Npn to pnp signal converter

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To participate you need to register. Registration is free. Click here to register now. Register Log in. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Thread starter arunb Start date Aug 15, Status Not open for further replies. I could use a PNP type sensor instead, however I have lot of stock with me, I don't want to buy a new part.

And since there is extensive re-wiring involved for converting the input port to PNP, I think it would be easier to just connect some pull-ups instead. Funnily enough, I've recently been involved in making equipment to connect to PLC's and I've never even seen one!

We sent him a sample, and he got back in touch, and all is working fine now As you've surmised, if you need a SOURCE PNP input, you just need a pull-up resistor to 24V - but you need to bear in mind that the polarity is then reversed, which you can easily change in the PLC programming. This diagram from my tutorials shows how, the sixth diagram on the page: In that diagram, the NPN transistor would be the one inside your sensor, just the PNP and the two resistors are required, and 24V from the PLC rather than the 12V in the diagram of course.

Here are the input specs from the PLC manual :. Does the PLC provide its own input current limiting, or are external resistors required for current limiting? Click to expand Business Hours. Already A Customer? Sign In Here. I am a returning customer. Here is my email address for use just with this order:. Click now to display this product's available stock level. Click now to add this product to your shopping cart.

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If sensors are used in your equipment or control systems, having these signal converter modules like this NPN to PNP converter readily available could effectively eliminate the last-minute problems that you encounter when your controller and the type of sensor you are using have a mismatched signal.

This signal converter is designed to convert NPN signal to PNP and is equipped with surge absorption and over-current protection to further protect your device.