Aluminum profile and alu plate 1500mm x 600mm x 150mm working area, first cnc.

[pierantoine]

Here is my Wiring diagram done with tinyCad and some Dean pictures

the Bob is a Mesa 5i25+7i76 (LinuxCnc)

1 A Pilz S4 is not in use but it could be if needed
2 a second Contactor could be use if necessary for the 70v steppers supply
3 The limits directly controls the safety S5 pilz relay.
4 The S5 cuts all signals immediatly and after a delay cuts the main on the VFD
5 Home could be connected to one input but i have 32 inputs so more than needed.

i've already tested the inductive sensor action on pilz s5, it works.. that may not be the best solution ?

Comments are Welcome !
thanks for your help

[Clive S]

Its nice to see other Mesa users on here. Do you need the 10V power supply ie can't this be got from the VFD if it is only for spindle speed?

I am not sure I would connect the 24V -ve to the star Gnd. I would however connect the 5v and 24v -ve together.

Make sure you have the switches on the 7i76 in the correct positions, W2 needs to be in the right hand position if you are using external 5v supply Also on the 5i25 W1 and W2 should be in the down position (default) when using external 5v to the 7i76) otherwise the magic smoke will appear. If you know this already then fine.

PNP sensors work best on the 7i76 although I do use NPN.

You might find this useful https://forum.linuxcnc.org/media/kun...2016-12-03.pdf

I could not open your drawing in acad so find it a bit hard to read.

[pierantoine]

Its nice to see other Mesa users on here.

Hi Clive thanks for your help !

Do you need the 10V power supply ie can't this be got from the VFD if it is only for spindle speed?

I didn't know this solution, I will take a look.

I am not sure I would connect the 24V -ve to the star Gnd. I would however connect the 5v and 24v -ve together.

Ok thanks that's a question i had in mind..

Make sure you have the switches on the 7i76 in the correct positions, W2 needs to be in the right hand position if you are using external 5v supply Also on the 5i25 W1 and W2 should be in the down position (default) when using external 5v to the 7i76) otherwise the magic smoke will appear. If you know this already then fine.

yes that is correct but thanks again, it could be useful for another reader of the post.

You might find this useful https://forum.linuxcnc.org/media/kun...2016-12-03.pdf

Oh Yes ! Really interesting !

I could not open your drawing in acad so find it a bit hard to read.

I've added a pdf it will be more clear