Which contactor and snubber

[cncsnw]

"Everybody" does not wire their control cabinets the same. What service you bring into the control cabinet depends entirely on the power requirements of the components you choose to put in your control cabinet. Some work with 120VAC single-phase. Some work with 240VAC single-phase. Some work only with 240VAC 3-phase.

I suspect you do not have a clear view of what the contactor does, and how switching AC (or DC) power works.

One leg goes to the VFD one leg goes to the C 86,and one to the icp5

Let us suppose that you are supplying 240VAC single-phase to your VFD, and 240VAC single-phase to a Teknic IPC-5 power supply. I have no idea what a "C 86" is, so you will have to explain its function or power requirements.

Since both the VFD and the IPC-5 receive the same type of power, and both should have their power disconnected when the E-stop contactor is open, you can use two of the three poles of the contactor to switch the two legs of your 240VAC single-phase supply: two legs in, two legs out. The two outgoing legs would then be wired in parallel to both the VFD and the IPC-5.

That would leave one pole unused.

If the "C 86" uses 240VAC single-phase power, then it could just be wired in parallel with the VFD and the IPC-5, and you would not need the third pole of the contactor at all. If the "C 86" uses 120VAC single-phase power, or some low-voltage DC power, and that power needs to be switched with emergency stop, then you could wire that power through the third pole of the contactor. Alternately, if the "C 86" requires some sort of low-voltage DC logic signal that tells it when the contactor is closed, that too could be wired through the third pole of the contactor.

[Upnorth]

Yes basically everything you just explained I already know I’m asking because all the videos and everything everybody says the E stop contactor is 3 phase , it has three ins and three outs! If I need to power three things on the output side,how do I get 3 lines out of the contactor with only having 2 lines going in to it? Or do I split one of the 2 220 and make it so there are 3 going to input on contactor ?

It's sort of difficult to answer your questions. Every box is wired differently. It depends on what you have available and what you need it to do. If you lived close to here I would say bring the box over and tell me what you need it to do. Then it could be set up as required. I tend to bring in all power through a switch and breaker to the DIN rail. From there I split it up to do whatever I need. Some busses are switched, some are not. Some are part f the E-stop.

Might be best if you draw schematics of what is available and what you need to do. Written information is hard to understand and answer questions on. A schematic can be corrected and is easier to understand.

[Vwfan]

OK awesome I definitely appreciate both your guys help I am in metro Detroit Michigan I’m not really sure where you’re located, I am almost 39 years old now and it’s just now starting to sink in that it’s very difficult for me to learn things without doing them with my hands, so I think once I get this cabinet wired completed I should really have a better understanding of how it all works. Believe me I’m daily reading through all this schematics all these posts all the Facebook and YouTube videos just trying to beat it into my head so I can wrap my house head around it. By no means is this out of my ability I just get confused a little bit and really I appreciate all of your help more to come thank you

[cnckeith]

fyi for anyone reading this thread..related info is here.
https://centroidcncforum.com/viewtopic. ... 292#p47292

[Vwfan]

So I picked up a lathe over the weekend and it’s already been converted with a VFD as a very nice little control panel but it has an awesome on/off‘s contactor that the switch is on the outside of the box running a bar into the contactor inside the box I’m wondering does anybody know of any of this style that you can use and run the e stop with it also ?

[ShawnM]

That style extended rotary knob is very common on professional cnc equipment. Your e-stop needs to be in a very convenient place up top and easy to get to. Not sure where that electrical enclosure is mounted on the machine from your pics but I'd want the e-stop within an arms reach and no further. If the electrical enclosure is within EASY reach you simply drill a 22mm hole in the box and mount it in one of the sides.

[tblough]

That is a disconnect, not a contactor. You will need a contactor for the e-stop in addition to this.

[Vwfan]

That’s more so what I was after I guess I was looking to see if there was a disconnect within contactor kind of built into one but now that I understand it I may add one of these to my cabinet