SICK WTB4F User manual

OPERATING INSTRUCTIONS
WTB4F
Miniature photoelectric sensors

OPERATING INSTRUCTIONS
WTB4FP MultiSwitch
Miniature photoelectric sensors
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Described product
W4F
WTB4FP MultiSwitch
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 modi‐
fication, abridgment or translation of this document is prohibited without the express
written 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
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Subject to change without notice 3

Contents
1 General safety notes......................................................................... 5
2 Notes on UL approval........................................................................ 5
3 Intended use...................................................................................... 5
4 Operating elements and status indicators.................................... 5
5 Mounting............................................................................................. 6
6 Electrical installation........................................................................ 6
7 Commissioning.................................................................................. 7
7.1 Alignment.................................................................................................. 7
7.2 Check the application conditions:........................................................... 8
7.3 Setting....................................................................................................... 9
7.4 Process data structure............................................................................. 11
8 Troubleshooting................................................................................. 11
9 Disassembly and disposal............................................................... 11
10 Maintenance...................................................................................... 12
11 Technical specifications................................................................... 12
11.1 Dimensional drawings.............................................................................. 13
CONTENTS
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1 General safety notes
■Read these operating instructions before commissioning the device.
■
Connection, mounting and configuration of the device must only be carried
out by qualified personnel.
■
2006/42/EC
NO
SAFETY
This device does not constitute a safety component as defined in the
Machinery Directive.
■
When commissioning the device, ensure adequate protection against mois‐
ture, contamination and UV radiation (sunlight).
■These operating instructions contain information required during the life cycle of
the photoelectric sensor.
2 Notes on UL approval
The device shall be supplied from an isolating transformer having a secondary overcur‐
rent protective device that complies with UL 248 to be installed in the field rated either:
a) max 5 amps for voltages 0 ~ 20 V (0 ~ 28.3 V peak), or
b) 100 / Vp for voltages of 20 ~ 30 V (28.3 ~ 42.4 V peak).
Alternatively, they can be supplied from a Class 2 power supply.
UL Environmental Rating: Enclosure type 1
3 Intended use
The WTB4FP MultiSwitch is an opto-electronic photoelectric background suppression
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.
1
34
2
1BluePilot blue: operating mode, Switching state QL1, QL2
2Teach-Button: adjusting the sensing range
3LED indicator yellow: status of received light beam
4LED indicator green: supply voltage active
GENERAL SAFETY NOTES 1
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5 Mounting
Mount the sensor using a suitable mounting bracket (see the SICK range of acces‐
sories).
Figure 1: Alignment of the sensor relative to the object direction
Note the sensor’s maximum permissible tightening torque of < 0,4 Nm.
Note the preferred direction of the object relative to the sensor, cf. see figure 1, page 6.
6 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: Pin assignment
– Cable: Wire color
Only apply voltage/switch on the voltage supply once all electrical connections have
been established.
Explanations on connection diagram.
BN = brown
WH = white
BU = blue
BK = black
MF (pin 2 configuration) = external input, teach-in, switching signal
QL1/C = switching output, IO-Link communication
Test = Test input
UB: 10 ... 30 V DC
Table 1: Electrical connection
x4 x2 xH
1 = BN
2 = WH
3 = BU
4 = BK
12
4 3
2
1
4
3
0.14 mm2
AWG26
5 MOUNTING
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Table 2: DC
WTx4Fx- xx16xxxxA00 xx16xxxxA01-
A99
xx16D xx16R xx16x
1 = BN + (L+)
2 = WH MF
3 = BU - (M)
4 = BK QL1 / C
Default: MF QL2 QL2 www.sick.com
8022709
Default:
QL1 / C
QL1 QL1 www.sick.com
8022709
QL1 QL2
QL1/L2
Push-
pull
(≤
100 mA
)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
QL1 / L2
Push-
pull
(≤
100 mA
)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
7 Commissioning
7.1 Alignment
Alignment
Align the sensor with the 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 2].
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Figure 2: Alignment
Figure 3: Alignment
7.2 Check the application conditions:
Sensing range
WTB4FP MultiSwitch are photoelectric proximity sensors with background suppression.
Depending on the remission of the object to be detected, and perhaps the background
behind it, a minimum distance (y) between the set sensing range (x) and the back‐
ground should be maintained.
Check the application conditions:
Adjust the sensing range and distance to the object or background as well as the
radiance capability of the object according to the corresponding diagram (x = sensing
range, y = minimum distance between set sensing range and background [white, 90%])
Radiance factor: 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 as follows:
Example: x = 100 mm, y = 4 mm. That is, the background (white, 90%) is suppressed at
a distance of > 4 mm from the sensor.
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0
20
(0.79)
10
(0.39)
40
(1.57)
30
(1.18)
50
(1.97)
80
(3.15)
40
(1.57)
120
(4.72)
160
(6.30)
200
(7.87)
240
(9.45)
0
y
x
y
x
Minimum distance in mm (y) between the set sensing
range and white background (90 % remission)
Example:
Safe suppression of the background
White background (90 %)
Black object (6 % remission)
Set sensing range x = 120 mm
Needed minimum distance to white
background y = 7 mm
Distance in mm (inch)
Recommended sensing range for
the best performance
60
(2.36)
90%/90%
18%/90%
1
6%/90%
33
2
Figure 4: Characteristic line
0
815
715
4 220
Distance in mm (inch)
210
215
1
2
3
80
(3.15)
40
(1.57)
120
(4.72)
160
(6.30)
200
(7.87)
240
(9.45)
15
D
C
A B
BluePilot
E
F
Figure 5: bar graph
ASensing range min. in mm
BSensing range max. in mm
CViewing range
DAdjustable switching threshold for fore‐
ground suppression
ESensing range indicator
FTeach-Turn adjustment
0
Distance in mm (inch)
Dimensions in mm (inch)
4
(0.16)
6
(0.24)
–6
(–0.24)
–4
(–0.16)
0
2
(0.08)
–2
(–0.08)
10
(0.39)
220
(8.66)
80
(3.15)
40
(1.57)
120
(4.72)
160
(6.30)
200
(7.87)
240
(9.45)
130
(5.12)
Recommended sensing range for
the best performance
Figure 6: Light spot size
7.3 Setting
Sensing range adjustment
WTB4Fx-xxxxxx2xAxx
1 7
26
3 4 5
4 operating mode: 2 switching points
1 - 3 QL1 active
5 - 7 QL2 active
7 Distance value via Io-Link
1 - 6 off
WTB4Fx-xxxxxx50Xxx2
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1...3 sec.
QL1
1...3 sec.
QL2
QL1+QL2
Figure 7: WTB4F, adjustment of the sensing range using a teach-turn adjustment
7 COMMISSIONING
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