
1
2
3
WTB26P-xxxxx1xx
18%/90%
6%/90%
90%/90%
y
x
yx
Minimum distance in mm (y) between the set sensing
range and background (white, 90%)
white background (90%)
Example:
Sensing range on black, 6%,
x = 600 mm, y = 40 mm
Distance in mm (inch)
Figure 3: Characteristic line 1, WTB26P-xxxxx1xx, red
light
1
Sensing range on black, 6% remission
180
(7.09)
400
(15.75)
A
800
(31.5)
1,200
(47.24)
1,600
(62.99)
0
1
2
3
BluePilot:
30
Adjustment range
Distance in mm (inch)
Sensing range
indicator (blue LED)
Teach-Turn
adjustment
A = Detection distance (depending on object remission)
800
100
/
180
1,000
1,600
75
/
180
180
COMMISSIONING 7
8020354.14CS | SICK
Subject to change without notice
9
2
Sensing range on gray, 18% remission
3
Sensing range on white, 90% remission
0
100
(3.94)
400
(15.75)
200
(7.87)
300
(11.81)
500
(19.69)
600
(23.62)
800
(31.5)
1,600
(62.99)
2,400
(94.49)
3,200
(125.98)
0
1
2
3
WTB26P-xxxxx4xx
18%/90%
6%/90%
90%/90%
y
x
yx
white background (90%)
Example:
Sensing range on black, 6%,
x = 800 mm, y = 120 mm
Distance in mm (inch)
Minimum distance in mm (y) between the set sensing
range and background (white, 90%)
Figure 4: Characteristic line 2, WTB26 P-xxxxx4 xx, red
light
1
2
3
3,000
180
1,400
180
1,000
180
100
/
75
/
30
/
Distance in mm (inch)
180
(7.09)
0
A
Adjustment range
BluePilot:
Sensing range
indicator (blue LED)
Teach-Turn
adjustment
A = Detection distance (depending on object remission)
800
(31.5)
1,600
(62.99)
2,400
(94.49)
3,200
(125.98)
0
50
150
100
200
250
400
(15.75)
800
(31.5)
1,200
(47.24)
1,600
(62.99)
2,000
(78.74)
0
1
2
3
WTB26I-xxxxx1xx
18%/90%
6%/90%
90%/90%
y
x
yx
white background (90%)
Example:
Sensing range on black, 6%,
x = 800 mm, y = 85 mm
Distance in mm (inch)
Minimum distance in mm (y) between the set sensing
range and background (white, 90%)
Figure 5: Characteristic line 3, WTB26 I-xxxxx1 xx,
infrared light
180
(7.09)
500
(19.69)
A
1,000
(39.37)
1,500
(59.06)
2,000
(78.74)
0
1
2
3
BluePilot:
100
/
180
1,000
1,400
30 2,000
Adjustment range
Distance in mm (inch)
Sensing range
indicator (blue LED)
Teach-Turn
adjustment
A = Detection distance (depending on object remission)
75
/
180
180
0
100
(3.94)
200
(7.87)
300
(11.81)
800
(31.5)
1,600
(62.99)
2,400
(94.49)
3,200
(125.98)
0
2
WTB26I-xxxxx4xx
6%/90%
90%/90%
y
x
yx
white background (90%)
Example:
Sensing range on black, 6%,
x = 1,000 mm, y = 190 mm
Distance in mm (inch)
Minimum distance in mm (y) between the set sensing
range and background (white, 90%)
400
(15.75)
350
(13.78)
250
(9.84)
150
(5.91)
50
(1.97)
1
3
18%/90%
Figure 6: Characteristic line 4, WTB26 I-xxxxx4 xx,
infrared light
1
2
3
3,000
180
1,800
180
1,200
180
100
/
75
/
30
/
Distance in mm (inch)
180
(7.09)
0
A
Adjustment range
BluePilot:
Sensing range
indicator (blue LED)
Teach-Turn
adjustment
A = Detection distance (depending on object remission)
800
(31.5)
1,600
(62.99)
2,400
(94.49)
3,200
(125.98)
3 Sensing range setting
7 COMMISSIONING
10
8020354.14CS | SICK
Subject to change without notice
WTB26 x-xxxxxx2 xAxx with Teach-Turn adjustment:
The sensing range is adjusted by pressing the teach-in button (approx. 1-3 sec.). Depend‐
ing on the requirements, the potentiometer can be used for fine-tuning (without pressing
the teach-in button).
Clockwise rotation: sensing range increased.
Counterclockwise rotation: sensing range reduced.
The sensing range can also be adjusted using just the potentiometer. We recommend plac‐
ing the sensing range in the object, e.g. see figure 7. Once the sensing range has been
adjusted, the object is removed from the path of the beam, which causes the background
to be suppressed and the switching output to change (see table 2, table 7, table 3).
1...3 sec.
1
2
3
Figure 7: WTB26 x-xxxxxx2 xAxx, adjusting the sensing range with press-turn element
COMMISSIONING
7
8020354.14CS | SICK
Subject to change without notice
11
WTB26 x-xxxxxx1 xAxx with Potentiometer:
The sensing range is adjusted with the potentiometer.
Clockwise rotation: sensing range increased.
Counterclockwise rotation: sensing range reduced.
We recommend placing the sensing range in the object, e.g. see figure 8. Once the sensing
range has been adjusted, the object is removed from the path of the beam, which causes
the background to be suppressed and the switching output to change (see table 2, table 7,
table 3).
1
2
3
Figure 8: WTB26 x-xxxxxx1 xAxx, adjusting the sensing range with potentiometer
7
COMMISSIONING
12
8020354.14CS | SICK
Subject to change without notice
WTB26 x-xxxxxx3 xAxx with teach-in button:
The sensing range is adjusted by pressing the teach-in button (approx. 1-3 sec.). We recom‐
mend placing the sensing range in the object, e.g. see figure 9. Once the sensing range
has been adjusted, the object is removed from the path of the beam, which causes the
background to be suppressed and the switching output to change (see table 2, table 7,
table 3).
1...3 sec.
1
2
Figure 9: WTB26 x-xxxxxx3 xAxx, adjusting the sensing range with teach-in button
4 Time function setting
1
0
T1
T2
M
T4
T3
t
t
t t t
t
t t t t
t t t
t
t
t t
Input signal
0
T1
T2
T3
T4
M = Manual (specific setting via IO-Link)
1 ms 30.000 ms
2
COMMISSIONING 7
8020354.14CS | SICK
Subject to change without notice
13
5 Setting light/dark switching
1
L
D
M
L light switching
D Dark switching
M manual (specific setting via IO-Link)
8 Process data structure
Process data structure (Version 1.1)
A00 A70 A71 A72 A73 A75
IO-Link V1.1
Process
data
2 bytes 4 bytes
Byte 0: bits 15... 8
Byte 1: bits 7... 0
Byte 0: bits 31...
24
Byte 1: bits 13...
16
Byte 2: bits 15...
8
Byte 3: bits 7... 0
Bit 0 / Data
type
Q
L1
/ Boolean
Bit 1 / Data
type
Q
L2
/ Boolean Qint.1 /
Boolean
Q
L2
/
Boolean
Qint.1 / Boolean
Bit... /
Descrip‐
tion / Data
type
2 ...15 /
[empty]
2 ...15 /
[time mea‐
surement
value] /
UInt 14
2 … 15 /
[counter
value] /
UInt 14
2 … 15 /
[length /
speed
measure‐
ment] /
SInt14
2 / Qint.
1 /
Boolean
2 … 7 / [empty]
Bit... /
Descrip‐
tion / Data
type
3 … 15 /
[time mea‐
surement
value] /
UInt13
8 … 31 / [carrier
load] / UInt 24
9 Troubleshooting
The Troubleshooting table indicates measures to be taken if the sensor stops working.
LED indicator/fault pattern Cause Measures
Green LED flashes IO-Link communication None
8 PROCESS DATA STRUCTURE
14
8020354.14CS | SICK
Subject to change without notice
LED indicator/fault pattern Cause Measures
Switching outputs do not
behave in accordance with
table 3
1. IO-Link communication
2. Change of the configuration
3. Short-circuit
1. None
2. Adjustment of the configura‐
tion
3. Check electrical connections
Yellow LED lights up, no object
in the path of the beam
The sensing range distance is
too large
Reduce the sensing range
Object is in the path of the
beam, yellow LED does not
light up
Distance between the sensor
and the object is too long or
sensing range is set too short
Increase the sensing range
10 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.
11 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.
DISASSEMBLY AND DISPOSAL 10
8020354.14CS | SICK
Subject to change without notice
15
12 Technical data
WTB26P-xxxxx1 WTB26P-xxxxx4 WTB26I-xxxxx1 WTB26I-xxxxx4
Sensing range max. 30 mm ...
1,600 mm()
1)
30 mm ... 3,000
mm
1)
30 mm ... 2,000
mm
1)
30 mm ... 3,000
mm
1)
Light spot diameter/distance Ø 7 mm (700 mm)
(type)
Ø 7 mm (700 mm)
(type)
Ø 14 mm (1,000
mm)
Ø 14 mm (1,000
mm)
Supply voltage U
B
DC 10 ... 30 V DC 10 ... 30 V DC 10 ... 30 V DC 10 ... 30 V
Ripple ≤ 5 V
SS
≤ 5 V
SS
≤ 5 V
SS
≤ 5 V
SS
Current consumption ≤ 30 mA
2)
< 50 mA
3)
≤ 30 mA
2)
< 50 mA
3)
≤ 30 mA
2)
< 50 mA
3)
≤ 30 mA
2)
< 50 mA
3)
Output current I
max.
≤ 100 mA ≤ 100 mA ≤ 100 mA ≤ 100 mA
Max. response time 500 µs
4)
2.5 ms
4)
500 µs
4)
2.5 ms
4)
Switching frequency 1000 Hz
5)
200 Hz
5)
1000 Hz
5)
200 Hz
5)
Enclosure rating
6)
see table 1:
x4, xH, x5, xI: IP66,
IP67, IP69
7)
x9, xB: IP65
see table 1:
x4, xH, x5, xI: IP66,
IP67, IP69
7)
x9, xB: IP65
see table 1:
x4, xH, x5, xI: IP66,
IP67, IP69
7)
x9, xB: IP65
see table 1:
x4, xH, x5, xI: IP66,
IP67, IP69
7)
x9, xB: IP65
Protection class III III III III
Circuit protection A, B, C, D
8)
A, B, C, D
8)
A, B, C, D
8)
A, B, C, D
8)
Ambient operating temperature –40 °C ... +60 °C
9)
–40 °C ... +60 °C
9)
–40 °C ... +60 °C
9)
–40 °C ... +60 °C
9)
1)
Object with 90 % remission (based on standard white DIN 5033)
2)
16 VDC to 30 VDC, without load
3)
10 VDC to 16 VDC, without load
4)
Signal transit time with resistive load in switching mode. Deviating values possible in COM2 mode.
5)
With a light/dark ratio of 1:1 in switching mode. Deviating values possible in IO-Link mode.
6)
Pursuant to EN 60529
7)
Replaces IP69 K pursuant to ISO 20653: 2013-03
8)
A = U
B
-connections reverse polarity protected
B = inputs and output reverse-polarity protected
C = Interference suppression
D = outputs overcurrent and short-circuit protected
9)
Do not bend cables below 0°C.
12 TECHNICAL DATA
16
8020354.14CS | SICK
Subject to change without notice
12.1 Dimensional drawings
7,1
8,1
10,8
25
38,8
21
6,4
12,9
48,1
40
10
44,2
Ø 5,2
24,6
82,2
70
Ø 5,2
76,5
8,1
82,5
53,3
7,3
2532,4
1
2
3
5
4
4
89
6
7
Figure 10: Dimensional drawing 1, cable
1
Preferred direction of the target
object
2
Center of optical axis, sender
3
Center of optical axis, receiver
4
Fixing hole, Ø5.2 mm
5
Connection
6
LED indicator green: Supply voltage
active
7
LED indicator yellow: Status of
received light beam
8
Press-turn element: Adjusting the
sensing range
9
BluePilot blue: Sensing range dis‐
play
7,1
8,1
10,8
25
396,3
M12
48,1
40
44,219,7
Ø 5,2
24,6
82,2
70
Ø 5,2
17
7,9
76,5
82,5
2532,4
1
2
3
5
4
4
53,3
63,9
21
89
6
7
Figure 11: Dimensional drawing 2, male
connector
TECHNICAL DATA 12
8020354.14CS | SICK
Subject to change without notice
17
Beschriebenes Produkt
WTB26
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
8020354.14CS | SICK
Subject to change without notice
19
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