[RufusToad]

Hi all,

I actually have 2 hopefully easy basic questions. I have an older 4x4 Avid CNC and I am upgrading to a new VFD spindle. I am struggling badly to find a wiring diagram (if you know where I can get one PLS let me know). I have an older ethernet smooth stepper motion controller with the C10 breakout boards.
Q1, Since this is only 5v must I use a relay for the ON signal because the VFD has a 24v signal out from the MI1 back to DOM OR is there a relay in the C10 board that I am not aware of that can handle this?

Q2, Why can I never get the PWM reference voltage in Mach3 to change as it is always on a 5v signal. I believe I have all the correct settings in Mach but I am obviously missing one somewhere. I put a couple of quick snips to see in case someone had a thought

[mactec54]

Hi all,

I actually have 2 hopefully easy basic questions. I have an older 4x4 Avid CNC and I am upgrading to a new VFD spindle. I am struggling badly to find a wiring diagram (if you know where I can get one PLS let me know). I have an older ethernet smooth stepper motion controller with the C10 breakout boards.
Q1, Since this is only 5v must I use a relay for the ON signal because the VFD has a 24v signal out from the MI1 back to DOM OR is there a relay in the C10 board that I am not aware of that can handle this?

Q2, Why can I never get the PWM reference voltage in Mach3 to change as it is always on a 5v signal. I believe I have all the correct settings in Mach but I am obviously missing one somewhere. I put a couple of quick snips to see in case someone had a thought

What VFD Drive do you have, there is more than one way to control them normally

Your setting in Mach3 Spindle is incorrect, PWM can only be a max of 100 and 30% should be (0), PWM=100=10v

[RufusToad]

Hi mactec54, I have the Delta VFD022EL21A
10/4 on the PWM, I will make the change

[mactec54]

Hi mactec54, I have the Delta VFD022EL21A
10/4 on the PWM, I will make the change

Which C10 Breakout Board do you have, is from CNC4PC? or some other, you would see the Relay if it was on the Breakout Board post a Photo.

[RufusToad]

AH that makes sense now that you say that. I do not see a relay on here? So a question would be is there a different breakout board I could use OR is it just as easy to install a 24v SSR in the cabinet?? Probable no advantage for getting a new board is there?

[mactec54]

AH that makes sense now that you say that. I do not see a relay on here? So a question would be is there a different breakout board I could use OR is it just as easy to install a 24v SSR in the cabinet?? Probable no advantage for getting a new board is there?

Just get a DC Relay that suits you C10 output, as the Relay does not see any voltage on the output side, it is just a switch between the MI1 and DCM

Something like either of these will work, the SSR being a little more expensive, a better all-round choice.

[mactec54]

I don't see the spindle setup in the Smooth Stepper it should have a box like this.

[RufusToad]

Is this what you are looking for?

[mactec54]

Is this what you are looking for?

Correct the PWM should be 100 not 599

[RufusToad]

Correct the PWM should be 100 not 599

10/4 I will make that change and see what happens


"The only way to check the output 0-10v is by using MDI and type in M3S12000 this would give you around 5v M3S24000 should give you around 10v"

I have done this many times and cannot get the voltage to change. It is always 5v which is why I am really lost on.

[mactec54]

10/4 I will make that change and see what happens


"The only way to check the output 0-10v is by using MDI and type in M3S12000 this would give you around 5v M3S24000 should give you around 10v"

I have done this many times and cannot get the voltage to change. It is always 5v which is why I am really lost on.

Then it is a configuration problem something is not correct with the pin selection

Check it from the C10 Board first than add the SmoothStepper

[mactec54]

The step Pulse / Dir Pulse is directly proportional to the output voltage, so you may have to change these numbers to get the output voltage you need

Have you set the pulley ratio?

[RufusToad]

I have to back track on that one pic. I posted the wrong one and I just noticed it. sorry !!
I am finally working in PWM and I have no clue how. I have literally worked on this possibly 50 times but for the most part I am set. '

I rescaled my VFD to 7.2v at 100% which I am confused as to why such a large voltage drop but it's working.

So this spindle is 18000 max rpm at 600hz. I am now there after I rescaled the VFD, but I am short on my midpoint voltage, and I only see 3.26v and it should be 3.6v. Is there a way to scale the midpoint voltage in Mach?

I am also noticing a few status errors saying Too Fast For Pully Using Max... Using Max. not really sure what this means either.

[RufusToad]

Hallelujah I think I found it. Its not exact yet but I am getting better.
I had the Pullys at 1 and MIN RPM at 3000 with MAX RPM at 18000 which is correct but I changed that 3000 to 0 and the mid point voltage came up almost .35v. I have no clue that was calculated in the equation, but it seems to be. I'm getting there

[mactec54]

Hallelujah I think I found it. Its not exact yet but I am getting better.
I had the Pullys at 1 and MIN RPM at 3000 with MAX RPM at 18000 which is correct but I changed that 3000 to 0 and the mid point voltage came up almost .35v. I have no clue that was calculated in the equation, but it seems to be. I'm getting there

I was just going to reply to have you check the pulley settings, yes that should be 0 and 18000 ratio 1. some have changed this ratio also to change the voltage output

The voltage coming from the C11G must not be linear and definitely something wrong with the max 10v output.

[dazp1976]

Those C11G boards are stupid and overpriced.
They look like they have a lot of functions but at the end of the day you still only have 12 outputs and 5 in.
Jumpers and relays just confuse things where it's a case of, use pin no* for this or this but you can't do both!.

You would've achieved exactly what you wanted using one of those <£10 5axis bobs you see all over the place.
They're simple to wire and work. I used one for 5 years!.
Those also can go up tp 24v power input for pwm control. With some drives 12v input to the controller is not enough for analog to work properly as you're finding out.