Miniature-sized and still mountable with M3 screws
UL , CE , Korean S Mark Approved
UL : Recognition(Excluding 5 m cable length type)
Korea’s S-mark certification : Some models only
Features
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 fine adjustment. Further, the receiver of the thru-beam, side sensing type sensor incorporates an operation mode switch which can change the output operation.
Long sensing range
The EX-20 series achieves long distance sensing [thru-beam type: 2 m 6.562 ft, retroreflective type: 200 mm 7.874 in (when using the attached reflector), diffuse reflective type: 160 mm 6.299 in], despite its miniature size.
Hence, it is usable even on a wide conveyor.
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 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.
Electric power saving *
The EX-10 series achieves reductions in power consumption of up to 65 %. These sensors contribute to environmental friendliness.
* Effective from production in October 2010.
Waterproof IP67 (IEC)
The sensors features an IP67 rating to allow their use in process lines where water is used or splashed. Rust-resistant stainless steel sensor mounting brackets are available.
Note:If water splashes on the sensor during sensing operation, it may sense water as an object.
Incorporated an inverter countermeasure circuit*
The EX-20 series become significantly stronger against inverter light and other extraneous light.
*Effective from production in April 2011.
Identical size
Front sensing type of thru-beam type and diffuse reflective type sensors have identical appearance.
Moreover, since the mounting holes are symmetrical with respect to the beam axis center, the design becomes easy
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.
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.
Slit mask is available
ø0.5 mm ø0.020 in round slit mask and 0.5 x 3 mm 0.020 x 0.118 in rectangular slit mask are available for both side sensing type and front sensing type sensors.
FUNCTIONS
Bright 2-color indicator
A bright 2-color indicator has been incorporated in all types. (Orange LED: Operation indicator, Green LED: Stability indicator)
Two types for suitable mounting
Two types, side sensing type and front sensing type sensors are available. Select depending on the place of mounting.
Order guide
Narrow beam type
ISO 13849 -1 Category 1, PLc compliant model no. list (Note)
| 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 | ||||||
| Retroreflective | 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 reflective | 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 reflective | 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 reflective | 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.
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 type | Package without reflector |
|---|---|
| EX-29A | EX-29A-Y |
| EX-29A-PN | EX-29A-PN-Y |
| EX-29B | EX-29B-Y |
| EX-29B-PN | EX-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 type | 5 m 16.404 ft cable length type |
|---|---|
| EX-21A | EX-21A-C5 |
| EX-21B | EX-21B-C5 |
| EX-23 | EX-23-C5 |
| EX-29A | EX-29A-C5 |
| EX-29B | EX-29B-C5 |
| EX-29A-Y | EX-29A-Y-C5 |
| EX-29B-Y | EX-29B-Y-C5 |
| EX-22A | EX-22A-C5 |
| EX-22B | EX-22B-C5 |
| EX-24A | EX-24A-C5 |
| EX-24B | EX-24B-C5 |
| EX-26A | EX-26A-C5 |
| EX-26B | EX-26B-C5 |
| EX-28A | EX-28A-C5 |
| EX-28B | EX-28B-C5 |
Accessory
RF-200 (Reflector)
