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Ultra-compact Photoelectric Sensor EX-20 Ver.2

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Basic Information

Sensing characteristics

Cautions For Use

Miniature-sized and still mountable with M3 screws

Ultra-compact Photoelectric Sensor EX-20

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-20 series achieves reductions in power consumption of up to 65 %.
These sensors contribute to environmental friendliness.

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.