EX06caE0 01.2.14 6:19 PM ページ 01
ULTRA-COMPACT PHOTOELECTRIC SENSOR
Mountable with M3 screws!
Isn't this what you wanted?
Conforming to
EMC Directive
UL Recognition
EX06caE0 01.2.14 6:21 PM ページ 1
The Solution to Your Requirements!
Ultra-compact Photoelectric Sensor
Eas
from
2 type
Two types, s
available. Se
Side s
Requirement 1 The sensor should be smaller.
Solution
Miniaturization by using single chip optical IC!
The beam-receiving photodiode and the A/D
conversion circuit have been fabricated on a
single chip optical IC (full custom). Hence, in
spite of its miniature size, it has a performance
and reliability which is equal to or better than
the conventional product.
10.5mm
8.2mm
19mm
Requirement 3 The beam spot should be clearly visible.
Solution
Clear beam spot by using a red LED dot light source!
The emission area of a dot light source is smaller than that of a conventional LED flat light source, and it is possible to design a high power,
narrow beam. Since a red LED dot light source is used, the red beam
spot is clear even at a far place, so that alignment and confirmation of
sensing position is easy. Further, since the thru-beam type, too, incorporates a visible narrow beam, it can also reliably detect small parts,
such as, chip components, lead frames, etc.
Iden
Front sensin
type have ide
ing holes ar
center, the d
Thru
EX-28
Requirement 2 Even though the sensor is small, it
should have enough sensing range.
Solution
Long sensing range realized!
The EX-20 series achieves long distance sensing [thru-beam type: 2m,
retroreflective type: 200mm (when using the attached reflector), diffuse
reflective type: 160mm], despite its miniature size.
Hence, it is usable even on a wide conveyor.
Thru-beam type
Setting
distance
80mm
EX-26
2m long sensing distance
even in this size!
"5mm
spot
"1mm
spot
Retroreflective type
200mm long sensing distance
even in this size!
160mm long sensing distance
even in this size!
It can be tigh
have been p
duct is not da
Side s
Requirement 4 Sensitivity should be adjustable, even
though the sensor is small.
Solution
Diffuse reflective type
Setting
distance
10mm
Mount
Incorporates a sensitivity adjuster even in this size!
The sensor incorporates a sensitivity adjuster
in spite of its miniature size. It is convenient
when you need fine adjustment. Further, the
receiver of the thru-beam, side sensing type
sensor incorporates an operation mode switch
which can change the output operation.
Globall
PNP output ty
able. Of cours
Bright
Bright two-colo
1
EX06caE0 01.2.14 6:22 PM ページ 2
Ease of Use Pursued by Designing
from the User’s Viewpoint!
2 types for suitable mounting
Universal sensor mounting bracket is available
Two types, side sensing type and front sensing type are
available. Select depending on the place of mounting.
Universal sensor mounting bracket (for thru-beam side sensing
type EX-23 only) which can freely adjust the height and the
angle of the sensor is available.
Side sensing type
Front sensing type
Height adjustment
Height adjustment:
15mm
Identical size
Front sensing type of thru-beam type and diffuse reflective
type have identical appearance. Moreover, since the mounting holes are symmetrical with respect to the beam axis
center, the design becomes easy.
Thru-beam type
Angle adjustment
Diffuse reflective type
360 rotation
10mm
10mm
Mounting section reinforced
Mounting spacer for front sensing type is available
It can be tightened with M3 screws. Moreover, metal inserts
have been provided in the mounting holes so that the product is not damaged even in case of excess tightening.
Side sensing type
Front sensing type
Mounting of the front
sensing type is possible from the rear side
by using the mounting spacer.
Mounting spacer
Metal inserts
Mountable with
M3 screws
Globally Usable!
Waterproof IP67
PNP output type which is much in demand in Europe is now available. Of course, it conforms to the EMC directive.
The sensor can be hosed down because of its IP67 construction.
Further, the sensor mounting bracket is also made of stainless steel.
Bright Two-color Indicator
Slit Mask Is Available
Bright two-color indicator has been incorporated in all types.
" 0.5mm round slit mask and 0.53mm rectangular slit mask are
available for both side sensing type and front sensing type.
2
EX06caE0 01.2.14 6:22 PM ページ 3
EX-20
APPLICATIONS
Detecting chip components
Checking protrusion of wafer
Sensing objects from an opening
ORDER GUIDE
Sensing range
Output
EX-21A
NPN open-collector transistor
EX-21A-PN
PNP open-collector transistor
EX-21B
NPN open-collector transistor
EX-21B-PN
PNP open-collector transistor
EX-23
NPN open-collector transistor
EX-23-PN
PNP open-collector transistor
EX-29A
NPN open-collector transistor
EX-29A-PN
PNP open-collector transistor
EX-29B
NPN open-collector transistor
EX-29B-PN
PNP open-collector transistor
EX-22A
NPN open-collector transistor
EX-22A-PN
PNP open-collector transistor
EX-22B
NPN open-collector transistor
EX-22B-PN
PNP open-collector transistor
EX-24A
NPN open-collector transistor
EX-24A-PN
PNP open-collector transistor
EX-24B
NPN open-collector transistor
EX-24B-PN
PNP open-collector transistor
EX-26A
NPN open-collector transistor
EX-26A-PN
PNP open-collector transistor
EX-26B
NPN open-collector transistor
EX-26B-PN
PNP open-collector transistor
EX-28A
NPN open-collector transistor
EX-28A-PN
PNP open-collector transistor
EX-28B
NPN open-collector transistor
EX-28B-PN
PNP open-collector transistor
Dark-ON
Switchable
either Light-ON
or Dark-ON
2m
Light-ON
30 to 200mm
(Note 1)
Dark-ON
Light-ON
5 to 160mm
(Note 2)
Dark-ON
Light-ON
2 to 25mm
(Convergent point: 10mm)
Dark-ON
Light-ON
6 to 14mm
(Convergent point: 10mm)
Dark-ON
Light-ON
45 to 115mm
Dark-ON
Notes: 1) The sensing range of the retroreflective type sensor is specified for the RF-200
reflector. Further, the sensing range is the possible setting range for the reflector.
The sensor can detect an object less than 30mm away. However, if the reflector is
set 100mm or less away, the sensing object should be opaque.
Notes: 2) In case of using this product at a sensing range of 50mm or less, take care that
the sensitivity adjustment range becomes extremely narrow.
Reflector cannot
be placed
in this range
Actual sensing range 200mm
of the sensor
30mm
Setting range
of the reflector
Sensor Reflector
3
Output operation
1m
Side sensing
Side sensing
Front sensing
Side sensing
Side sensing
Model No.
Light-ON
Side sensing
Thru-beam
Retroreflective
Diffuse reflective
Long distance spot light type Small spot light type Diffused light type
Convergent reflective
Narrow-view reflective
Appearance
Front sensing
Type
Reflector
EX06caE0 01.2.14 6:22 PM ページ 4
EX-20
ORDER GUIDE
Package without reflector
EX-29 is also available without the reflector RF-200 when ordering this type, add suffix ‘-Y’ at the end of the model No.
EX.: EX-29-Y is EX-29 without the reflector.
OPTIONS
Round slit mask
Model No.
For front
For side
For side
For front
sensing type sensing type sensing type sensing type
(
Rectangular slit mask
For thru-beam type
sensor only
) (
Round slit mask
For thru-beam type
sensor only
)
Designation
Reflector
For
retroreflective
type sensor only
(
)
Reflector
mounting
bracket
(
• Sensing range: 200mm
• Min. sensing object: "2.6mm
Slit on both sides
• Sensing range: 40mm
• Min. sensing object: "0.5mm
Slit on one side
• Sensing range: 350mm
• Min. sensing object: "3mm
Slit on both sides
• Sensing range: 70mm
• Min. sensing object: "0.5mm
OS-EX20-053
(Slit size 0.53mm)
Slit on one side
• Sensing range: 600mm
• Min. sensing object: "2.6mm
Slit on both sides
• Sensing range: 300mm
• Min. sensing object: 0.53mm
OS-EX20E-053
(Slit size 0.53mm)
Slit on one side
• Sensing range: 800mm
• Min. sensing object: "3mm
(Slit size"0.5mm)
OS-EX20E-05
(Slit size"0.5mm)
• Sensing range: 50 to 400mm
• Min. sensing object: "30mm
MS-RF21-1
Protective mounting bracket for RF-210
Protects the reflector from damage and
maintains alignment.
• Ambient temperature:
25 to50C
• Ambient humidity:
35 to 85% RH
Notes: i) Keep the tape free from
stress. If it is pressed
too much, its capability
may deteriorate.
Notes: ii) Do not cut the tape.
It will deteriorate the
sensing performance.
RF-12
MS-EX20-1
Universal sensor
mounting bracket
[For EX-23(-PN) only]
Mounting spacer
For front sensing
type only
(
)
• OS-EX20-05
• OS-EX20E-05
Rectangular slit mask
Fitted on the front face of the sensor with one-touch.
• OS-EX20-053
• OS-EX20E-053
Reflector
Reflector mounting bracket
• Sensing range: 400mm
Slit on both sides
• Min. sensing object: 0.53mm
RF-210
)
Sensor
mounting
bracket
Fitted on the front face of the sensor with one-touch.
Slit on one side
OS-EX20-05
RF-11
Reflective tape
For
retroreflective
type sensor only
Description
• Sensing range:
70 to 200mm
• RF-210
33.3mm
• Sensing range:
60 to 280mm
Back angled mounting bracket for front sensing type
(The thru-beam type sensor needs two brackets.)
MS-EX20-2
Foot angled mounting bracket for side sensing type
(The thru-beam type sensor needs two brackets.)
MS-EX20-3
L-shaped mounting bracket for front sensing type
(The thru-beam type sensor needs two brackets.)
MS-EX20-4
Back angled mounting bracket for side sensing type
(The thru-beam type sensor needs two brackets.)
MS-EX20-5
It can adjust the height and the angle of the
sensor. (Two brackets are needed.)
MS-EX20-FS
It is used when mounting the front sensing
type from the rear side.
(One set consists of 10 Nos.)
Mounting spacer
Universal sensor mounting bracket
• MS-EX20-FS
• MS-EX20-5
• MS-RF-21-1
11mm
Reflective tape
• RF-11
• RF-12
30mm
0.7mm
0.7mm
30mm
8
mm
25
mm
Sensor mounting bracket
• MS-EX20-1
Material: Stainless steel (SUS304)
Two M3 (length 5mm) pan head
screws [stainless steel (SUS304)]
are attached.
360° rotation
Material: Die-cast zinc alloy
Two M3 (length 12mm)
screws with washers
are attached.
12.8
mm
• MS-EX20-3
• MS-EX20-2
Material: Stainless steel (SUS304)
Two M3 (length 14mm) screws with
washers [stainless steel (SUS304)]
are attached.
• MS-EX20-4
Height adjustment: 15mm
MS-EX20-FS
Two M3 (length 12mm) screws with washers
[stainless steel (SUS304)],
one M3 (length 10mm) hexagon-socket-head
bolt [stainless steel (SUS304)], and
one M3 hexagon nut [stainless steel (SUS304)]
are attached.
Material: Nylon 6
Material: Stainless steel (SUS304)
Two M3 (length 5mm) pan head
screws [stainless steel (SUS304)]
are attached.
Material: Stainless steel (SUS304)
Two M3 (length 14mm) screws with
washers [stainless steel (SUS304)]
are attached.
4
EX06caE0 01.2.14 6:22 PM ページ 5
EX-20
SPECIFICATIONS
Front sensing
Item
Model Light-ON EX-21A(-PN)
No.
Dark-ON EX-21B(-PN)
Side sensing
Side sensing
Front sensing
Side sensing
Side sensing
EX-23(-PN)
(Note 1)
EX-29A(-PN)
EX-22A(-PN)
EX-24A(-PN)
EX-26A(-PN)
EX-28A(-PN)
EX-29B(-PN)
EX-22B(-PN)
EX-24B(-PN)
EX-26B(-PN)
EX-28B(-PN)
5 to 160mm (Note 3)
with 200200mm
white non-glossy
paper
2 to 25mm
(Conv. point: 10mm)
with 5050mm
white non-glossy
paper
6 to 14mm (Conv. point: 10mm) 45 to 115mm
with 5050mm white with 100100mm
non-glossy paper, spot white non-glossy paper,
diameter "1mm at
spot diameter "5mm at
setting distance 10mm setting distance 80mm
(
1m
2m
30 to 200mm
(Note 2)
Sensing object
Min. "2.6mm
opaque object
Setting distance
between emitter
and receiver: 1m
Min. "3mm
opaque object
Setting distance
between emitter
and receiver: 2m
"15mm or more
opaque or
translucent object
(Note 2)
)(
)
)(
Opaque,
translucent or
transparent
object
Hysteresis
Repeatability
(Perpendicular to sensing axis)
Output
0.05mm or less
0.5mm or less
20mA or less
Green LED (lights up under stable light received condition or stable dark condition)
Pollution degree
Continuously variable adjuster
Continuously variable adjuster
3 (Industrial environment)
Protection
Environmental resistance
0.1mm or less 0.05mm or less
0.3mm or less
(Setting distance: 10mm) (Setting distance: 10mm)
Orange LED (lights up when the output is ON) (thru-beam type: located on the receiver)
Green LED (lights up under stable light received condition
or stable dark condition), located on the receiver
Located on the receiver
IP67 (IEC)
25 to 55°C (No dew condensation or icing allowed), Storage: 30 to 70°C
Ambient humidity
35 to 85% RH, Storage: 35 to 85% RH
Sunlight: 10,000#x at the light-receiving face, Incandescent light: 3,000#x at the light-receiving face
EMC
Emission: EN50081-2, Immunity: EN50082-2
1,000V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance
20MΩ or more with 250V DC megger between all supply terminals connected together and enclosure
Vibration resistance
10 to 500Hz frequency, 3mm amplitude (20G max.) in X, Y and Z directions for two hours each
Shock resistance
500m/s2 acceleration (50G approx.) in X, Y and Z directions for three times each
Emitting element
Material
Cable
Cable extension
Weight
Accessories
)
0.5ms or less
Operation mode switch
Red LED (modulated)
Enclosure: Polyethylene terephthalate, Lens: Polyalylate
0.1mm2 3-core (thru-beam type sensor emitter: 2-core) cabtyre cable, 2m long
Extension up to total 50m is possible with 0.3mm2, or more, cable (thru-beam type: both emitter and receiver).
Emitter: 20g approx., Receiver: 20g approx.
Adjusting screwdriver: 1 No.
20g approx.
RF-200 (Reflector): 1 No.
Adjusting screwdriver: 1 No.
Adjusting screwdriver: 1 No.
Notes: 1) Either Light-ON or Dark-ON can be selected by the operation mode switch (located on the receiver).
2) The sensing range and the sensing object of the retroreflective type sensor is specified for the RF-200
reflector. Further, the sensing range is the possible setting range for the reflector. The sensor can detect
an object less than 30mm away. However, if the reflector is set 100mm or less away, the sensing object
should be opaque.
Notes: 3) In case of using this product at a sensing range of 50mm or less, take care that the sensitivity adjustment range becomes extremely narrow.
Adjusting screwdriver: 1 No.
Reflector cannot
be placed
in this range
Actual sensing range 200mm
of the sensor
30mm
Setting range
of the reflector
Sensor Reflector
5
)(
Incorporated
Continuously variable adjuster,
located on the emitter
Voltage withstandability
Opaque,
translucent or
transparent object
Min. "1mm copper
wire at setting
distance 80mm
DC-12 or DC-13
Sensitivity adjuster
Ambient illuminance
Min. "0.1mm
copper wire
Setting
distance: 10mm
)
〈NPN output type〉
〈PNP output type〉
NPN open-collector transistor
PNP open-collector transistor
• Maximum sink current: 50mA
• Maximum source current: 50mA
• Applied voltage: 30V DC or less (between output and 0V)
• Applied voltage: 30V DC or less (between output and V)
• Residual voltage: 1V or less (at 50mA sink current)
• Residual voltage: 1V or less (at 50mA source current)
0.4V or less (at 16mA sink current)
0.4V or less (at 16mA source current)
Response time
Ambient temperature
0.3mm or less
Emitter: 10mA or less, Receiver: 15mA or less
Short-circuit protection
Stability indicator
)(
)(
12 to 24V DC 10% Ripple P-P 10% or less
Utilization category
Operation indicator
(
Min. "0.1mm
copper wire
Setting
distance: 10mm
)(
15% or less of operation distance
Supply voltage
Current consumption
Narrow-view reflective
Diffused light type Small spot light type Long distance spot light type
Side sensing
Sensing range
(
Convergent reflective
Retroreflective Diffuse reflective
Thru-beam
Type
Reflector
EX06caE0 01.2.14 6:22 PM ページ 6
EX-20
I/O CIRCUIT AND WIRING DIAGRAMS
NPN output type
I/O circuit diagram
Wiring diagram
Color code
Sensor circuit
(Brown) V
Color code
D
Load
(Black) Output (Note)
ZD
Tr
50mA max.
(Blue) 0V
Internal circuit
12 to 24V DC
10%
Brown
Load
12 to 24V
10%
Black
(Note)
Users’ circuit
DC
Blue
Note: The thru-beam type sensor emitter does not incorporate the output.
Symbols...D: Reverse supply polarity protection diode
ZD : Surge absorption zener diode
Tr : NPN output transistor
Note: The thru-beam type sensor emitter does not incorporate
the black wire.
PNP output type
I/O circuit diagram
Wiring diagram
Color code
Sensor circuit
(Brown) V
Tr
ZD
Color code
(Black) Output (Note)
D
50mA max.
Load
12 to 24V DC
10%
Brown
(Blue) 0V
12 to 24V
10%
Black (Note)
Load
Internal circuit
DC
Blue
Users’ circuit
Note: The thru-beam type sensor emitter does not incorporate the output.
Symbols...D: Reverse supply polarity protection diode
ZD : Surge absorption zener diode
Tr : PNP output transistor
Note: The thru-beam type sensor emitter does not incorporate
the black wire.
SENSING CHARACTERISTICS (TYPICAL)
EX-21 EX-23
EX-29 EX-22
EX-21
50
50
Excess gain
EX-23
10
5
Parallel deviation
EX-29
10
5
1
0.5
0
1
2
3
4
Setting distance L (m)
5
100
1
0
200
400
600
800
Setting distance L (mm)
0
100
1,000
Emitter
#
EX-21
1
Angular deviation
Setting distance L (m)
100
Excess gain
100
Setting distance L (m)
Correlation between setting distance and excess gain
Thru-beam type
L
Emitter
$
0
40
100
L
Receiver
0.5
Receiver
50
0
50
Left
Center
Right
Operating point ?(mm)
20
0
20
Left
Center
Right
$
Operating angle ( ° )
40
Parallel deviation with rectangular
slit masks (0.53mm)
Parallel deviation with round
slit masks ("0.5mm)
50
1
5
1
0
50
100
150
200
Setting distance L (mm)
250
200
Slit on both
sides
100
Emitter
#
0
20
L
Receiver
10
0
10
Left
Center
Right
Operating point ?(mm)
20
Setting distance L (mm)
EX-22
10
Setting distance L (mm)
Excess gain
800
Slit on one
side
600
Slit on one
side
400
Slit on both
sides
200
0
40
Emitter
#
L
Receiver
20
0
20
Left
Center
Right
Operating point ?(mm)
40
6
EX06caE0 01.2.14 6:22 PM ページ 7
EX-20
SENSING CHARACTERISTICS (TYPICAL)
EX-23
Thru-beam type
Angular deviation
Parallel deviation
Parallel deviation with rectangular
slit masks (0.53mm)
Parallel deviation with round
slit masks ("0.5mm)
400
Slit on one
side
0
100
L
Setting distance L (mm)
Retroreflector
(RF-200)
#
Sensor
10
0
10
Left
Center
Right
Operating point #(mm)
EX-22
L
200
100
0
20
50
0
50
Left
Center
Right
Operating angle $( ° )
100
40
Sensor
angular
deviation
Sensing range L (mm)
Setting distance L (mm)
White nonglossy paper
200200mm
Non-glossy paper
50
Sensor
angular
deviation
Retroreflector
(RF-200)
$
L
4
L
Sensor
Sensor
20
0
20
Left
Center
Right
Operating angle $( ° )
100
L
4
0
50
100
150
White non-glossy paper
side length a (mm)
200
Convergent reflective type
40
30
5050mm
White
non-glossy
paper
#
8mm L
Sensor
7
4
2
0
2
Left
Center
Right
Operating point #(mm)
4
Setting distance L (mm)
Setting distance L (mm)
40
0
20
0
20
Left
Center
Right
Operating point #(mm)
As the object size becomes smaller than
the standard size (white non-glossy paper
200200mm), the sensing range shortens, as
shown in the left graph.
aamm
White non-glossy
paper
5050mm White
non-glossy paper
6mm
30
# L
Sensor
20
10
0
4
2
0
2
Down
Center
Up
Operating point #(mm)
4
L
Receiver
40
40
Sensing field
• Horizontal (left and right) direction • Vertical (up and down) direction
10
0
$ L
Sensor
2
0
2
Left
Center
Right
Operating point #(mm)
EX-24
20
20
Reflector
angular
deviation
Retroreflector
(RF-200)
200
Sensor
0
Receiver
10
0
10
Left
Center
Right
Operating point #(mm)
Emitter
#
Correlation between object size
and sensing range
Black non-glossy paper
Lightness: 6
#
L
Reflector
angular
deviation
200
100
0
20
#
Slit on both
sides
Diffuse reflective type
Sensing field
150
100 Slit on both
sides
0.5
Angular deviation
200
20
0
100
Emitter
Slit on one
side
Retroreflective type
Parallel deviation
100
L
200
Receiver
Receiver
50
0
50
100
Left
Center
Right
Operating point #(mm)
EX-29
0
$
1
300
Setting distance L (m)
Setting distance L (m)
#
Emitter
1
Setting distance L (mm)
Setting distance L (m)
Emitter
1
Setting distance L (mm)
2
2
40
EX06caE0 01.2.14 6:22 PM ページ 8
EX-20
SENSING CHARACTERISTICS (TYPICAL)
EX-24
Convergent reflective type
EX-26
)
Mirror
(
Distance to
convergent point
N1 N2 N3 N4 N5 N6 N7 N8 N9
0
Lightness shown on the left
may differ slightly from the
actual object condition.
Aluminum plate
N8
Bright
Stainless steel plate
(SUS304)
N4
N6
Lightness
White non-glossy
paper
N2
Dark
Black-painted,
non-glossy sheet
Black non-glossy
paper (N5)
0
Distance to
convergent point
Sensing range L (mm)
Sensing range L (mm)
Correlation between material (5050mm) and sensing range
Correlation between lightness and sensing range
80
40
The bars on the graph indicate
The sensing region is representthe sensing range with each
ed by oblique lines in the left figobject. However, there is a variaure. However, the sensitivity 60
30
tion in the sensing range dependshould be set with enough maring on the product. Further, if
gin because of slight variation in
there is a reflective object (conproducts.
40
20
veyor, etc.) in the background of
the sensing object, since it affects
Sensing region
20
10
the sensing, separate it by more
than twice the sensing range
shown in the left graph.
Convergent reflective type
Sensing field
• Horizontal (left and right) direction • Vertical (up and down) direction
20
0
1
1
0.5
0
0.5
Down
Center
Up
Operating point # (mm)
1
Correlation between material (5050mm) and sensing range
15
Sensing region
5
0
N2
Dark
N4
N6
Lightness
N8
Bright
N1 N2 N3 N4 N5 N6 N7 N8 N9
EX-28
200
Setting distance L (mm)
Approach derection of
black non-glossy paper
150
Black non-glossy paper
Lightness: 6
100
)
100100mm
Non-glossy paper
#
4.1mm
4
20
0
(
Lightness shown on the left
may differ slightly from the
actual object condition.
)
(
)
Correlation between object size and sensing range
200
As the object size becomes smaller than the
standard size (white non-glossy paper
100100mm), the sensing range shortens, as
150
shown in the left graph.
100
50
0
(
40
The bars on the graph indicate
the sensing range with each
object. However, there is a variation in the sensing range depending on the product. Further, if
there is a reflective object (conveyor, etc.) in the background of
the sensing object, since it affects
the sensing, separate it by more
than twice the sensing range
shown in the left graph, or adjust
the sensitivity adjuster.
The graph is drawn for the maximum sensitivity setting.
Narrow-view reflective type
Sensing field
White nonglossy paper
The sensing region is represented by oblique lines in the left figure. However, the sensitivity
should be set with enough margin because of slight variation in
products.
The graph is drawn for the
maximum sensitivity setting.
Setting distance L (mm)
10
Distance to
convergent point
Sensing range L (mm)
20
Sensing range L (mm)
Correlation between lightness and sensing range
Mirror
Sensor
0.5
0
0.5
Left
Center
Right
Operating point #(mm)
5
Distance to
convergent point
1
L
Sensor
10
Aluminum plate
0
4.1mm
L
Stainless steel plate
(SUS304)
#
5
#
13.5mm
White non-glossy
paper
5050mm
White nonglossy paper
10
15
Black non-glossy
paper (N5)
15
5050mm
White nonglossy paper
Black-painted,
non-glossy sheet
Setting distance L (mm)
Setting distance L (mm)
20
L
Sensor
2
0
2
4
Left
Center
Right
Operating point # (mm)
50
aamm
White non-glossy
paper
L
Sensor
0
50
100
150
White non-glossy paper
side length a (mm)
200
8
EX06caE0 01.2.14 6:22 PM ページ 9
EX-20
PRECAUTIONS FOR PROPER USE
This product is not a safety sensor. Its use is not
intended or designed to protect life and prevent body
injury or property damage from dangerous parts of
machinery. It is a normal object detection sensor.
Operation mode switch (EX-23 only)
Switch
position
L
Mounting
• Mount using M3 screws. The tightening torque should be
0.5N
m or less.
Front sensing
Side sensing
D
L
D
Description
Light-ON mode is obtained when the operation mode
switch (located on the receiver) is turned fully
clockwise (L side).
Dark-ON mode is obtained when the operation mode
switch (located on the receiver) is turned fully
counterclockwise (D side).
Note: Operation mode switch should be turned fully till it stops.
M3 screws
M3 pan head screws
(Note)
Note: When mounting the front sensing type sensor, use M3 pan head
screws without washers, etc.
• When mounting the front sensing type from the backside, fit
Stability indicator
• The stability indicator (green) lights up when the incident
signal light intensity has sufficient margin with respect to
the operation level.
If the incident light intensity level is such that the stability
indicator lights up, stable sensing can be done without the
light received operation and the light interrupted operation
being affected by a change in ambient temperature or supply voltage.
the mounting spacer MS-EX20-FS and fix with screws.
Operation of stability indicator
0
Sensitivity adjustment (Side sensing type only)
MAX
1
MAX
2
A
B
MAX
3
Optimum position
4
Description
Turn the sensitivity adjuster fully counterclockwise to the minimum sensitivity position
(• mark).
In the light received condition, turn the sensitivity adjuster slowly clockwise and confirm the
point @ where the sensor enters the ‘Light’
state operation.
In the dark condition, turn the sensitivity
adjuster further clockwise until the sensor
enters the ‘Light’ state operation and then
bring it back to confirm point b where the sensor just returns to the ‘Dark’ state operation.
If the sensor does not enter the ‘Light’ state
operation even when the sensitivity
adjuster is turned fully clockwise, this
extreme position is point b.
(
A
B
MAX
)
The position at the middle of points @ and b
is the optimum sensing position.
A
Notes: 1) Use the accessory adjusting screwdriver to turn the adjuster slowly. Turning with excessive strength will damage the adjuster.
2) In case of using EX-22 at a sensing distance of 50mm or less,
take care that the sensitivity adjustment range becomes extremely
narrow.
9
100
0
Setting distance
M3 screws
Sensitivity
adjuster
25% approx.
Incident light intensity (%)
Light interruption
margin
2Align the mounting holes of
the mounting spacer and the
sensor and mount with M3
screws. The tightening torque
should be 0.5N
m or less.
15% approx.
Light interrupted
operation
Output operation
level
Step
Lights up
Incident
light margin
Lights up Lights off
1Fit the mounting spacer on
the sensor.
Light received operation
Output operation
Mounting
spacer (optional)
Mounting method
Wiring
• Make sure to carry out the wiring in the power supply off
condition.
• Verify that the supply voltage variation is within the rating.
• If power is supplied from a commercial switching regulator,
ensure that the frame ground (F.G.) terminal of the power
supply is connected to an actual ground.
• In case noise generating equipment (switching regulator,
inverter motor, etc.) is used in the vicinity of this sensor,
connect the frame ground (F.G.) terminal of the equipment
to an actual ground.
• Do not run the wires together with high voltage lines or
power lines or put them in the same raceway. This can
cause malfunction due to induction.
Others
• Do not use during the initial transient time (50ms) after the
power supply is switched on.
• Avoid dust, dirt, and steam.
• Take care that the sensor does not come in direct contact
with water, oil, grease, or organic solvents, such as, thinner, etc.
• Take care that the sensor is not directly exposed to fluorescent light from a rapid-starter lamp or a high frequency
lighting device, as it may affect the sensing performance.
• If sensors are mounted close together and the ambient
temperature is near the maximum rated value, provide for
enough heat radiation/ventilation.
EX06caE0 01.2.14 6:22 PM ページ 10
EX-20
DIMENSIONS (Unit: mm)
EX-21
EX-23
Sensor
Sensor
Operation indicator (Orange)
(Note 1)
Stability indicator (Green)
(Note)
Beam axis
Operation indicator (Orange)
(Note)
16
4.5
Operation mode switch
(Note 2)
Stability indicator (Green)
(Note 1)
10.5
2.8
8.2
3
Beam axis
9.5
13 19
9
18
6.5
3
3
2-"3.2 mounting holes
2-"3.2 mounting holes
"2.5 cable 2m long
10
2.3
"2.5 cable 2m long
3.5
Note: Not incorporated on the emitter.
EX-29 EX-22
EX-26 EX-28
Note: 1) Not incorporated on the emitter.
2) It is the sensitivity adjuster on the emitter.
EX-24
Sensor
Sensor
Operation indicator (Orange)
Sensitivity adjuster
10
2.8
8.2
Beamreceiving part
Beamemitting part
Stability indicator (Green)
Beam-emitting part
12.3
Stability indicator (Green)
Beam-receiving part
16
4.5
5
Operation indicator (Orange)
3
11
16 22
5
9
5.5
18
3
3
2-"3.2 mounting holes
2-"3.2 mounting holes
5.3
RF-200
2.3
"2.5 cable 2m long
10
"2.5 cable 2m long
Reflector (Accessory for the retroreflective type sensor)
MS-RF21-1
Reflector mounting bracket for RF-210 (Optional)
23
5.5
6.5
9.6
1.5
"36 50
4.6
"2.3
Material: Stainless steel (SUS304)
17.5
(13)
13
7.75
2.3
"3.2 mounting hole
Two M3 (length 12mm) screws with
washers are attached.
30
20
16
3.5
10
3.5
3.2
Material: Acrylic (Reflector)
ABS (Base)
R7.5
"25
t 1.2
12.5
46
25
13
10
EX06caE0 01.2.14 6:22 PM ページ 11
EX-20 SERIES ULTRA-COMPACT PHOTOELECTRIC SENSOR
MS-EX20-1
MS-EX20-2
Sensor mounting bracket (Optional)
Sensor mounting bracket (Optional)
1
t 1.5
3-M30.5
2
3.5
8
10.5
2.5
3.2
2
5
3
13
16
7.5
29.5
3.2
4-M30.5
3.2
t 1.5
16
14
R13
2
2.5
2.5
5
11
10
12.5
10
3.2
9 19
12
14.5
34
2
Material: Stainless steel (SUS304)
Material: Stainless steel (SUS304)
3 16
Two M3 (length 5mm) pan head
screws [stainless steel (SUS304)]
are attached.
t 1.2
MS-EX20-3
MS-EX20-4
Sensor mounting bracket (Optional)
Two M3 (length 14mm) screws with
washers [stainless steel (SUS304)]
are attached.
Sensor mounting bracket (Optional)
1
3-M30.5
2
t 1.5
2.5
13
16
14
9
20
4-M30.5
3.2
2
10
t 1.2
13
R13
8
19 12
9
2.5
2.5
6.5
3.2
3
t 1.5
10
17
14
3.2
2
Material: Stainless steel (SUS304)
Two M3 (length 5mm) pan head
screws [stainless steel (SUS304)]
are attached.
MS-EX20-5
Material: Stainless steel (SUS304)
Two M3 (length 14mm) screws with
washers [stainless steel (SUS304)]
are attached.
12 23 14.5
5
3
3
8
Universal sensor mounting bracket (Optional)
1
Assembly dimensions
Mounting drawing with the
receiver of EX-23
2
2
2.6
2.6
3.2
"7
6
2.2
4.1
19.5
22.5
1.5
23.5
9.5
16
25.5
3
3
8.5
15.5
5.5
13 19.5 22.5
2-M30.5
7
30
2-"3.2
mounting
holes
12
6
14
5.5
6.5
Pioneer in Sensor Systems
SUNX Limited
2431-1 Ushiyama-cho, Kasugai-shi,
Aichi, 486-0901, Japan
Phone: +81-(0)568-33-7211
FAX: +81-(0)568-33-2631
2
2-"3.3 thru-holes
19.5
Material: Nylon 6
"7
2-"3.2
mounting holes
30
12 15
6
14
8.5
19.5
Note: This is the adjustable range of the movable part.
All information is subject to change without prior notice.
Internet home page
http://www.sunx.co.jp/
Overseas Sales Dept.
Phone: +81-(0)568-33-7861
FAX: +81-(0)568-33-8591
Printed on 100% recycled paper
PRINTED IN JAPAN
(15) (Note)
13
25.5
4
4.5
"7
Material: Die-cast zinc alloy
Two M3 (length 12mm) screws with washers [stainless steel
(SUS304)] , one M3 (length 10mm) hexagon-socket-head bolt,
and one M3 hexagon nut [stainless steel (SUS304)] are attached.
2.2
3
(6.7) 3
(7.3)
Beamreceiving part
8
15
1.5
12
3.2
No. CE-EX20-A-3 November, 2000
