333
Related Information
FIBER
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Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
Conforming to
EMC Directive
Recognition
(Excluding 5 m cable length type)
PNP output
type available
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.
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 ne
adjustment. Further, the receiver of the
thru-beam, side sensing type sensor
incorporates an operation mode switch
which can change the output operation.
10.5 mm
0.413 in
8.2 mm
0.323 in
19 mm
0.748 in
Long sensing range
The EX-20 series achieves long distance sensing [thru-beam
type: 2 m 6.562 ft, retroreective type: 200 mm 7.874 in (when
using the attached reector), diffuse reective type: 160 mm
6.299 in], despite its miniature size.
Hence, it is usable even on a wide conveyor.
BASIC PERFORMANCE
Clear beam spot using red LED dot light source
The emission area of a dot light source is smaller than that
of a conventional LED at 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 conrmation 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.
Setting
distance:
80 mm
3.150 in
Setting
distance:
10 mm
0.394 in
ø5 mm
ø0.197 in
spot
ø1 mm
ø0.039 in
spot
EX-26□
EX-28□
2 m 6.562 ft
200 mm
7.874 in
160 mm
6.299 in
Thru-beam type
Retroreective type
Diffuse reective type
Ultra-compact Photoelectric Sensor Amplier Built-in
EX-20 SERIES Ver.2
Miniature-sized and still mountable with M3 screws
Certified
(Some models only)
■
General terms and conditions ........... F-17 ■Sensor selection guide ................. P.283~
■
Glossary of terms / General precautions ... P.1359~ / P.1405
■Korea’s S-mark…………… ........... P.1410
panasonic-electric-works.net/sunx
Ver.2
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
334
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
FIBER
SENSORS
LASER
SENSORS
PHOTOELECTRIC
SENSORS
MICRO
PHOTOELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASUREMENT
SENSORS
STATIC CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN MACHINE
INTERFACES
ENERGY CONSUMPTION
VISUALIZATION
COMPONENTS
FA COMPONENTS
MACHINE VISION
SYSTEMS
UV CURING
SYSTEMS
APPLICATIONS
Detecting chip components Checking protrusion of wafer
Sensing objects from an opening
Waterproof IP67 (IEC)
Incorporated an inverter countermeasure circuit
The sensor can be hosed down because of its IP67
construction. Further, the sensor mounting bracket is
also made of stainless steel.
The EX-20 series become signicantly stronger against
inverter light and other extraneous light.
ENVIRONMENTAL RESISTANCE
Electric power saving
The EX-20 series achieves reductions in power
consumption of up to 65 %. These sensors contribute to
environmental friendliness.
BASIC PERFORMANCE
Note: However, take care that if it is exposed to water splashes during
operation, it may detect a water drop itself.
*Effective from production
in April 2011.
*Effective from production in April 2011.
Identical size
Front sensing type of
thru-beam type and
diffuse reective
type sensors have
identical appearance.
Moreover, since the
mounting holes are
symmetrical with
respect to the beam
axis center, the
design becomes easy.
MOUNTING
Mounting section reinforced
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.
Universal sensor mounting bracket is available
Universal sensor mounting bracket MS-EXL2-4 (for
EX-22/23/26/28/29□) and MS-EX20-5 (for EX-23□ only)
which can freely adjust the height and the angle of the
sensor is available.
OPTIONS
0.591 in
Height adjustment:
15 mm
0.591 in
Height adjustment
360° rotation
Angle adjustment
Mounting spacer for front sensing type is available
Mounting of the
front sensing type
is possible from
the rear side by
using the mounting
spacer.
Mounting spacer
Slit mask is available
ø0.5 mm ø0.020 in round slit mask and 0.5 × 3 mm
0.020 × 0.118 in rectangular slit mask are available for
both side sensing type and front sensing type sensors.
10 mm
0.394 in
10 mm
0.394 in
Thru-beam type
Diffuse reective type
Mountable with M3 screw
Metal inserts
Side sensing type
Front sensing type
A maximum 35 % reduction
compared to conventional sensors
335
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
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INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
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FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
ORDER GUIDE
Type Appearance Sensing range Model No.
(Note 3) Output Output operation
Thru-beam
Front sensing
1 m
3.281 ft
EX-21A NPN open-collector transistor
Light-ON
EX-21A-PN PNP open-collector transistor
EX-21B NPN open-collector transistor
Dark-ON
EX-21B-PN PNP open-collector transistor
Side sensing
2 m
6.562 ft
EX-23 NPN open-collector transistor Switchable either
Light-ON or
Dark-ON
EX-23-PN PNP open-collector transistor
Retroreective
Side sensing
30 to 200 mm
1.181 to 7.874 in
(Note 1)
EX-29A NPN open-collector transistor
Light-ON
EX-29A-PN PNP open-collector transistor
EX-29B NPN open-collector transistor
Dark-ON
EX-29B-PN PNP open-collector transistor
Diffuse reective
Side sensing
5 to 160 mm
0.197 to 6.299 in
(Note 2)
EX-22A NPN open-collector transistor
Light-ON
EX-22A-PN PNP open-collector transistor
EX-22B NPN open-collector transistor
Dark-ON
EX-22B-PN PNP open-collector transistor
Convergent reective
Diffused beam type
Front sensing
2 to 25 mm
0.079 to 0.984 in
(Convergent point: 10 mm 0.394 in)
EX-24A NPN open-collector transistor
Light-ON
EX-24A-PN PNP open-collector transistor
EX-24B NPN open-collector transistor
Dark-ON
EX-24B-PN PNP open-collector transistor
Small spot beam type
Side sensing
6 to 14 mm
0.236 to 0.551 in
(Convergent point: 10 mm 0.394 in)
EX-26A NPN open-collector transistor
Light-ON
EX-26A-PN PNP open-collector transistor
EX-26B NPN open-collector transistor
Dark-ON
EX-26B-PN PNP open-collector transistor
Narrow-view reective
Long distance spot beam type
Side sensing
45 to 115 mm
1.772 to 4.528 in
EX-28A NPN open-collector transistor
Light-ON
EX-28A-PN PNP open-collector transistor
EX-28B NPN open-collector transistor
Dark-ON
EX-28B-PN PNP open-collector transistor
NOTE: Mounting bracket is not supplied with the sensor. Please select from the range of optional sensor mounting brackets
(four types) or universal sensor mounting bracket.
Notes: 1) The sensing range of the retroreective type sensor is specied for the RF-200 reector.
Further, the sensing range is the possible setting range for the reector.
The sensor can detect an object less than 30 mm 1.181 in away.
However, if the reector is set 100 mm 3.937 in or less away, the sensing object should be
opaque.
2) In case of using this product at a sensing range of 50 mm 1.969 in or less, take care that the
sensitivity adjustment range becomes extremely narrow.
3) The model No. with “P” shown on the label afxed to the thru-beam type sensor is the emitter,
“D” shown on the label is the receiver.
(e.g.) Emitter of EX-21A: EX-21P, Receiver of EX-21A: EX-21AD
Sensor ReflectorReflector
Actual sensing range
of the sensor
Setting range
of the reflector
Reflector cannot
be placed
in this range 30 mm 1.181 in
200 mm
7.874 in
Two types for suitable mounting
Two types, side sensing type and front sensing type sensors
are available. Select depending on the place of mounting.
VARIETIES
(Without sensitivity adjuster)
(With sensitivity adjuster)
Side sensing type Front sensing type
Bright 2-color indicator
A bright 2-color indicator has been incorporated in all types.
(Orange LED: Operation indicator, Green LED: Stability indicator)
FUNCTIONS
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
336
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
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MENT
SENSORS
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DEVICES
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UV
CURING
SYSTEMS
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
ORDER GUIDE
Package without reector
Retroreective type is also available without the reector RF-200.
When ordering this type, sufx “-Y” to the model No.
(e.g.) Without reector type of EX-29A-PN is “EX-29A-PN-Y”.
5 m 16.404 ft cable length type
5 m 16.404 ft cable length type (standard: 2 m 6.562 ft) is also available for NPN output type (including package without reector of retroreective type sensor).
When ordering this type, sufx “-C5” to the model No.
(e.g.) 5 m 16.404 ft cable length type of EX-29A-Y is “EX-29A-Y-C5”.
Accessory
• RF-200 (Reector)
OPTIONS
Designation Model No. Description
Round slit mask
For thru-beam type
sensor only
For front sensing type
OS-EX20-05
Slit size ø0.5 mm
0.020 in
Slit on one side • Sensing range: 200 mm 7.874 in
• Min. sensing object: ø2.6 mm ø0.102 in
Slit on both sides
• Sensing range: 40 mm 1.575 in
• Min. sensing object: ø0.5 mm ø0.020 in
For side sensing type
OS-EX20E-05
Slit size ø0.5 mm
0.020 in
Slit on one side • Sensing range: 350 mm 13.780 in
• Min. sensing object: ø3 mm ø0.118 in
Slit on both sides
• Sensing range: 70 mm 2.756 in
• Min. sensing object: ø0.5mm ø0.020 in
Rectangular slit mask
For thru-beam type
sensor only
For front sensing type
OS-EX20-05×3
Slit size 0.5 × 3 mm
0.020 × 0.118 in
Slit on one side • Sensing range: 600 mm 23.622 in
• Min. sensing object: ø2.6 mm ø0.102 in
Slit on both sides
• Sensing range: 300 mm 11.811 in
• Min. sensing object: 0.5 × 3 mm 0.020 × 0.118 in
For side sensing type
OS-EX20E-05×3
Slit size 0.5 × 3 mm
0.020 × 0.118 in
Slit on one side • Sensing range: 800 mm 31.496 in
• Min. sensing object: ø3 mm ø0.118 in
Slit on both sides
• Sensing range: 400 mm 15.748 in
• Min. sensing object: 0.5 × 3 mm 0.020 × 0.118 in
Reector
For retroreective
type sensor only
RF-210 • Sensing range: 50 to 400 mm 1.969 to 15.748 in
• Min. sensing object: ø30 mm ø1.181 in
Reector
mounting
bracket
MS-RF21-1 Protective mounting bracket for RF-210
It protects the reector from damage and maintains alignment.
Reective tape
For retroreective
type sensor only
RF-11
• Ambient temperature:
–25 to +50 °C –13 to +122 °F
• Ambient humidity: 35 to 85 % RH
Notes
• Keep the tape free from stress. If it is
pressed too much, its capability may
deteriorate.
• Do not cut the tape.
It will deteriorate the sensing
performance.
• Sensing range:
70 to 200 mm
2.756 to 7.874 in
RF-12
• Sensing range:
60 to 280 mm
2.362 to 11.024 in
Round slit mask
Fitted on the front face of the sensor with one-touch.
• OS-EX20-05 • OS-EX20E-05
Rectangular slit mask
Fitted on the front face of the sensor with one-touch.
• OS-EX20-05×3 • OS-EX20E-05×3
Reector
• RF-210 • MS-RF21-1
33.3 mm
1.311 in
11 mm
0.433 in
12.8
mm
0.504
in
Two M3 (length 12 mm
0.472 in) screws with
washers are attached.
Reector mounting bracket
Reective tape
• RF-11 • RF-12
30 mm
1.181 in
25 mm
0.984 in
0.7 mm
0.028 in
30 mm
1.181 in
0.7 mm
0.028 in
8 mm
0.315 in
337
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
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COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
OPTIONS
Designation Model No. Description
Sensor mounting
bracket
MS-EX20-1 Back angled mounting bracket for front sensing type sensor
(The thru-beam type sensor needs two brackets.)
MS-EX20-2 Foot angled mounting bracket for side sensing type sensor
(The thru-beam type sensor needs two brackets.)
MS-EX20-3 L-shaped mounting bracket for front sensing type sensor
(The thru-beam type sensor needs two brackets.)
MS-EX20-4 Back angled mounting bracket for side sensing type sensor
(The thru-beam type sensor needs two brackets.)
Universal sensor
mounting bracket
MS-EXL2-4 For EX-22/23/26/28/29□It can adjust the height and the angle
of the sensor.
(The thru-beam type sensor needs
two brackets.)
MS-EX20-5
(Note 1) For EX-23□ only
Mounting spacer
For front sensing type
sensor only
MS-EX20-FS
It is used when mounting the front sensing type from the rear side.
(One set consists of 10 pcs.)
Sensor checker
(Note 2) CHX-SC2
It is useful for beam alignment of thru-beam type sensors. The optimum
receiver position is given by indicators, as well as an audio signal.
Sensor mounting bracket
• MS-EX20-1 • MS-EX20-2
Material:
Stainless steel (SUS304)
Two M3 (length 5 mm 0.197 in)
pan head screws [stainless
steel (SUS304)] are attached.
Material: Stainless steel (SUS304)
Two M3 (length 14 mm 0.551 in) screws with
washers [stainless steel (SUS304)] are attached.
• MS-EX20-3 • MS-EX20-4
Material:
Stainless steel (SUS304)
Two M3 (length 5 mm 0.197 in)
pan head screws [stainless
steel (SUS304)] are attached.
Material: Stainless steel (SUS304)
Two M3 (length 14 mm 0.551 in) screws with
washers [stainless steel (SUS304)] are attached.
Notes: 1) Note that the axis position of EX-23
□ is different when replacing the mounting bracket MS-EX20-5
with MS-EXL2-4
.
2) Refer to the sensor checker CHX-SC2 pages.
Mounting spacer
• MS-EX20-FS
MS-EX20-FS
Sensor checker
• CHX-SC2
LEVEL
POWER
CHX-SC2
Sensor checker
Universal sensor mounting bracket
• MS-EXL2-4
One set consists of 10 pcs.
Material: Die-cast zinc alloy
360° rotation
Height adjustment:
15 mm 0.591 in
Two M3 (length 14 mm 0.551 in)
screws with washers, one M3 (length
10 mm 0.394 in) hexagon-socket
head bolt [stainless steel (SUS)], and
one M3 hexagon nut [stainless steel
(SUS)] are attached.
• MS-EX20-5
Material: Die-cast zinc alloy
360° rotation
Height adjustment:
15 mm 0.591 in
Material: Nylon 6
Two M3 (length 12 mm 0.472 in)
screws with washers [stainless
steel (SUS)], one M3 (length
10 mm 0.394 in) hexagon-socket
head bolt [stainless steel (SUS)],
and one M3 hexagon nut [stainless
steel (SUS)] are attached.
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
338
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
SPECIFICATIONS
Notes: 1) Where measurement conditions have not been specied precisely, the conditions used were an
ambient temperature of +23 °C +73.4 °F.
2) Model Nos. having the sufx “-PN” are PNP output type.
3)
Either Light-ON or Dark-ON can be selected by the operation mode switch (located on the receiver).
4) The sensing range and the sensing object of the retroreective type sensor are specied for the
RF-200 reector. Further, the sensing range is the possible setting range for the reector. The
sensor can detect an object less than 30 mm 1.181 in away. However, if the reector is set
100 mm 3.937 in or less away, the sensing object should be opaque.
5) In case of using this product at a sensing range of 50 mm 1.969 in or less, take care that the
sensitivity adjustment range becomes extremely narrow.
6) Make sure to conrm detection with an actual sensor before use.
Sensor ReflectorReflector
Actual sensing range
of the sensor
Setting range
of the reflector
Reflector cannot
be placed
in this range
30 mm 1.181 in
200 mm 7.874 in
Type Thru-beam Retroreective
Diffuse reective
Convergent reective
Narrow-view reective
Diffused beam type
Small spot beam type
Long distance spot beam type
Front sensing Side sensing Side sensing Side sensing Front sensing Side sensing Side sensing
Model No.
(Note 2)
Light-ON EX-21A(-PN)
EX-23(-PN)
(Note 3)
EX-29A(-PN)EX-22A(-PN)EX-24A(-PN)EX-26A(-PN)EX-28A(-PN)
Item Dark-ON EX-21B(-PN)EX-29B(-PN)EX-22B(-PN)EX-24B(-PN)EX-26B(-PN)EX-28B(-PN)
Sensing range 1 m
3.281 ft
2 m
6.562 ft
30 to 200 mm
1.181 to 7.874 in
(Note 4)
5 to 160 mm 0.197
to 6.299 in
(Note 5)
with white non-glossy
paper (200 × 200 mm)
(7.874 × 7.874 in)
2 to 25 mm 0.079 to
0.984 in
(Conv. point: 10
mm 0.394 in) with white
non-glossy paper (50 × 50
mm) (1.969 × 1.969 in)
6 to 14 mm 0.236 to 0.551 in
(Conv. point: 10 mm 0.394 in) with white
non-glossy paper (50 × 50 mm 1.969 ×
1.969 in), spot diameter ø1 mm ø0.039 in
with setting distance 10 mm 0.394 in
45 to 115 mm 1.772 to 4.528 in
with white non-glossy paper (100
× 100 mm 3.937 × 3.937 in), spot
diameter ø5 mm ø0.197 in with
setting distance 80 mm 3.150 in
Sensing object
Min. ø2.6 mm ø0.102 in
opaque object
Setting distance
between emitter and
receiver: 1 m 3.281 ft
Min. ø3 mm ø0.118 in
opaque object
Setting distance
between emitter and
receiver: 2 m 6.562 ft
ø15 mm ø0.591 in or
more opaque or tran
slucent object
(Note 4, 6)
Opaque,
translucent or
transparent
object
(Note 6)
Min. ø0.1 mm
ø0.004 in
copper wire
Setting distance:
10 mm 0.394 in
Min. ø0.1 mm
ø0.004 in
copper wire
Setting distance:
10 mm 0.394 in
Opaque, translucent or
transparent object (Note 6)
Min. ø1 mm ø0.039 in
copper wire at setting
distance 80 mm 3.150 in
Hysteresis
–
15 % or less of operation distance [50 × 50 mm 1.969 × 1.969 in (EX-22□: 200 × 200 mm
7.874 × 7.874 in, EX-28□: 100 × 100 mm 3.937 × 3.937 in) (with white non-glossy paper)]
Repeatability
(perpendicular to sensing axis) 0.05 mm 0.002 in or less 0.5 mm
0.020 in or less
0.3 mm
0.012 in or less
0.1 mm 0.004 in or less
(Setting distance: 10 mm 0.394 in)
0.05 mm 0.002 in or less
(Setting distance: 10 mm 0.394 in)
0.3 mm
0.012 in or less
Supply voltage 12 to 24 V DC ± 10 % Ripple P-P 10 % or less
Current consumption
Emitter: 10 mA or less, Receiver: 10 mA or less
13 mA or less 15 mA or less
Output
<NPN output type>
NPN open-collector transistor
• Maximum sink current: 50 mA
• Applied voltage: 30 V DC or less (between output and 0 V)
• Residual voltage: 2 V or less (at 50 mA sink current)
1 V or less (at 16 mA sink current)
<PNP output type>
PNP open-collector transistor
• Maximum source current: 50 mA
• Applied voltage: 30 V DC or less (between output and +V)
• Residual voltage: 2 V or less (at 50 mA source current)
1 V or less (at 16 mA source current)
Utilization category DC-12 or DC-13
Short-circuit protection Incorporated
Response time 0.5 ms or less
Operation indicator Orange LED (lights up when the output is ON) (thru-beam type: located on the receiver)
Stability indicator
Green LED (lights up under stable light received condition
or stable dark condition), located on the receiver
Green LED (lights up under stable light received condition or stable dark condition)
Sensitivity adjuster
–
Continuously variable adjuster,
located on the emitter
Continuously variable adjuster
–
Continuously variable adjuster
Operation mode switch
–
Located on the receiver
–
Environmental resistance
Pollution degree 3 (Industrial environment)
Protection IP67 (IEC)
Ambient temperature –25 to +55 °C –13 to +131 °F (No dew condensation or icing allowed), Storage: –30 to +70 °C –22 to +158 °F
Ambient humidity 35 to 85 % RH, Storage: 35 to 85 % RH
Ambient illuminance Incandescent light: 3,000 ℓx at the light-receiving face
EMC EN 60947-5-2
Voltage withstandability
1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance 20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure
Vibration resistance 10 to 500 Hz frequency, 3 mm 0.118 in amplitude (20 G max.) in X, Y and Z directions for two hours each
Shock resistance 500 m/s2 acceleration (50 G approx.) in X, Y and Z directions for three times each
Emitting element Red LED (modulated)
Peak emission wavelength 640 nm 0.025 mil 650 nm 0.026 mil 680 nm 0.027 mil 680 nm 0.027 mil 680 nm 0.027 mil 650 nm 0.026 mil 650 nm 0.026 mil
Material Enclosure: Polyethylene terephthalate, Lens: Polyalylate
Cable 0.1 mm2 3-core (thru-beam type sensor emitter: 2-core) cabtyre cable, 2 m 6.562 ft long
Cable extension Extension up to total 50 m 164.042 ft is possible with 0.3 mm2, or more, cable (thru-beam type: both emitter and receiver).
Weight
Net weight (each emitter and receiver): 20 g approx.
Gross weight: 60 g approx. Net weight: 20 g approx., Gross weight: 45 g approx.
Accessories
–
Adjusting screwdriver:
1 pc.
RF-200 (Reector): 1 pc.
Adjusting screwdriver: 1 pc.
Adjusting screwdriver:
1 pc.
–
Adjusting screwdriver: 1 pc.
339
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
I/O CIRCUIT AND WIRING DIAGRAMS
NPN output type
I/O circuit diagram
Users’ circuit Internal circuit
D1
D2
Z
D
Tr
(Brown) +V
(Black) Output (Note)
(Blue) 0 V
Color code
50 mA max.
Load
Sensor circuit
+
–
12 to 24 V DC
± 10 %
Note: The emitter of the thru-beam type sensor does not incorporate the output.
Wiring diagram
Load
Brown
Black (Note)
Blue
Color code
+
–
12 to 24 V DC
± 10 %
Note: The emitter of the thru-beam type sensor does not incorporate the
black wire.
Symbols ... D1: Reverse supply polarity protection diode
D2: Reverse output polarity protection diode
ZD
: Surge absorption zener diode
Tr : NPN output transistor
Symbols ... D1: Reverse supply polarity protection diode
D2: Reverse output polarity protection diode
ZD
: Surge absorption zener diode
Tr : PNP output transistor
PNP output type
I/O circuit diagram Wiring diagram
Users’ circuit Internal circuit
D1
D2
Tr
(Brown) +V
(Black) Output (Note)
(Blue) 0 V
Color code
50 mA max.
Load
Sensor circuit
+
–
12 to 24 V DC
± 10 %
Z
D
Load
Brown
Black (Note)
Blue
Color code
+
–
12 to 24 V DC
± 10 %
Note: The emitter of the thru-beam type sensor does not incorporate the output.
Note: The emitter of the thru-beam type sensor does not incorporate the
black wire.
SENSING CHARACTERISTICS (TYPICAL)
EX-21□ EX-23□ EX-29□ EX-22□
Correlation between setting distance and excess gain
100 50 050 100
3.937 1.969 1.969 3.937
0
0.5
1
1.640
3.281
ℓ L
Receiver
Emitter
Setting distance L (m ft)
Operating point ℓ (mm in)
CenterLeft Right
Receiver
Emitter
1.640
3.281
Setting distance L (m ft)
Operating angle θ ( ° )
θ
40 20 02
04
0
1
0.5
0
L
Left Center Right
20 10 01
02
0
0
100
200
ℓ L
Receiver
Emitter
Slit on one
side
Slit on both
sides
0.787 0.394 0.394 0.787
3.937
7.874
Setting distance L (mm in)
Operating point ℓ (mm in)
CenterLeft Right
40 20 02
04
0
0
200
400
600
800
ℓ L
Receiver
Emitter
Slit on one
side
Slit on both
sides
31.496
23.622
15.748
7.874
1.575 0.787 0.787 1.575
Setting distance L (mm in)
Operating point ℓ (mm in)
CenterLeft Right
EX-21□ Thru-beam type
Parallel deviation Angular deviation
Parallel deviation with round slit
masks (ø0.5 mm ø0.020 in)
Parallel deviation with rectangular slit
masks (0.5 × 3 mm 0.020 × 0.118 in)
01 345
10
5
100
2
3.281 9.843 13.123 16.4046.562
Excess gain
50
Setting distance L (m ft)
EX-21□
EX-23□
10 200 600 800 1,000
10
5
100
400
50
EX-29□
1
10
7.874 23.622 31.496 39.37015.748
Excess gain
Setting distance L (mm in)
050 150 200 250
1
10
5
100
100
50
EX-22□
1.969 5.906 7.874 9.8433.937
Excess gain
Setting distance L (mm in)
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
340
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
SENSING CHARACTERISTICS (TYPICAL)
EX-23□Thru-beam type
Parallel deviation Angular deviation
Parallel deviation with round
slit masks (ø0.5 mm ø0.020 in)
Parallel deviation with rectangular slit
masks (0.5 × 3 mm 0.020 × 0.118 in)
100 50 050 100
ℓ L
Receiver
Emitter
3.937 1.969 1.969 3.937
6.562
3.281
Setting distance L (m ft)
Operating point ℓ (mm in)
CenterLeft Right
0
1
2
100 50 050 100
θ L
Emitter
Receiver
6.562
3.281
Setting distance L (m ft)
Operating point θ ( ° )
CenterLeft Right
0
1
2
1020 01
02
0
0
100
200
300
400
Operating point ℓ (mm in)
CenterLeft Right
Slit on one
side
Slit on both
sides
Receiver
Emitter
ℓ L
0.787 0.394 0.394 0.787
7.874
11.811
3.937
15.748
Setting distance L (mm in)
40 20 02
04
0
0
0.5
1
Slit on one
side
Slit on both
sides
Receiver
Emitter
ℓ L
1.575 0.787 0.787 1.575
3.281
1.640
Setting distance L (m ft)
Operating point ℓ (mm in)
CenterLeft Right
EX-29□Retroreective type
Parallel deviation Angular deviation
20 10 01
02
0
0
100
200
L
Sensor
ℓ
Reflector
(RF-200)
0.787 0.394 0.394 0.787
7.874
3.937
Setting distance L (mm in)
Operating point ℓ (mm in)
CenterLeft Right
40 20 02
04
0
0
100
200
Sensor
angular
deviation
Reflector
angular
deviation
Sensor
Reflector
(RF-200)
Sensor
angular
deviation
L
θ
Reflector
(RF-200)
Reflector
angular
deviation
θ L
Sensor
7.874
3.937
Setting distance L (mm in)
Operating angle θ ( ° )
CenterLeft Right
EX-22□Diffuse reective type
Sensing eld
0
50
100
150
200
42024
White non-
glossy paper
Gray non-glossy paper
Lightness: 6
ℓ L
200 × 200 mm
7.874 × 7.874 in
Non-glossy paper
Sensor
Left Right
Center
Operating point ℓ (mm in)
0.157 0.079 0.079 0.157
7.874
5.906
3.937
1.969
Setting distance L (mm in)
050 100 150 200
100
200
Sensing range L (mm in)
White non-glossy paper
side length a (mm in)
L
a × a mm a × a in
White non-glossy
paper
Sensor
1.969 3.937 5.906 7.874
7.874
3.937
Correlation between sensing object size and sensing range
As the sensing object size becomes smaller than the
standard size (white non-glossy paper 200 × 200 mm
7.874 × 7.874 in), the sensing range shortens, as shown
in the left graph.
EX-24□Convergent reective type
Sensing elds
• Horizontal (left and right) direction
• Vertical (up and down) direction
240
24
0
10
20
30
40
ℓ L
8 mm 0.315 in
Sensor
50 × 50 mm
1.969 × 1.969 in
White
non-glossy
paper
1.575
1.181
0.787
0.394
0.157 0.079 0.079 0.157
Operating point ℓ (mm in)
CenterLeft Right
Setting distance L (mm in)
240
24
0
10
20
30
40
Sensor
ℓ L
6 mm 0.236 in
1.575
1.181
0.787
0.394
0.157 0.079 0.079 0.157
Operating point ℓ (mm in)
CenterLeft Right
Setting distance L (mm in)
50 × 50 mm 1.969 × 1.969 in
White non-glossy paper
341
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
SENSING CHARACTERISTICS (TYPICAL)
Correlation between lightness and sensing range
N2 N4 N8N6
10
0
20
30
40
0.394
0.787
1.181
1.575
Sensing range L (mm in)
Distance to
convergent point
Sensing region
N2N1 N3 N4 N5 N6 N7 N8 N9
Lightness LightDark
The sensing region (typical) is
represented by oblique lines
in the left gure. However, the
sensitivity should be set with
enough margin because of
slight variation in products.
Aluminum-evaporated
mirror
Aluminum plate
White non-glossy
paper
Black-painted
non-glossy plate
Gray non-glossy
paper (N5)
Distance to
conver
g
ent
p
oint
20
0
40
60
80
Stainless steel plate
(SUS304)
0.787
1.575
2.362
3.150
Sensing range L (mm in)
EX-26□Convergent reective type
The bars in the graph indicate
the sensing range (typical)
for the respective material.
However, there is a slight
variation in the sensing range
depending on the product.
Further, if there is a reective
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.
Lightness shown on the left
may differ slightly from the
actual object condition.
Correlation between material (50 × 50 mm 1.969 × 1.969 in) and sensing range
Sensing elds
EX-24□Convergent reective type
• Horizontal (left and right) direction
ℓ
White non-
glossy paper
L
Sensor
0.5100.5 1
0.0200.039 0.020 0.039
0
5
10
15
20
Operating point ℓ (mm in)
CenterLeft Right
Setting distance L (mm in)
0.197
0.394
0.591
0.787
50 × 50 mm
1.969 × 1.969 in
4.1 mm
0.161 in
• Vertical (up and down) direction
0.5100.5 1
0
5
10
15
20
Sensor
13.5 mm
0.531 in
ℓL
50 × 50 mm 1.969 × 1.969 in
White non-glossy paper
0.0200.039 0.020 0.039
Operating point ℓ (mm in)
CenterLeft Right
Setting distance L (mm in)
0.787
0.591
0.394
0.197
Correlation between lightness and sensing range
Correlation between material (50 × 50 mm 1.969 × 1.969 in) and sensing range
Aluminum-evaporated
mirror
Aluminum plate
White non-glossy
paper
Black-painted
non-glossy plate
Gray non-glossy
paper (N5)
20
0
40
Sensing range L (mm in)
Stainless steel plate
(SUS304)
1.575
0.787
Distance to conver
g
ent
p
oint
The bars in the graph indicate the
sensing range
(typical)
for the
respective material. However, there
is a slight variation in the sensing
range depending on the product.
Further, if there is a reective 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.
EX-28□Narrow-view reective type
Sensing eld
240
24
0.0790.157 0.079 0.157
0
50
100
150
200
1.969
3.937
5.906
7.874
ℓ L
Sensor
4.1 mm
0.161 in
Operating point ℓ (mm in)
CenterLeft Right
Setting distance L (mm in)
White non-
glossy paper
Black non-glossy paper
Lightness: 6
Approach direction of
black non-glossy paper
100 × 100 mm
3.937 × 3.937 in
Non-glossy paper
Correlation between sensing object size and sensing range
500 100 150 200
1.969 3.937 5.906 7.874
L
a × a mm a × a in
White non-glossy
paper
Sensor
White non-glossy paper
side length a (mm in)
50
100
150
200
1.969
3.937
5.906
7.874
Sensing range L (mm in)
As the sensing object size becomes smaller than the
standard size (white non-glossy paper 100 × 100 mm
3.937 × 3.937 in), the sensing range shortens, as
shown in the left graph.
N2 N4 N8N6
5
0
10
15
20
Sensing range L (mm in)
Distance to convergent point
Sensing region
N2N1 N3 N4 N5 N6 N7 N8 N9
Lightness LightDark
0.197
0.394
0.591
0.787
The sensing region (typical) is
represented by oblique lines
in the left gure. However, the
sensitivity should be set with
enough margin because of
slight variation in products.
Lightness shown on the left
may differ slightly from the
actual object condition.
The graph is drawn for the
maximum sensitivity setting.
The graph is drawn for the
maximum sensitivity setting.
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
342
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
PRECAUTIONS FOR PROPER USE Refer to General precautions.
Stability indicator
• The stability indicator (green) lights up when the incident
light intensity has sufcient 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.
M3 screws
Mounting
• Mount using M3 screws. The tightening torque should be
0.5 N·m or less.
Front sensing Side sensing
M3 pan head screws (Note)
M3 screws
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,
t the mounting spacer (MS-EX20-FS) and x with screws.
1
Fit the mounting
spacer on the sensor.
2
Align the mounting holes of
the mounting spacer and the
sensor and mount with M3
screws. The tightening torque
should be 0.5 N
·
m or less.
Mounting
spacer (Optional)
Sensitivity adjustment (side sensing type only)
Step
Sensitivity adjuster
Description
1
MAX
Turn the sensitivity adjuster fully counterclockwise to
the minimum sensitivity position (• mark).
2
MAX
A
In the light received condition, turn the sensitivity
adjuster slowly clockwise and conrm the point A
where the sensor enters the “Light” state operation.
3
MAX
A
B
In the dark condition, turn the sensitivity adjuster further
clockwise until the sensor enters the “Light” state operation
and then bring it back to conrm point
B
where the sensor
just returns to the “Dark” state operation.
4
MAX
A
B
Optimum position
The position at the middle of points A and B is the
optimum sensing position.
Notes: 1)
Use the attached 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 50 mm 1.969 in or less,
take care that the sensitivity adjustment range becomes extremely narrow.
Operation mode switch (EX-23□ only)
Switch
position Description
L
D
Light-ON mode is obtained when the operation mode switch
(located on the receiver) is turned fully clockwise (L side).
L
D
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.
Mounting method
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
.
Operation of stability indicator
Output operation
Incident
light
margin
Light
interruption
margin
Output
operation
level
Lights off
0
100
0
Incident light intensity (%)
Setting distance
Lights up
Light interrupted
operation
Lights up
15 % approx.
25 % approx.
Light received
operation
Glossy object sensing (EX-29□)
• Please take care of the following points when detecting
materials having a gloss.
LMake L sufficiently long
Sensor
10 to 30 °
Glossy surface
Sensing object
Reflector
Wiring
• Excess bending of the cable or stress applied to the
cable may disconnect the internal lead wire.
Others
• Do not use during the initial transient time (50 ms) after
the power supply is switched on.
• If sensors are mounted close together and the ambient
temperature is near the maximum rated value, provide for
enough heat radiation / ventilation.
• If a reective object is present in the background, the
sensing of EX-28□ may be affected. When setting the
sensor, make sure to conrm that the reective object
has no effect. In case the reective object affects the
sensing, take measures such as removing the reective
object or coloring it in black, etc.
• Never use this product as a sensing device
for personnel protection.
• In case of using sensing devices for
personnel protection, use products which
meet laws and standards, such as OSHA,
ANSI or IEC etc., for personnel protection
applicable in each region or country.
343
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Sensor
EX-21□
Operation indicator (Orange)
(Note)
Stability indicator (Green)
(Note)
2-ø3.2 ø0.126 mounting holes
ø2.5 ø0.098 cable,
2 m 6.562 ft long
Beam axis
2.3
0.091
4.5
0.177 16
0.630
10
0.394
3 0.118
18
0.709
9
0.354
Sensor
EX-23□
Note: Not incorporated on the emitter.
3.5
0.138
8.2
0.323 2.8
0.110
10.5
0.413
Operation indicator (Orange)
(Note 1)
Stability indicator (Green)
(Note 1)
6.5
0.256
3 0.118
13
0.512
3 0.118
19
0.748
2-ø3.2 ø0.126
mounting holes
ø2.5 ø0.098 cable,
2 m 6.562 ft long
Operation mode switch
(Note 2)
9.5
0.374
Beam axis
Notes: 1) Not incorporated on the emitter.
2) It is the sensitivity adjuster on the emitter.
Sensor
EX-29□ EX-22□ EX-26□ EX-28□
Operation indicator (Orange)
Stability indicator (Green)
ø2.5 ø0.098 cable, 2 m 6.562 ft long
Sensitivity adjuster
Beam-
receiving part
Beam-
emitting part
2.8
0.110
8.2
0.323
10
0.394
12.3
0.484
16
0.630
3 0.118
3 0.118
5.3
0.209
5
0.197
5.5
0.217
11
0.433
2-ø3.2 ø0.126
mounting holes
22
0.866
Reector (Accessory for the retroreective type sensor)
RF-200
4.6 0.181
(13)
(0.512)
9.6
0.378
17.5
0.689
7.75
0.305
6.5 0.256 1.5
0.059
ø2.3
ø0.091
2.3
0.091
13
0.512
3.5 0.138
ø3.2 ø0.126 mounting hole
Material: Acrylic (Reector)
ABS (Base)
Sensor
EX-24□
Operation indicator (Orange)
Stability indicator (Green)
Beam-receiving part
Beam-emitting part
2.3
0.091
4.5
0.177
5
0.197
9
0.354
18
0.709
ø2.5 ø0.098 cable,
2 m 6.562 ft long
3 0.118
2-ø3.2 ø0.126
mounting holes
16
0.630
10
0.394
RF-210 Reector (Optional)
10
0.394
25
0.984
3.2
0.126
33.3
1.311
12.8
0.504
11
0.433
Reflector
Base
M3 nut mounting holes
(for mounting at the back)
2-ø3.4 ø0.134 thru-holes
(for mounting at the side)
(for mounting at the back)
2-ø3.4 ø0.134 holes, 6 0.236 deep
(for mounting at the side)
2-M3 nut mounting holes
Material: Acrylic (Reector) ABS (Base)
Two M3 (length 8 mm 0.315 in) screws with
washers and two nuts are attached.
DIMENSIONS (Unit: mm in)The CAD data in the dimensions can be downloaded from our website.
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
344
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
RF-11 Reective tape (Optional)
8
0.315
0.7
0.028
30 1.181
Adhesive tape
Effective
reflecting surface
(28)(1.102)
(6)
(0.236)
Material: Acrylic
RF-12 Reective tape (Optional)
30 1.181
0.7
0.028
25
0.984
Adhesive tape
Effective
reflecting surface
(28)(1.102)
(23)
(0.906)
Material: Acrylic
23
0.906
50
1.969
5.5
0.217
16
0.630
10
0.394 3.5
0.138
3.2
0.126
12.5 0.492
R7.5
R0.295
25
0.984
46
1.811
t 1.2
t 0.047
13
0.512
ø36
ø1.417
ø25
ø0.984
20°
30°
MS-RF21-1 Reector mounting bracket for RF-210 (Optional)
Assembly dimensions
23
0.906
5.5
0.217
10
0.394
12.8 0.504
13 0.512
46
1.81125
0.984
20°
30°
50
1.969
ø36
ø1.417
MS-EX20-1 Sensor mounting bracket (Optional)
3.2
0.126
10.5
0.413
t 1.5
t 0.059
5 0.197
4-M3 × 0.5 0.020
11
0.433
29.5
1.161
10
0.394
5
0.197
2
0.079
2
0.079
9
0.354
19
0.748
12
0.472
Material: Stainless steel (SUS304)
Two M3 (length 5 mm 0.197 in) pan head screws
[stainless steel (SUS304)] are attached.
Assembly dimensions
Mounting drawing with EX-21□
Beam-receiving
part
2
0.079
4.5
0.177
5 0.197
t 1.5
t 0.059 10.5
0.413
(6.5)(0.256)
(1.2)
(0.047)
5
0.197
2 0.079
3.2 0.126
16
0.630
16
0.630
29.5
1.161
1.5
0.059
9
0.354
19
0.748
10.5
0.413
11
0.433
10
0.394
(12)(0.472)
DIMENSIONS (Unit: mm in)The CAD data in the dimensions can be downloaded from our website.
Material: Stainless steel (SUS304)
Two M3 (length 12 mm 0.472 in)
screws with washers are attached.
345
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
MS-EX20-2 Sensor mounting bracket (Optional)
Assembly dimensions
Mounting drawing with the receiver of EX-23□
R13
R0.512
Beam-receiving part
0.3
0.012
10.5
0.413
24
0.945
13
0.512
17.5
0.689
t 1.2
t 0.047
34
1.339
14°
16
0.630
8
0.315
2
0.079
3.2 0.126
3.5
0.138
11.6
0.457
3
0.118
7.5
0.295 12.5
0.492
3.2
0.126 (24.1)
(0.949)
3.2 0.126
3.5
0.138
2
0.079
3.2
0.126
3-M3 × 0.5
0.020
t 1.5
t 0.059
2.5
0.098
2.5
0.098
2.5
0.098
10°
16
0.630
t 1.2
t 0.047
34
1.339
14°
16
0.630 3.2
0.126
14.5
0.571
16
0.630
3
0.118
8
0.315
3
0.118
7.5
0.295
13
0.512
R13
R0.512
12.5
0.492
1 2
MS-EX20-3 Sensor mounting bracket (Optional)
Assembly dimensions
Mounting drawing with the receiver of EX-21□
4.5
0.177
3.2 0.126
2 0.079
2
0.079
10.5
0.413
1.5 0.059
19
0.748
16
0.630
18.5
0.728
3.5
0.138
10
0.394
(1.2)
(0.047)
t 1.5
t 0.059
Beam-receiving
part
11.5
0.453
9
0.354
9
0.354
14
0.551
4-M3 × 0.5
0.020
9
0.354
3.2 0.126
2 0.079
2
0.079
9
0.354 12
0.472
19
0.748
20
0.787
6.5
0.256
10
0.394
t 1.5
t 0.059
14
0.551
MS-EX20-4 Sensor mounting bracket (Optional)
3-M3 × 0.5
0.020
3.2 0.126
t 1.5
t 0.059
2.5
0.098
2.5
0.098
t 1.2
t 0.047
3.2
0.126
R13
R0.512
10°
16
0.630
8
0.315
3
0.118
3 0.118
12
0.472
3
0.118
23
0.906
14.5
0.571
5
0.197
17
0.669
14°
8
0.315
13
0.512
2.5
0.098
13
0.512
1 2
Assembly dimensions
Mounting drawing with the receiver of EX-23□
R13
R0.512
Beam-receiving part
0.3
0.012
10.5
0.413
12.1
0.476
3.2
0.126
13
0.512
8
0.315
3 0.118
8.2
0.323
3
0.118
12
0.472
4.5 0.177
13
0.512
3.5
0.138
23
0.906
14°
t 1.2
t 0.047
17
0.669
8
0.315
(24.6)
(0.969)
DIMENSIONS (Unit: mm in)The CAD data in the dimensions can be downloaded from our website.
Material: Stainless steel (SUS304)
Two M3 (length 14 mm 0.551 in)
screws with washers [stainless steel
(SUS304)] are attached.
Material: Stainless steel (SUS304)
Two M3 (length 5 mm 0.197 in) pan head screws
[stainless steel (SUS304)] are attached.
Material: Stainless steel (SUS304)
Two M3 (length 14 mm 0.551 in) screws
with washers [stainless steel (SUS304)] are
attached.
Ultra-compact Photoelectric Sensor EX-20 SERIES Ver.2
346
FIBER
SENSORS
LASER
SENSORS
PHOTO-
ELECTRIC
SENSORS
MICRO
PHOTO-
ELECTRIC
SENSORS
AREA
SENSORS
LIGHT
CURTAINS
PRESSURE /
FLOW
SENSORS
INDUCTIVE
PROXIMITY
SENSORS
PARTICULAR
USE
SENSORS
SENSOR
OPTIONS
SIMPLE
WIRE-SAVING
UNITS
WIRE-SAVING
SYSTEMS
MEASURE-
MENT
SENSORS
STATIC
CONTROL
DEVICES
ENDOSCOPE
LASER
MARKERS
PLC /
TERMINALS
HUMAN
MACHINE
INTERFACES
ENERGY
CONSUMPTION
VISUALIZATION
COMPONENTS
FA
COMPONENTS
MACHINE
VISION
SYSTEMS
UV
CURING
SYSTEMS
Selection
Guide
Amplier
Built-in
Power Supply
Built-in
Amplier-
separated
CX-400
EX-10
EX-20
EX-30
EX-40
CX-440
EQ-30
EQ-500
MQ-W
RX-LS200
RX
RT-610
MS-EX20-5 Universal sensor mounting bracket (Optional)
2-M3 × 0.5
0.020
2
0.079
ø7
ø0.276
7
0.276
2.6
0.102
4.1
0.161
14
0.551
6
0.236
8 0.315
6 0.236
2.2 0.087
2
0.079
1.5
0.059
4
0.157
8.5
0.335 3.2
0.126
5.5
0.217
5.5 0.217
ø7
ø0.276
2-ø3.3 ø0.130
thru-holes
2.6
0.102
1.5
0.059
3 0.118
3 0.118
3.2 0.126
19.5
0.768
22.5
0.886 25.5
1.004
23.5
0.925
30
1.181
9.5
0.374
16
0.630
22.5
0.886
19.5
0.768
12
0.472
12
0.472
2-ø3.2 ø0.126
mounting holes
2-hexagon
nut seats
4.5
0.177
19.5
0.768
15.5
0.610
15
0.591
13
0.512
1
2
Assembly dimensions
Mounting drawing with the receiver of EX-23□
Beam-
receiving part
2-ø3.2
ø0.126
mounting
holes
6
0.236
ø7
ø0.276
(7.3)(0.287)
(6.7)
(0.264)
3 0.118
12
0.472
6.5
0.256
3
0.118
2.2 0.087
13
0.512
25.5
1.004
30
1.181
8.5
0.335 19.5
0.768
14
0.551
15
0.591
(15)
(0.591)(Note)
Note: This is the adjustable range of the movable part.
MS-EX20-FS Mounting spacer (Optional)
2
0.079
6
0.236
4.2
0.165
2.5
0.098
4.5
0.177
8
0.315
10 0.394
16
0.630
4.9
0.193
10.7
0.421
ø2.5 ø0.098
2-ø3.4 ø0.134
mounting holes
Assembly dimensions
Mounting drawing with the receiver of EX-21□
9
0.354
8
0.315
6
0.236
10
0.394
4.5
0.177
0.3
0.012
23
0.906
Beam-receiving
part 16
0.630
DIMENSIONS (Unit: mm in)The CAD data in the dimensions can be downloaded from our website.
Material: Polycarbonate
Material: Die-cast zinc alloy
Two M3 (length 12 mm 0.472 in) screws with washers [stainless
steel (SUS)], one M3 (length 10 mm 0.394 in) hexagon socket-
head bolt [stainless steel (SUS)], and one M3 hexagon nut
[stainless steel (SUS)] are attached.
Material: Nylon 6
MS-EXL2-4 Universal sensor mounting bracket (Optional)
1
3
2
6
0.236 14
0.551
3-M3 × 0.5 0.020
10°
t 1.5
t 0.059
2.5
0.098
11.2
0.441
3.45
0.136
8.4 0.331
3.05
0.120
3°
3 0.118
13
0.512
1.5
0.059
4.1
0.161
1.5
0.059
ø8.5
ø0.335
3.05 0.120
1.5
0.059
12
0.472
9.5
0.374
ø8.5
ø0.335
4 0.157
5.5 0.217
15.5
0.610
19.5
0.768
2-hexagon nut seats
ø3.3 ø0.130
thru-holes
2-ø3.2 ø0.126
mounting holes
4
0.157
25.5
1.004
31.5
1.240
30
1.181
25.5
1.004
28.5
1.122
3.8
0.150
14
0.551
5.5 0.217
15
0.591
2.5
0.098
16
0.630
13
0.512
2.5 0.098
Assembly dimensions
Mounting drawing with EX-22/26/28/29□
3.5 0.138
ø8.5
ø0.335
(6.7)
(0.264)
(8.8)
(0.346)
5.9 0.232
3 0.118
16
0.630
9.5
0.374
19.5
0.768
2-ø3.2 ø0.126
mounting holes
6
0.236
14
0.551
Beam-emitting part
Beam-receiving part
30
1.181
31.5
1.240
(15)
(0.591) (Note)
5.5
0.217
10.5
0.413
12
0.472
15
0.591
Note: This is the adjustable range of the movable part.
Material: Die-cast zinc alloy
Two M3 (length 14 mm 0.551 in) screws with washers, one M3
(length 10 mm 0.394 in) hexagon socket-head bolt [stainless
steel (SUS)], and one M3 hexagon nut [stainless steel (SUS)]
are attached.
Material: Stainless steel (SUS)
