Messages

551

General Mach Discussion / Re: Can two 36v power supplies be used in series to get 72v?

« on: April 15, 2009, 03:42:56 PM »

Unregulated power supply will have a drop of voltage when it has to deliver some current, this is proportional, more current = less voltage

This is not true for a regulated power supply, the voltage will remain constant even with a rush of current

Switching power supply use high frequency square wave instead of the ordinary 60Hz sine wave to produce more current is a smaller enclosure. With high frequency, this put less stress on the component, an produce less heat.

At the output of the switching supply, the current is switch back to ordinary 60Hz sine wave but this often mean more noise for component that are affected by this.


Jeff

552

General Mach Discussion / Re: Can two 36v power supplies be used in series to get 72v?

« on: April 15, 2009, 03:22:00 PM »

You're right Mr.Birt

KL320-36 is a trademark for Keling. It is the same model as the 350 series from Meanwell.


http://www.meanwell.com/search/s-350/default.htm

553

General Mach Discussion / Re: Can two 36v power supplies be used in series to get 72v?

« on: April 15, 2009, 12:54:06 PM »

Some will work and some will not, you'll have to verify the spec of your power supply. Look for a PDF file from keling.


That's what I said.

Connecting two switching power supply in series or parallel if they are not designed for that purpose can be a bad thing and you're looking for trouble

Look at the Doc file attached

554

General Mach Discussion / Re: Can two 36v power supplies be used in series to get 72v?

« on: April 14, 2009, 12:43:12 PM »

Some will work and some will not, you'll have to verify the spec of your power supply. Look for a PDF file from keling.

You can't use a step up transformer to crank up voltage from a DC source, you're looking for disaster, transformer only work for AC voltage

555

General Mach Discussion / New install of Mach3 and now probe won't work anymore

« on: April 10, 2009, 04:24:03 AM »

Hi

This week I had to re-install Mach3 because to much trouble after installing a plugin for a Shuttle Express.

My probing Macro as well as my tool setter macro were working very well.

Probe work great in X and Y direction

For the probing in the Z direction, detect OK, retract but instead of retracting to the value of the GetVar(2002), which is suppose to be negative, the Z axis want to continue pass the Z home switch because when I

check what is the Var 2002, I get a positive value which is not suppose to be like it, it should be negative since the Z axis have been referenced.

Before re-installing Mach3, I made a copy of all my macro so they are all identical.

Don't know what could be the problem and why I get the positive Variable.

Thanks, Jeff

556

Show"N"Tell ( What you have made with your CNC machine.) / Re: HD clock designed using Aspire

« on: April 09, 2009, 03:23:44 AM »

Hi, this is very nice work.

Could you explain how you made it, Is this acrylic (Lithophane)?

Would really appreciate more info about that,

Again, Very well done,    Jeff

557

PoKeys / Re: Somebody had sucess with pokeys, pot and feed override

« on: April 05, 2009, 12:25:00 AM »

Hi Hood

Just a couple of question.

I try to analyse these brains you had posted as SROFRO100, FRO100, and NewFROfeedhold

Could you explain  the I > 665.000 and  I < 693.00 ( Where did you took these number 665 and 693)

Why there's a Invert Flip Signal and could you explain the Formula

Also, where I can find these OEMLED:2223, 2222, 2000. because on the EXCEL sheet I have, OEMLED stop at 855.

Sorry about that, I know this is a lot of questions but soon I'll understand and stop asking for that,,


Thanks so much, Jeff

558

FAQs / Re: How much G-code with the trial download?

« on: April 04, 2009, 02:01:49 PM »

HI, I think you only have to place the Licence file in your Mach3 folder in order to get it work.

Mach3 is limited to 500 lines of code in the trial version and this number is lower in the lathe mode

559

PoKeys / Re: Somebody had sucess with pokeys, pot and feed override

« on: March 31, 2009, 07:26:11 PM »

Hi, Thanks Hood.

Will try these. I would really like to get it work as I'm used to work like this on real machine that have pot for feed rate and spindle speed. It so easy to use it, because when tool reach near the piece,

you just turn the feed down and when you are sure of your program, you simply turn it up to 100%

But I'm not sure how to do it with Mach3 but will try what you said for sure, Thanks, Jeff

560

PoKeys / Somebody had sucess with pokeys, pot and feed override

« on: March 27, 2009, 03:21:07 PM »

I'm more interested in the fast feed override and for sure with feed override.

I'm not good at all writing Macro and Brains but would like to get info about that.

I have my pokeys and all the switches and pots necessary for that, all I need is some sort of HOW TO.

Thanks for any advice.

Jeff