Panasonic Industry / Automation Controls
Panasonic Industry / Automation Controls

Ultra-compact Photoelectric Sensor EX-20 Ver.2

  • Basic Information

  • Applications

  • Order guide

  • Option

  • Specifications

  • Dimensions

  • Circuit/ Wiring

  • Sensing characteristics

  • Cautions For Use

------------------------------ Tab1 showing ------------------------------

Basic Information

Miniature-sized and still mountable with M3 screws

UL,CE,UKCA Approved

UL : Recognition(Excluding 5 m cable length type)

------------------------------ Tab2 showing ------------------------------

Applications

Detecting presence of chip components

Detecting presence of chip components

Checking protrusion of wafer

Checking protrusion of wafer

Sensing objects from an opening

Sensing objects from an opening

用途

チップ部品の有無検出
チップ部品の有無検出
ウェーハはみ出し確認
ウェーハはみ出し確認
すき間からのワーク検出
すき間からのワーク検出

------------------------------ Tab3 showing ------------------------------

Order guide

TypeAppearanceSensing rangeModel No.
(Note 3)
OutputOutput operation
Thru-beamFront sensing

1 m
3.281 ft
EX-21ANPN open-collector transistorLight-ON
EX-21A-PNPNP open-collector transistor
EX-21BNPN open-collector transistorDark-ON
EX-21B-PNPNP open-collector transistor
Side sensing

2 m
6.562 ft
EX-23NPN open-collector transistorSwitchable either
Light-ON or
Dark-ON
EX-23-PNPNP open-collector transistor
RetroreflectiveSide sensing

30 to 200 mm
1.181 to 7.874 in
(Note 1)
EX-29ANPN open-collector transistorLight-ON
EX-29A-PNPNP open-collector transistor
EX-29BNPN open-collector transistorDark-ON
EX-29B-PNPNP open-collector transistor
Diffuse reflectiveSide sensing

5 to 160 mm
0.197 to 6.299 in
(Note 2)
EX-22ANPN open-collector transistorLight-ON
EX-22A-PNPNP open-collector transistor
EX-22BNPN open-collector transistorDark-ON
EX-22B-PNPNP open-collector transistor
Convergent reflectiveDiffused beam typeFront sensing

2 to 25 mm
0.079 to 0.984 in
(Convergent point: 10 mm 0.394 in)
EX-24ANPN open-collector transistorLight-ON
EX-24A-PNPNP open-collector transistor
EX-24BNPN open-collector transistorDark-ON
EX-24B-PNPNP open-collector transistor
Small spot beam typeSide sensing

6 to 14 mm
0.236 to 0.551 in
(Convergent point: 10 mm 0.394 in)
EX-26ANPN open-collector transistorLight-ON
EX-26A-PNPNP open-collector transistor
EX-26BNPN open-collector transistorDark-ON
EX-26B-PNPNP open-collector transistor
Narrow-view reflectiveLong distance spot beam typeSide sensing

45 to 115 mm
1.772 to 4.528 in
EX-28ANPN open-collector transistorLight-ON
EX-28A-PNPNP open-collector transistor
EX-28BNPN open-collector transistorDark-ON
EX-28B-PNPNP 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.

Note 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 30 mm 1.181 in away.
However, if the reflector is set 100 mm 3.937 in or less away, the sensing object should be opaque.

Note 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.

Note 3 :

The model No. with "P" shown on the label affixed 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

Package without reflector

Retroreflective type is also available without the reflector RF-200.
When ordering this type, suffix "-Y" to the model No.
(e.g.) Without reflector type of EX-29A-PN is "EX-29A-PN-Y".

Standard typePackage without reflector
EX-29AEX-29A-Y
EX-29A-PNEX-29A-PN-Y
EX-29BEX-29B-Y
EX-29B-PNEX-29B-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 reflector of retroreflective type sensor).
When ordering this type, suffix "-C5" to the model No.
(e.g.) 5 m 16.404 ft cable length type of EX-29A-Y is "EX-29A-Y-C5".

Standard type5 m 16.404 ft cable length type
EX-21AEX-21A-C5
EX-21BEX-21B-C5
EX-23EX-23-C5
EX-29AEX-29A-C5
EX-29BEX-29B-C5
EX-29A-YEX-29A-Y-C5
EX-29B-YEX-29B-Y-C5
EX-22AEX-22A-C5
EX-22BEX-22B-C5
EX-24AEX-24A-C5
EX-24BEX-24B-C5
EX-26AEX-26A-C5
EX-26BEX-26B-C5
EX-28AEX-28A-C5
EX-28BEX-28B-C5

Accessory

RF-200 (Reflector)

Reflector

------------------------------ Tab4 showing ------------------------------

Option

DesignationModel No.Description
Round slit mask
(For thru-beam type sensor only)
For front sensing typeOS-EX20-05
(Slit size ø0.5mm 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 typeOS-EX20E-05
(Slit size ø0.5mm 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 typeOS-EX20-05x3
(Slit size 0.5 x 3 mm 0.020 x 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 x 3 mm 0.020 x 0.118 in
For side sensing typeOS-EX20E-05x3
(Slit size 0.5 x 3 mm 0.020 x 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 x 3 mm 0.020 x 0.118 in
Reflector
(For retroreflective 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
Reflector mounting bracketMS-RF21-1Protective mounting bracket for RF-210
It protects the reflector from damage and maintains alignment.
Reflective tape
(For retroreflective type sensor only)
RF-11・Ambient temperature:
–25 to +50 ℃ –13 to +122 ℉
・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
Sensor mounting bracketMS-EX20-1Back angled mounting bracket for front sensing type sensor
(The thru-beam type sensor needs two brackets.)
MS-EX20-2Foot angled mounting bracket for side sensing type sensor
(The thru-beam type sensor needs two brackets.)
MS-EX20-3L-shaped mounting bracket for front sensing type sensor
(The thru-beam type sensor needs two brackets.)
MS-EX20-4Back angled mounting bracket for side sensing type sensor
(The thru-beam type sensor needs two brackets.)
Universal sensor mounting bracket
(Note 1)
MS-EXL2-4For 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-EX20-5For EX-23□ only
Universal sensor mounting bracketMS-EX20-FSIt is used when mounting the front sensing type from the rear side.
(One set consists of 10 pcs.)
Sensor checker
(Note 2)
CHX-SC2It is useful for beam alignment of thru-beam type sensors. The optimum receiver position is given by indicators, as well as an audio signal.

Note 1 :

Note that the axis position of EX-23□ is different when replacing the mounting bracket MS-EX20-5 with MS-EXL2-4.

Note 2 :

Refer to the sensor checker CHX-SC2 page for details.

Round slit mask

OS-EX20-05

Fitted on the front face of the sensor with one-touch.

OS-EX20E-05

Fitted on the front face of the sensor with one-touch..

Rectangular slit mask

OS-EX20-05×3

Fitted on the front face of the sensor with one-touch.

OS-EX20E-05×3

Fitted on the front face of the sensor with one-touch.

Reflector

RF-210

Reflector mounting bracket

MS-RF21-1

Two M3 (length 12 mm0.472 in) screws with washers are attached.

Reflective tape

RF-11

RF-12

Sensor mounting bracket

MS-EX20-1

Material:Stainless steel (SUS304)Two M3 (length 5 mm0.197 in) pan head screws [stainless steel (SUS304)] are attached.

MS-EX20-2

Material:Stainless steel (SUS304)Two M3 (length 14 mm0.551 in) screws with washers [stainless steel (SUS304)] are attached.

MS-EX20-3

Material:Stainless steel (SUS304)Two M3 (length 5 mm0.197 in) pan head screws [stainless steel (SUS304)] are attached.

MS-EX20-4

Material:Stainless steel (SUS304)Two M3 (length 14 mm0.551 in) screws with washers [stainless steel (SUS304)] are attached.

Sensor checker

CHX-SC2

Mounting spacer

MS-EX20-FS

Universal sensor mounting bracket

MS-EXL2-4

Two M3 (length 14 mm0.551 in) screws with washers, one M3 (length 10 mm0.394 in) hexagon-socket head bolt [stainless steel (SUS)], and one M3 hexagon nut [stainless steel (SUS)] are attached.

MS-EX20-5

Two M3 (length 12 mm0.472 in) screws with washers [stainless steel (SUS304)], one M3 (length 10 mm0.394 in) hexagon-socket head bolt [stainless steel (SUS304)], and one M3 hexagon nut [stainless steel (SUS304)] are attached.

Recommended e-CON connector

Manufactured by 3M Japan Limited
Adapted connector : 37104-4080-G00 FL

Please refer to "Introducing the 3M™ mini-clamp connector" for details.

------------------------------ Tab5 showing ------------------------------

Specifications

TypeThru-beamRetroreflectiveDiffuse reflective
Front sensingSide sensingSide sensingSide sensing
Model No.
(Note 2)
Light-ONEX-21A
(-PN)
EX-23
(-PN)
(Note 3)
EX-29A
(-PN)
EX-22A
(-PN)
Dark-ONEX-21B
(-PN)
EX-29B
(-PN)
EX-22B
(-PN)
Applicable regulations and certificationsCE Marking (EMC Directive, RoHS Directive), UKCA Marking (EMC Regulations, RoHS Regulations)
Sensing range1 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 x 200 mm)
(7.874 x 7.874 in)
Sensing objectMin. 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 translucent object
(Note 4, 6)
Opaque,
translucent or
transparent
object
(Note 6)
Hysteresis-15 % or less of operation distance [200 x 200 mm 7.874 x 7.874 in (with white non-glossy paper)]
Repeatability
(perpendicular to sensing axis)
0.05 mm 0.002 in or less0.5 mm
0.020 in or less
0.3 mm
0.012 in or less
Supply voltage12 to 24 V DC ± 10 % Ripple P-P 10 % or less
Current consumptionEmitter: 10 mA or less, Receiver: 10 mA or less13 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 categoryDC-12 or DC-13
Short-circuit protectionIncorporated
Response time0.5 ms or less
Operation indicatorOrange LED
(lights up when the output is ON) (thru-beam type: located on the receiver)
Stability indicatorGreen 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
Operation mode switch-Located on the receiver-
Pollution degree3 (Industrial environment)
ProtectionIP67 (IEC)
Ambient temperature-25 to +55 ℃ -13 to +131
(No dew condensation or icing allowed),
Storage: -30 to +70 ℃ -22 to +158
Ambient humidity35 to 85 % RH, Storage: 35 to 85 % RH
Ambient illuminanceIncandescent light: 3,000 lx or less at the light-receiving face
Voltage withstandability1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure
Vibration resistance10 to 500 Hz frequency, 3 mm 0.118 in double amplitude (20 G max.) in X, Y and Z directions for two hours each
Shock resistance500 m/s2 acceleration (50 G approx.) in X, Y and Z directions three times each
Emitting elementRed LED (modulated)
 Peak emission wavelength640 nm
0.025 mil
650 nm
0.026 mil
680 nm
0.027 mil
680 nm
0.027 mil
MaterialEnclosure: Polyarylate, Lens: Polyarylate
Cable0.1 mm2 3-core (thru-beam type sensor emitter: 2-core) cabtyre cable, 2 m 6.562 ft long
Cable extensionExtension up to total 50 m 164.042 ft is possible with 0.3 mm2, or more, cable (thru-beam type: both emitter and receiver).
WeightNet 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 (Reflector): 1 pc.
Adjusting screwdriver: 1 pc.
Adjusting screwdriver:
1 pc.
TypeConvergent reflectiveNarrow-view reflective
Diffused beam typeSmall spot beam typeLong distance spot beam type
Front sensingSide sensingSide sensing
Model No.
(Note 2)
Light-ONEX-24A(-PN)EX-26A(-PN)EX-28A(-PN)
Dark-ONEX-24B(-PN)EX-26B(-PN)EX-28B(-PN)
Applicable regulations and certificationsCE Marking (EMC Directive, RoHS Directive), UKCA Marking (EMC Regulations, RoHS Regulations)
Sensing range2 to 25 mm 0.079 to 0.984 in (Conv. point: 10 mm 0.394 in) with white non-glossy paper (50 x 50 mm) (1.969 x 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 x 50 mm 1.969 x 1.969 in), spot diameter ø1 mm ø0.039 in with setting distance 10 mm 0.394 in45 to 115 mm 1.772 to 4.528 in with white non-glossy paper (100 x 100 mm 3.937 x 3.937 in), spot diameter ø5 mm ø0.197 in with setting distance 80 mm 3.150 in
Sensing objectMin. 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)
Hysteresis15 % or less of operation distance [50 x 50 mm 1.969 x 1.969 in (EX-28□: 100 x 100 mm 3.937 x 3.937 in) (with white non-glossy paper)]
Repeatability
(perpendicular to sensing axis)
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 voltage12 to 24 V DC ± 10 % Ripple P-P 10 % or less
Current consumption13 mA or less15 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 categoryDC-12 or DC-13
Short-circuit protectionIncorporated
Response time0.5 ms or less
Operation indicatorOrange LED
(lights up when the output is ON)
Stability indicatorGreen LED
(lights up under stable light received condition or stable dark condition)
Sensitivity adjuster-Continuously variable adjuster
Operation mode switch-
Pollution degree3 (Industrial environment)
ProtectionIP67 (IEC)
Ambient temperature-25 to +55 ℃ -13 to +131
(No dew condensation or icing allowed),
Storage: -30 to +70 ℃ -22 to +158
Ambient humidity35 to 85 % RH, Storage: 35 to 85 % RH
Ambient illuminanceIncandescent light: 3,000 lx or less at the light-receiving face
Voltage withstandability1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure
Vibration resistance10 to 500 Hz frequency, 3 mm 0.118 in double amplitude (20 G max.) in X, Y and Z directions for two hours each
Shock resistance500 m/s2 acceleration (50 G approx.) in X, Y and Z directions three times each
Emitting elementRed LED (modulated)
 Peak emission wavelength680 nm 0.027 mil650 nm 0.026 mil650 nm 0.026 mil
MaterialEnclosure: Polyarylate, Lens: Polyarylate
Cable0.1 mm2 3-core cabtyre cable, 2 m 6.562 ft long
Cable extensionExtension up to total 50 m 164.042 ft is possible with 0.3 mm2, or more, cable.
WeightNet weight: 20 g approx., Gross weight: 45 g approx.
Accessories-Adjusting screwdriver: 1 pc.

Notes:
1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 .
2) Model Nos. having the suffix "-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 retroreflective type sensor are 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 30 mm 1.181 in away. However, if the reflector 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 confirm detection with an actual sensor before use.

------------------------------ Tab6 showing ------------------------------

Dimensions

  • Unit: mm in

EX-21□

Sensor

EX-21

Note:Not incorporated on the emitter.

EX-23□

Sensor

EX-23

Notes:1) Not incorporated on the emitter.2) It is the sensitivity adjuster on the emitter.

EX-29□ EX-22□
EX-26□ EX-28□

Sensor

EX-29 EX-22 EX-26 EX-28

EX-24□

Sensor

EX-24

RF-200

Reflector (Accessory for the retroreflective type sensor)

RF-200

Material:Acrylic (Reflector)ABS (Base)

RF-210

Reflector (Optional)

RF-210

Material:Acrylic (Reflector) ABS (Base)Two M3 (length 8 mm0.315 in) screws with washers and two nuts are attached.

RF-11

Reflective tape (Optional)

RF-11

Material:Flexible Polyvinyl Chloride

RF-12

Reflective tape (Optional)

RF-12

Material:Flexible Polyvinyl Chloride

MS-RF21-1

Reflector mounting bracket for RF-210 (Optional)

MS-RF21-1

Material:Stainless steel (SUS304)Two M3 (length 12 mm0.472 in) screws with washers are attached.

Assembly dimensions

MS-RF21-1

MS-EX20-1

Sensor mounting bracket (Optional)

MS-EX20-1

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□

MS-EX20-1

MS-EX20-2

Sensor mounting bracket (Optional)

MS-EX20-2

Material:Stainless steel (SUS304)Two M3 (length 14 mm0.551 in) screws with washers [stainless steel (SUS304)] are attached.

Assembly dimensions

Mounting drawing with the receiver of EX-23□

MS-EX20-2

MS-EX20-3

Sensor mounting bracket (Optional)

MS-EX20-3

Material:Stainless steel (SUS304)Two M3 (length 5 mm0.197 in) pan head screws [stainless steel (SUS304)] are attached.

Assembly dimensions

Mounting drawing with the receiver of EX-21□

MS-EX20-3

MS-EX20-4

Sensor mounting bracket (Optional)

MS-EX20-4

Material:Stainless steel (SUS304)Two M3 (length 14 mm0.551 in) screws with washers [stainless steel (SUS304)] are attached.

Assembly dimensions

Mounting drawing with the receiver of EX-23□

MS-EX20-4

MS-EXL2-4

Universal sensor mounting bracket (Optional)

Material:Die-cast zinc alloyTwo M3 (length 14 mm0.551 in) screws with washers, one M3 (length 10 mm0.394 in) hexagon socket-head bolt [stainless steel (SUS)], and one M3 hexagon nut [stainless steel (SUS)] are attached.

Material: Stainless steel (SUS)

Note: This is the adjustable range of the movable part.

MS-EX20-5

Universal sensor mounting bracket (Optional)

MS-EX20-5

Material:Die-cast zinc alloyTwo M3 (length 12 mm0.472 in) screws with washers [stainless steel (SUS304)], one M3 (length 10 mm0.394 in) hexagon socket-head bolt [stainless steel (SUS304)], and one M3 hexagon nut [stainless steel (SUS304)] are attached.

Assembly dimensions

Mounting drawing with the receiver of EX-23□

MS-EX20-5

Note: This is the adjustable range of the movable part.

MS-EX20-FS

Mounting spacer (Optional)

MS-EX20-FS

Material:Polycarbonate

Assembly dimensions

Mounting drawing with the receiver of EX-21□

MS-EX20-FS

------------------------------ Tab7 showing ------------------------------

I/O Circuit and Wiring diagrams

NPN output type

I/O circuit diagram

NPN output type I/O circuit diagram

Note:The emitter of the thru-beam type sensor does not incorporate the output.

Symbols・・・

D1: Reverse supply polarity protection diode
D2: Reverse output polarity protection diode
ZD : Surge absorption zener diode
Tr : NPN output transistor

Wiring diagram

NPN output type Wiring diagram

Note:The emitter of the thru-beam type sensor does not incorporate the black wire.



PNP output type

I/O circuit diagram

PNP output type I/O circuit diagram

Note:The emitter of the thru-beam type sensor does not incorporate the output.

Symbols・・・

D1: Reverse supply polarity protection diode
D2: Reverse output polarity protection diode
ZD : Surge absorption zener diode
Tr : PNP output transistor

Wiring diagram

PNP output type Wiring diagram

Note:The emitter of the thru-beam type sensor does not incorporate the black wire.

------------------------------ Tab8 showing ------------------------------

Sensing characteristics

EX-21□ EX-23□ EX-29□ EX-22□

Correlation between setting distance and excess gain

EX-21□ EX-23□ Correlation between setting distance and excess gain

EX-29□ Correlation between setting distance and excess gain

EX-22□ Correlation between setting distance and excess gain

EX-21□

Thru-beam type

Parallel deviation

Thru-beam type EX-21□ Parallel deviation

Angular deviation

Thru-beam type EX-21□ Angular deviation

Parallel deviation with round slit masks
(ø0.5 mm ø0.020 in)

Thru-beam type EX-21□ 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)

Thru-beam type EX-21□ Parallel deviation with rectangular slit masks (0.5 × 3 mm 0.020 × 0.118 in)

EX-23□

Thru-beam type

Parallel deviation

Thru-beam type EX-23□ Parallel deviation

Angular deviation

Thru-beam type EX-23□ Angular deviation

Parallel deviation with round slit masks
(ø0.5 mm ø0.020 in)

Thru-beam type EX-23□ 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)

Thru-beam type EX-23□ Parallel deviation with rectangular slit masks (0.5 × 3 mm 0.020 × 0.118 in)

Parallel deviation with rectangular slit

EX-29□

Retroreflective type

Parallel deviation

Retroreflective type EX-29□ Parallel deviation

Angular deviation

Retroreflective type EX-29□ Angular deviation

EX-22□

Diffuse reflective type

Sensing field

Diffuse reflective type EX-22□ Sensing field

Correlation between sensing object size and sensing range

Diffuse reflective type EX-22□ 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 reflective type

Sensing fields

• Horizontal (left and right) direction

Convergent reflective type EX-24□ Sensing fields Horizontal (left and right) direction

• Vertical (up and down) direction

Convergent reflective type EX-24□ Sensing fields Vertical (up and down) direction

Correlation between lightness and sensing range

Convergent reflective type EX-24□ Correlation between lightness and sensing range

The sensing region (typical) is represented by oblique lines in the left figure. 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.)


Correlation between material (50 × 50 mm 1.969 × 1.969 in) and sensing range

Convergent reflective type EX-24□ Correlation between material (50 × 50 mm 1.969 × 1.969 in) and sensing range

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 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.

EX-26□

Convergent reflective type

Sensing fields

• Horizontal (left and right) direction

Convergent reflective type EX-26□ Sensing fields Horizontal (left and right) direction

• Vertical (up and down) direction

Convergent reflective type EX-26□ Sensing fields EX-26□ Vertical (up and down) direction

Correlation between lightness and sensing range

Convergent reflective type Correlation between lightness and sensing range

The sensing region (typical) 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.)

(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

Convergent reflective type EX-26□ Correlation between material (50 × 50 mm 1.969 × 1.969 in) and sensing range

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 productFurther, 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.)

EX-28□

Narrow-view reflective type

Sensing field

Narrow-view reflective type EX-28□ Sensing field

Correlation between sensing object size and sensing range

Narrow-view reflective type EX-28□ Correlation between sensing object size and sensing range

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.

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Cautions For Use

  • 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.

Mounting

  • Mount using M3 screws. The tightening torque should be 0.5 N·m or less.

Mounting

Note:When mounting the front sensing type sensor, use M3 pan head screws without washers, etc.


Mounting method

  • When mounting the front sensing type from the backside, fit the mounting spacer (MS-EX20-FS) and fix with screws.

Fit the mounting spacer on the sensor.

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.

Sensitivity adjustment (side sensing type only)

StepSensitivity adjusterDescription
1Turn the sensitivity adjuster fully counterclockwise to the minimum sensitivity position (• mark).
2In the light received condition, turn the sensitivity adjuster slowly clockwise and confirm the point Ⓐ where the sensor enters the “Light” state operation.
3In 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 Ⓑ 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 Ⓑ .)
4The position at the middle of points Ⓐ and Ⓑ 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
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.

Stability indicator

  • The stability indicator (green) lights up when the incident 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.

Stability indicator

Glossy object sensing (EX-29□)

  • Please take care of the following points when detecting materials having a gloss.

Glossy object sensing (EX-29□)

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 reflective object is present in the background, the sensing of EX-28□ may be affected. When setting the sensor, make sure to confirm that the reflective object has no effect. In case the reflective object affects the sensing, take measures such as removing the reflective object or coloring it in black, etc.

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