MASSO inputs... only PNP or NPN also

[skibbe]

Do the inputs only accept positive voltage to trigger (PNP)? or can we ground the inputs to trigger them as well (NPN)?

 

[masso-support]

Hi @skibbe

You can use either PNP or NPN sensors. If you use NPN then you need to provide a voltage to the input through a pullup resistor and the NPN sensor will ground the input taking it low. You can then invert the input to make it work as you want.

I use NPN sensors on mine, inverting the input and they have built in resistors which made wiring them easy.

Hope this helps

Cheers

Peter

 

[skibbe]

What's a good value for the pull up resistor? 5.6k?

 

[cncnutz]

Hi @skibbe

5.6K is a good all round value to use.

I wrote a document on the weekend that might help with identifying and wiring homing sensors. Have a look and see if helps.

Cheers

Peter

 

[segoman-designs]

Quote from CNCnutz on November 18, 2019, 8:49 pm

Hi @skibbe

5.6K is a good all round value to use.

I wrote a document on the weekend that might help with identifying and wiring homing sensors. Have a look and see if helps.

Cheers

Peter

Peter,

What is the recommended watt rating for these resistors?

Thanks

 

[cncnutz]

@segoman-designs

It really doesn't matter as these are logic levels only and worst case scenario you couldn't even pull 1/8th of a watt.

If you go 1/4 watt you will be good.

Cheers

Peter

 

[cnc-maker]

That is a brilliant, easy to use matrix thanks Peter,





thanks heaps for all your work,



regards, Warren.

 

[Michael Orlik]

Must use the resistor for input switches to? I think so...

Regards from germany
Michael

 

[spudgun]

Peter, you are a legend mate! That document was awesome. Thank you!

 

[cncnutz]

Thanks Spudgun, glad it helped.

 

[spudgun]

Hi Peter, Ive also been watching your videos on getting me up to speed on the MASSO. They are brilliant. I love how you intentionally show things going wrong to show what to do to fix them. Extremely well presented and easy to digest.
I was wondering whether there was a video on configuring the X,Y and Z motors?

 

[cncnutz]

Thanks Spudgun,
The problem is that you don't learn when thigs go right. Only when you do it wrong and have to sort it out do you learn.
There are no videos on motor configuration.

Cheers Peter