CNC port arc voltage dividers

[cobretti]

I am just about ready to wire up my CNC port but have a question about the pinouts. The included quick start manual only showed the port pinouts but no real explanation of anything.

There are 2 arc voltage divider settings - when do I use this and what is it's purpose.

Thanks in advance!

Attachment 1963

[geezer]

ARC voltage divider connections come into play when you have AVHC, otherwise you don't need them if you have a fixed height torch

[cobretti]

great thanks geezer.

[performance]

Although I am not a electronics guy, I believe one of the arc voltage dividers is used to determine to read the transfer of the arc.

[everlastsupport]

I've not tested the connector yet. But this is my take as an electronics guy. Use this information at your own risk as it is untested by me and just from looking at the diagram.

So this is just to get you in the ballpark on CNC hookup and you really should call your CNC controller manufacturer and tell them what I/O and signal pins you have and let them assist you. If someone want to send me a CNC table/controller setup to confirm it on I am more than willing?

1) You have the start-stop (Pins 1-2 you short with a relay contact "input" from your controller to start and stop the cutting process)

2) You have ok-to-move (Pins 9-10 "I am assuming, so test it with an ohm meter" a N.O. output relay contact for the cutter to tell your controller to start running your CNC motors and process).

Like Geezer said, the above two are probably all you need for most low cost cutter controllers.

3) You have the full arc voltage (DC pin 5+ and 7-)

4) Divided arc voltage (DC 4- and 6+) for higher end machine that require it (1/16 and 1/50 via jump inside the machine).

There's a jumper inside the machine (on small board in the rear top of the machine that has CNC in big letters and goes to the CNC connector on the back) to set the divided arc voltage. You can have 1/16 of arc voltage (jumper on) or 1/50 of arc voltage (jumper off). It will show this lower percentage of the full arc DC voltage on pins 4- and 6+. Not sure what pin 3 does just yet.

Other notes

If you have an electronics background and require another divisor, you can "probably" do it with an external voltage divider on arc voltage pins 5+ and 7- or the divided down pins 4- and 6+, with two 1/4 watt resistors. 4 or 7 would be your ground (-), middle of the divider would be the new (+) divided arc voltage.

Before wiring divided arc voltage or anything to your CNC controller, I would take a DVM and check them "if you for some reason chose not to contact your CNC controller vendor".

If you made your own controller, we hope this helps. We will update this information if we find or hear anything different.

[Randy]

Attachment 1990Attachment 1991
I am trying to hook my new 60c plasma up to my cnc . I posted pics of the control board and the diagram it came with . can you help me with this

[Rodsmachineshop]

Attachment 6648found out this diagram is wrong pulled my cnc arc divider card out of my everlast plasma cutter pin 5 is 2k instead of 100k but pin 7 is 100k its rite

[everlastsupport]

Attachment 6648found out this diagram is wrong pulled my cnc arc divider card out of my everlast plasma cutter pin 5 is 2k instead of 100k but pin 7 is 100k its rite

If the two were reversed that would make his machine close to what the burntable people want in the first place. And the idea on the jumper would be shot in the foot as well if not 100K on both.

Rod, as I do not have this board and you do (well I have it, but I am not ripping my machine out of the rack and talking it apart). Maybe Ray can look or Oleg can mail me one. Rod can you ID the two resistors.

Better idea might be short them both out jumper clips (no mods to the machine that he is worried about) and add a 100K external to the control board line as needed?

Can you ID the resistor for 5 and 7.

[Rodsmachineshop]

pin 5 is a 2 k resister not a 100 k and pin 7 is 100k resister so that pic of card is wrong . pin 5 resister is bands red -black -red - gold that 2k bet if you replaced the 2k with a 100k would solve your problem on pin 5

[Rodsmachineshop]

never jumper a resister can short stuff out adding more resisters ok but removing can fry components in a circuit board since like the relay on board is tied into some of the resisters . i think if he takes the 2k and replaces it with a 100k would fix his problem

[Tacoma747]

I don't really mind going inside the macine to change things, or solder in a different resistor or something, but I want Everlast to tell me exactly what to do, basically so if it doesn't work or fries something it won't void the warranty. I've done plenty of soldering, some on circuit boards, etc, but I just don't want to modify anything without prior consent.

[everlastsupport]

I don't really mind going inside the macine to change things, or solder in a different resistor or something, but I want Everlast to tell me exactly what to do, basically so if it doesn't work or fries something it won't void the warranty. I've done plenty of soldering, some on circuit boards, etc, but I just don't want to modify anything without prior consent.

We don't make CNC tables and controllers. Many people use our machines on CNC tables.

Can the CNC people have you take a measurement and tell us what they need changed for their controller? That would help Everlast tell you what to do, rather say Everlast needs to fix this. You need to tell us what the fix? We did not make their controller and do not have one or know nothing about their controller. We make plasma cutters and have certain ratios as in the printout.

I have already said jumper the two R's (on pins 5 and 7) and add what they want if that helps (after 3 posts Rod figured it out too).

Call 877-755-9353 ext 201 (toll free) and get Oleg to OK modding the machine if you are worried and you are golden far as breaking something.

Rod, thank you sir for popping the board out. I would just ohm out pin to resistor.

Ray can you confirm the two resistors he needs to short out? It would take a week for me to get one here.

[Rodsmachineshop]

hey was thinking yes could do that but just jumper resister for pin 5 and put a 100k resister inline on pin five wire connecting at back of machine and leave 7 alone since has a 100k resister already

[everlastsupport]

Right, jump out value and add your own. No mod to the machine and the CNC people have the numbers they want.

[Rodsmachineshop]

cant figure why they didn't give more divider voltage choices when making this card. what i like about the card i post from the cad store it also has adjustable pots to fine tune the card

[undercut]

If designed right, a single support system will be fine.