Quote Originally Posted by A_Camera View Post
This is the sentence I answered: "I have found out that I cannot control the VFD via Mach with the current BOB, so need to swap for the CPO-10V from CNC4YOU."
I didn't know that was the question you were answering

All you need is to configure the UC300 plugin, Mach3 will handle it accordingly. If your BoB provides optical isolation on the digital inputs/outputs than you should be safe. I have never heard anyone putting optical isolators on the analog 0-10V to VFD. I think the VFD has that protection already. In fact, my VFD has optical isolators on the digital inputs/outputs also, and I think even cheap Chinese VFDs have that, so the VFD could be controlled safely even without a BoB. Stepper drivers are a totally different thing... not everyone of those has optical isolation. But... A BoB is necessary to have if you are using a UC300 because you need to split the signals to be able to install all the external devices.
I am new to all this electrical stuff and can only go on what I have found both off this forum and the manuals, the BOB that I have I wanted to control the VFD as you understand, but in talking to CNC4YOU they said the BOB I had was the basic one and needed the other type.
Plugin? what does this do or where can I find one?

BTW, I have the UC300 and been using it for quite a while now, and also read the manual...
I did not mean that you didn't understand what I was talking about, I had no knowledge that you used the UC300, but I am glad that you do and manybe you can advise me in the future with connections?

In fact, just looked at your cabinet picture, and it looks like you have similar drivers to mine, your CW5045 are also supposed to have optical isolators on the inputs, so even those are safe to run with direct connection, but using a BoB to split the signals is more practical, even if not necessary in your (and my) case.
Thank you for looking at my proposed build, maybe I am using the BOB and do not need it as the CW5045 have the optical isolators, I could find any wiring or interface drawings to help me......with direct connection from the UC300.
maybe if your willing you can explain how I can setup the UC300 so I do not have to purchase the new BOB as I have not done that as yet?
Hoping you can,
Ian