forum.cncdrive.com

Hi Guys,

I'm looking for a bit of help with wiring up my spindle to my UB1

I'm looking to use PWM on the UB1 board.

My understanding is the following:

10v from the VFD - AH1 on the UB1
0v From the VFD - AL1 on the UB1
AO1 from the UB1 - AI on the VFD

In the UCCNC manual p24 it states the PWM software setup should be pin 1 Port 4. Is this correct for the above wiring? if so I'm confused as to why its port 4 as AH1,AL1 and AO1 are marked as port 3 on the board?

I'm sure I'm just missing something here.

Thanks Paul

In the UCCNC manual p24 it states the PWM software setup should be pin 1 Port 4. Is this correct for the above wiring? if so I'm confused as to why its port 4 as AH1,AL1 and AO1 are marked as port 3 on the board?

Yes, it's correct.
I don't see anything that says the analog pins are part of port 3. And they aren't, as they have nothing to do with port 3 of the UC300ETH. They are part of the speed control circuit.

Thanks Ger21. Appreciate your reply. I was assuming they were on port 3 as its got CN3 next to it. Think this is whats confused me.

Thanks
Paul

CN3 is not port 3, it's the 3rd row or group of terminals.

Thanks for the help.

Paul