MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Electrical & Electronic > 70. Control Systems
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #61  
Old Sat 11 October 2008, 12:07
javeria
Just call me: Irfan #33
 
Bangalore
India
G I was assuming that since I will be using a spindle control card, the E stop would pulse from mach and stop the spindle.

Thus I can use a lower amp'd contactor and save some cash,

however i will go the regular way and power the vfd from the contactor - just to be double sure.

RGDS
Irfan
Reply With Quote
  #62  
Old Sat 11 October 2008, 12:12
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Also then, a false pulse (error pulse) from Mach could also start the spindle by mistake . . . . .

You cannot trust Mach to have the final decision on whether the spindle runs or not. The spindle is probably the most dangerous part of your machine.
Reply With Quote
  #63  
Old Sat 11 October 2008, 12:25
javeria
Just call me: Irfan #33
 
Bangalore
India
Yes Sir, I am surely going your way
Reply With Quote
  #64  
Old Sat 07 August 2010, 08:32
tomasptacek
Just call me: Tom
 
Prague
Czech Republic
Mounting of G203V

Hi all, is it big problem to mout G203V on the same metal plate as the rest of components in control box (see picture) ? As i can see almost all of you mount them on separate alu plate. Thaks Tomas
Attached Images
File Type: jpg G203Vmount.JPG (63.5 KB, 1504 views)

Last edited by tomasptacek; Sat 07 August 2010 at 08:39..
Reply With Quote
  #65  
Old Sat 07 August 2010, 08:50
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Tom,
The reason for mounting separate is not a physical space issue, but a thermal issue. The separate plate allows for the drives to heatsink and cool. The additional plate allows for better area contact from surrounding air, thus cooling the devices.

The Gecko's run fairly cool, so you may be okay.

I reread g203v manual and it doesn't have specific heatsink requirements, but cooler is better.

Sean

BTW, nice transformer....did you make that yourself?
Reply With Quote
  #66  
Old Sat 07 August 2010, 09:11
tomasptacek
Just call me: Tom
 
Prague
Czech Republic
Sean, thanks for reply. I made top of transformer today morning. I plug it in and measure 33,7 VDC on capacitors. I expected 35VDC and I am not sure if it is enough for my Oriental Motors.
Have a nice day
Tom
Reply With Quote
  #67  
Old Sat 07 August 2010, 09:26
KenC
Just call me: Ken
 
Klang
Malaysia
did you check your main supply voltage? it is perfectly acceptable to have a +/-10% fluctuation.
In real life, nothing is smack on... especially in engineering stuff...
Reply With Quote
  #68  
Old Sun 08 August 2010, 08:34
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
33,7 ( you should be fine )
Reply With Quote
  #69  
Old Wed 02 May 2012, 15:03
Guillermo
Just call me: Guillermo
 
Puerto Ordaz
Venezuela
Hi all.

I am planing the join of this alu pieces for building the drivers heat sink.

They are 2 mm thick

Any coments ???
Attached Images
File Type: jpg alu heat sink.JPG (35.8 KB, 829 views)
Reply With Quote
  #70  
Old Wed 02 May 2012, 21:29
domino11
Just call me: Heath
 
Cornwall, Ontario
Canada
Not sure how that will make a proper heatsink.
Reply With Quote
  #71  
Old Thu 03 May 2012, 02:22
Axel1966
Just call me: Axel
 
Paris
France
I agree. Through, real heat dissipators are realy cheap.
Reply With Quote
  #72  
Old Thu 03 May 2012, 10:26
Guillermo
Just call me: Guillermo
 
Puerto Ordaz
Venezuela
Ok, in next days il make a test and feed back
Reply With Quote
  #73  
Old Thu 03 May 2012, 13:56
Axel1966
Just call me: Axel
 
Paris
France
If you don't weld them, you must fix them tight and use some heat conductor fluid,
like those used in computer CPU/fan mount.
But I still believe the "wings" are not thin and long enough to produce the expected result.
Reply With Quote
  #74  
Old Thu 03 May 2012, 23:22
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Modern drives have very little wasted heat. The stories about big heatsinks for drives come from 10 years ago.
Reply With Quote
  #75  
Old Fri 04 May 2012, 22:08
Guillermo
Just call me: Guillermo
 
Puerto Ordaz
Venezuela
Hi all.

After reading and reading, I have not found information about

the drivers fan specs and its wiring diagram.

Can someone help me with this and a suggested fan model.

Thanks
Reply With Quote
  #76  
Old Sat 05 May 2012, 02:03
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
See:
first posts on MechMate DIY Control box full spec screened spindle 3phase

and

Cooling fans

For a cooling system that works. It has no fins on the heatsink. The drives are cool all the time.
Reply With Quote
  #77  
Old Sat 05 May 2012, 06:33
Guillermo
Just call me: Guillermo
 
Puerto Ordaz
Venezuela
Ok, now i am clear about heat sink and fan

Thanks Heath, Axel and Gerald.

Hope see all you in next questions.
Reply With Quote
  #78  
Old Sun 07 April 2013, 05:17
Hardouin
Just call me: Hardouin
 
Douarnenez
France
VFD mount

Hello !

I am planning to build my control box.

I would like to know if I can put the VFD inside or is it better to put it in a separate box ?

Also, I am looking for a VFD and can you tell me what "HP" means in VFD specifications.


Thank you !


Hardouin
Reply With Quote
  #79  
Old Sun 07 April 2013, 07:18
sailfl
Just call me: Nils #12
 
Winter Park, FL
United States of America
I think it is better to put the VFD outside the controller box. Keep the line noise that the VFD and Spindle wire is generating away from the controller box.
Reply With Quote
  #80  
Old Sun 07 April 2013, 17:50
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Outside if you can. It just takes one more noisy thing away from the others.
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Control box cases/enclosures (only the outer, empty box part) vadeem 70. Control Systems 32 Mon 27 September 2010 14:58
New MechMate painted, with experimental control box - Atibaia, Brazil zetacnc MechMates already cutting 48 Tue 13 July 2010 00:37
Low Cost DIY Spindle Motor Rad Racer 50. Toolheads 9 Sun 05 July 2009 08:56
CandCNC.com control box components and full box solution Gerald D 70. Control Systems 7 Wed 22 August 2007 12:47
Bob CampBell's control box components and full box solution Gerald_D 70. Control Systems 7 Sat 18 August 2007 18:38


All times are GMT -6. The time now is 08:59.


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