The eternal doubt: Spindle, VFD, BOB How to make them speak each other?

Hi,


I'm building my first CNC, almost everything it's connect and working except for spindle control.


I bought a chinese bob but I dont know how to make my spindle, vfd and bob speak each other.


I manage to connect the VFD and spindle to work manually but I want to use mach 3 to control everything. I'm using a WEG CFW500 VFD I know to configure all the parameters but dont know how to wire the anything from BOB to VFD and spindle.


Thanks.

Spindle Control (DigiSpeed) : Homann Designs!, The preferred CNC Component Supplier

Have a look here at the Homman designs web site and I think the DC-02XL would be close to what you want. Look for the user manual where there is a wealth of info that will get you started.

I hope it's ok to reference his work here, if not I will delete this post.
Rich.

Hi did you get this connected ok in the end? could we have a look at the wiring?

Quote:

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Originally Posted by 2e0poz

Hi did you get this connected ok in the end? could we have a look at the wiring?

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Hi,

Problem solved. The breakout board wasn't working as it should be. I'd replace the bad one and everithing it's ok now.

Following the wiring diagram:

https://www.dropbox.com/s/4r9gxgd64s...81%29.pdf?dl=0

Now I'm trying to implement a charge pump circuit, any tip about that?

Thanks for that

I will be running with just 'Enable' to secure systeme on or off. Check my post about this board http://www.cnczone.com/forums/steppe...53852-cnc.html
Let me know if it helps or not.

I need to tell something else about this board. I dont know why but the 0 to +10v signal it's not a steady signal. In the begining I though that was some kind of interference from VFD but even when I'd turn on the system without the VFD the the signal isn't steady.

I would try a different GND for the analogue side instead of taking a GND form relay for the VFD

Quote:

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Originally Posted by 2e0poz

I would try a different GND for the analogue side instead of taking a GND form relay for the VFD

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Hi friend,

Did you manage to make the spindle work with this Bob?

I could make it start and stop but can't control speed.

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