Regarding Proximity sensor that we purchased

Dear Sir,

We have purchased a sensor i.e. Contrinex Photoelectric Sensor, C23 (20 x 30mm) Housing, Through-Beam (Receiver), 0 - 30000mm Operating Distance, PNP, Changeover/IOL. We are using a 4-Pin M8 female connector to operate it.

We are facing some problems with it.

The problem with the sensor is that when we are supplying 12 V DC power to it, there is no indication of LED glow or the current load on it. We studied a lot about the sensor.

Does it require another sensor with it to activate it?

Please help us in solving the issue. We are unable to operate it.

Any help will be highly acknowledgeable.

Thank you

Top Replies

dougw over 3 years ago

Contrinex documentation seems to be very lacking in application data or examples. This appears to be a through-beam model which would imply the LED source is separate from the sensor and the object to be detected passes between the LED and the sensor, blocking the LED beam from reaching the sensor. If this is the case, the sensor would not emit light. You could try shining a red LED into the sensor to see if it acts this way.
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beacon_dave over 3 years ago in reply to dougw

Link to datasheet available here:

https://www.molex.com/pdm_docs/ps/1202540028-000.pdf

Looks like there are 3 emitters available, matching M8 connector highlighted.
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shabaz over 3 years ago

Hi,

The connector looks not squared, is it not properly screwed on? AliExpress M8 are a strange thing, they don't feel a good fit. I don't know if this is from a distributor, or ebay etc.

Also, is it correct code (i.e. Code A I think).
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Nadeem over 3 years ago in reply to dougw

Thank you for your reply, Sir. I am supplying 12V DC through a rectifier and the load current is 10mA. According to the datasheet, the current output is 100mA.

Here is my question- Does it require any transmitter part to complete the process of detection?

By using your method of shining a red laser light into the sensor, we found a green LED was blinking over it.
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dougw over 3 years ago in reply to Nadeem

The green LED means it detects an object, so this means you need a red LED (or laser) shining at the sensor to make the system work. It will detect objects passing through the beam between the LED and the sensor.

The 100mA output means it can supply up to 100mA to a load when an object is detected.
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