MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Structure & Mechanics > 50. Toolheads
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #1  
Old Thu 18 September 2008, 19:32
waynec
Just call me: Wayne from White Salmon
 
White Salmon, WA
United States of America
Wiring the VFD and Spindle

OK, I took the plunge and bought the Chinese 3 hp spindle. It came with a VFD, and is water cooled. From apperance, it seems very solid and much beefier than my Porter Cable.

My question is, what sort of wiring should I use between the Mach 3 controller and the VFD, and between the VFD and the spindle?

I see from the diagrams in the manual that I should use shielded cables, but nothing about the gauge of wire.

I assume that the voltage of the wires between my controller and the VFD will be around 5-10V, with less than .5 amps. This is what I expect from control or digital circuits.

I also expect that the volts and currents to the spindle will be considerably higher. At 220 V 3 phase, the spindle will need good sized wire to carry the current without heating up. Would 12 gauge wire be adequate?

I got my CNC4PC voltage control interface today, so I'm ready to start wiring up things this weekend.

Gotta go read the manual again. But if any of you know what size wire I should use, please let me know.

Thanks as always. I'll take some pics and post them this weekend. I'm sure there are others interested in these lower cost spindles.

Wayne from White Salmon
Reply With Quote
  #2  
Old Thu 18 September 2008, 22:58
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Quote:
Originally Posted by waynec View Post
I also expect that the volts and currents to the spindle will be considerably higher. At 220 V 3 phase, the spindle will need good sized wire to carry the current without heating up. Would 12 gauge wire be adequate?
Because you are getting the VFD and spindle as a set, the actual voltage and current between the VFD and spindle are unknown to us. Your supplier will have to tell you the wire gauge, or failing that, you should find a plate on the spindle showing max current in Amps.

(my gut feel is that 12 gauge is almost too thick (definitely "adequate"), but needs to be confirmed with hard facts)
Reply With Quote
  #3  
Old Thu 18 September 2008, 22:58
javeria
Just call me: Irfan #33
 
Bangalore
India
Ya Wayne - a lot of us are interested!

do post pics - where did ya get it from and what price?, may be you can reply for this on teh eastern spindle at lower price thread.

G' delete this post after a day pls.

Also you need a step and direction pulse from the parallel port - are there enough outputs with you now?
Reply With Quote
  #4  
Old Thu 18 September 2008, 23:02
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Sorry Irfan, I don't play secretary around here.
Reply With Quote
  #5  
Old Thu 18 September 2008, 23:09
liaoh75
Just call me: David
 
Taibao
Taiwan
Wayne from White Salmon,

May I ask what the watt rating on your spindle? Is it 2200W spindle? Thanks
Reply With Quote
Reply

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 15:33.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.