Need Help!- Connecting Breakout board to Inverter/speed controller

[Xye]

Hi. I'm soo nearly finished with my cnc machine!

one or two problems still remain though.

I have my breakout board (manual)

and inverter (manual part1 part2 )

I just don't know how to connect the two together.

I'm aware this may be impossible if this proves to be the case would I be able to rig a stand alone speed controller?

[Xye]

Ok I've connected my VFD to my breakout board but cannot seem to get mach to do anything.

Attached are pictures of the terminals of both. I have wired:

Vin to +10V
Out to FiV
0V to GND

CP1 to FWD
CP2 to GND

If I'm honest this was just my best guess at what should go where.

problem is i'm not sure if I'm not setting it up right in Mach or if i've wired it wrong so it can't work....

[Bubba]

Have you:
1. Made the appropriate configuration changes in Mach (and rebooted)?
2. Made the appropriate configuration changes in the VFD itself to recognize the inputs from an external source?

Just a couple of thoughts.

[Al_The_Man]

You can also check the voltage between gnd and FWD to see if it goes to zero and check the analogue input from 0v to FiV, it should be anything above 0v to run, max 10v.
Al.

[Xye]

Originally Posted by Bubba Have you: 1. Made the appropriate configuration changes in Mach (and rebooted)? 2. Made the appropriate configuration changes in the VFD itself to recognize the inputs from an external source? Just a couple of thoughts.

I wouldn't know what the appropriate changes (in either case) would be. The Breakout Board manual seems rather sparse on information and the VFD I'm finding rather unfathomable at the minute.

Originally Posted by Al_The_Man You can also check the voltage between gnd and FWD to see if it goes to zero and check the analogue input from 0v to FiV, it should be anything above 0v to run, max 10v. Al.

I've not checked this yet but I can't even get the spindle to turn at the minute.

[Al_The_Man]

Originally Posted by Xye I've not checked this yet but I can't even get the spindle to turn at the minute.

But this will tell you if at least Mach is outputting the right signal!
I assume you have had it turning in the manual keypad mode at the VFD?
Al.

[Xye]

Originally Posted by Al_The_Man But this will tell you if at least Mach is outputting the right signal! I assume you have had it turning in the manual keypad mode at the VFD? Al.

Good point.

I've not actually managed to run the spindle from the VFD directly though it has been running in the original configuration i received it in. (I changed out the breakout board for something that Mach could control)

[Al_The_Man]

It looks like P102 should be set to 1 for external control?
If you switch to local keypad then it should ignore any status of the BOB.
Al.

[Xye]

ok. I have it set to P102 and 1.

Maybe something of interest to note? When the machine is on and Mach is not running on the computer I have an F value on the screen that hovers around 69 to 70. When i start mach this F value goes to ~350

GRD - Fwd = 10v

Ov - FiV = 3.5v

[Al_The_Man]

One, you should not have anything at all when Mach is running, (it is best to set up the charge pump) this may disable the BOB, not sure what effect on the PWM though.
It sounds like you are getting a spurious output from the BOB?.
Is the spindle turning? if not you are not getting 0v between FWD and GND.
Al.

[Xye]

Originally Posted by Al_The_Man One, you should not have anything at all when Mach is running, (it is best to set up the charge pump) this may disable the BOB, not sure what effect on the PWM though. It sounds like you are getting a spurious output from the BOB?. Is the spindle turning? if not you are not getting 0v between FWD and GND. Al.

The spindle does not turn under its own power at all.

It may be that VFD is set up wrong (as i mentioned this is a conversion to Mach3) In which case i need to reset the VFD somehow?

What is Charge Pump?

[Al_The_Man]

1/ You need to get the VFD running in local mode off the keypad first, if it runs at most of the default setting then all you should need to do is set P101-1 P102-1 as I see it and then Mach should have control.
You can also set the VFD back to factory default at any time by parameter.
The Charge pump is meant to disable the machine if Mach is not running or a PC crash.
I much prefer to set it up in the E-Stop string.
But it looks like it just controls the step/dir outputs. Edit: It also has relay output for E-stop
I suggest you read through the manual and absorb as much as possible, most of the par. can be left at default.
Al.