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Author Topic: Inductive proximity switch  (Read 3464 times)

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Inductive proximity switch
« on: June 28, 2007, 03:50:58 AM »
I have bought one on ebay, the idea is to test it as homing switch or tool lenght gauge. I see that operating voltage is 10-30V and the output will be the same minus a  drop of 1-2V.  So I'm looking for a diagram showing how to interface it to the home's pin or the input pin of the parallel port of the pc.
Any help will be much appreciated. Thank you.

Gianni

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Re: Inductive proximity switch
« Reply #1 on: June 28, 2007, 08:35:32 AM »
Hey Gianni,
    I will work on a diagraham for you. You can't take the signal straight to the parallel port. I use prox switches and use them to operate solid state relays which send a 5v signal to the parallel port. Do you know if it is a PNP or NPN switch?

Brett
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Re: Inductive proximity switch
« Reply #2 on: June 28, 2007, 09:25:30 AM »
Brett,

Very kind of you. It's a npn, RS No 249-2451.

regards,
Gianni

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Re: Inductive proximity switch
« Reply #3 on: June 28, 2007, 11:45:04 AM »
If you are using a NPN, you may not have to use the solid state relay but for safe measure, I'll assume you do. The way this is drawn, it has the + voltage for the prox. and the ss relay coming from the same source. Make sure this voltage is acceptable for both.

I hope it helps,
Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!
Re: Inductive proximity switch
« Reply #4 on: June 28, 2007, 12:19:37 PM »
Brett,

Simple and effective, thank you.
I'll let you know how it works.

cheers,
Gianni