5 axis BoB spindle control help needed

[cropwell]

You can find the manual on my dropbox https://www.dropbox.com/s/gfq4isvihn...rd-EN.pdf?dl=0 if it helps.

[Noddy]

Thanks for that, it has a lot more info than the manual I had.

I'm still not entirely sure if I have it connected correctly or not



I have the X1 (FWD) wire from the VFD connected to pin 17
I have the COM wire connected to the GND port on the board
I have the 0 - 10V wire connected to the + port on the board

[cropwell]

Hi Noddy,

I am sorry that I cannot advise you from experience. I use this board, but only to switch a Kress using an external relay board controlled from a spare output (A or B step, but I can't remember which).

If you have a multimeter set it to volts DC range 0-20v and I would put it on the + and GND to see that you get a voltage up to 10v proportional to the speed setting in Mach3. If that is not so, then you need to look at Mach3 settings. If it is OK then you need to check the VFD connections and parameters.

That multimeter check should indicate which way to look (first).

Cheers,

Rob

[Noddy]

Thanks Rob, I'll give that a go and report back - it's Nanny and Granddad have the kids day today, so won't be able to check until tomorrow, I'll be too knackered to look later lol.

Cheers,
Jim

[cropwell]

it's Nanny and Granddad have the kids day today, so won't be able to check until tomorrow, I'll be too knackered to look later lol.

~Know the feeling !

[Noddy]

Well, I'm kind of getting there. I can control the speed from the board now, but I can't turn the spindle on/off. If I change the VFD settings to start the spindle from the front panel, it works.

There are three possible settings for the spindle on/off control;

0 = front panel control
1 = analogue terminal control (which it should be to control via Mach3 from the info I have)
2 = communication control

I've tried all three with no luck with switching the spindle on/off in Mach3, this kind of defeats the object of the exercise if I can only control the speed.

I have checked continuity of the cable, which is fine. I can hear the relay on the BoB operating, and the relay LED lights up on the board when it's energised. I have 24v and USB 5V supply to the board, and have checked both Voltages (24.06V and 4.94V), which are fine. The spindle speed pins are putting out 0 - 9.6V depending upon the speed setting, and the speed of the spindle rises and falls in line with the voltage/speed setting within Mach3 as expected.

Can't think of sod all else - any ideas??

Edited to add; my machine came with a four pin plug on the VFD, but only three core cable was used from the control box to the spindle. I changed this to four core to add the earth wire, and soldered a wire from the earth pin in the spindle and earthed it. I also added an earth wire from the earth pin on the VFD to the earth pin on the back of the spindle socket on the control board.

[komatias]

The spindle speed pins are putting out 0 - 0.6V depending upon the speed setting, and the speed of the spindle rises and falls in line with the voltage/speed setting within Mach3 as expected.

Should that not be 0-10V?

[isolt]

Noddy how did you get the speed control working on this board?
Mine turns on and off via the relay OK but I can't figure out how to get 0-10V out of it?

Thanks