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Messages - method13

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1
General Mach Discussion / Re: Iissues with my cnc router
« on: February 02, 2014, 12:13:07 PM »
Yes I do between the transformer and the capacitor, I need to look and see what voltage it's rated for.

2
General Mach Discussion / Re: Iissues with my cnc router
« on: February 01, 2014, 09:29:55 PM »
In regards to tripping an estop, all I know is that I look up at my screen and the estop what tripped and I went to pick up the motor and it was very hot, the assumption is that they are related.

The resistor I have in the G201 is at 3A – 35.25K the motor rated current is 2.8A/phase.

In regards to my power supply it's been really bugging me the values that I got so I went back to test again and this is the result that I get.
I miss spoke about the power supply value I wrote 63v it's actually 50v.

I start with the AC in and it reads 122v then I measure the output of the transformer I get xxv dc and when I switch it over to AC I get 53v so it makes me think did I buy a AC transformer instead of a DC transformer? Then I measure at the capacitor and I get 73v DC and then I try AC and I get 154v.

At this point I'm confused, wouldn't the capacitor blow if I put AC in them? And how did my machine run with me moving it around, not running programs or anything, it was only for a short while then I blew a fuse but shouldn't that fry my drivers if it was AC?

I'm going to hook my old power supply back up and measure it and see what I get.

I will post back later.

Thanks for all your help.

3
General Mach Discussion / Re: Iissues with my cnc router
« on: February 01, 2014, 06:57:51 PM »
The wiring is correct.

I think I cooked one of the drives the capacitor smells burnt, it's the one with for the rotary axis, the motor was warm on that one too.

It's odd how it only cooked one and not all of them if the power was too much.

4
General Mach Discussion / Re: Iissues with my cnc router
« on: February 01, 2014, 06:07:56 PM »
When it was making noise it was the 3 other axis and not the rotary that were making noise, the A axis was moving quietly.

but....

When I changed the power supply I kept blowing fuses again I made a mistake and had the polarity backwards on the AC into my transformer. When I corrected it the fuses stopped blowing and I was able to move the router for a short bit until the A axis motor got hot and tripped a estop.

I did a bit of reading of the Mach 3 manual and read about active low on Page 4-2 at the bottom, the factory settings was off so active hi, I switched them on and the router ran smoothly for a short while I was testing max speeds and fuse blew again. Now it blows every time I turn the power on and I just smelled some smoke, I hope it's not a driver.

I did test with a multi-meter before I turned the power on, I had 120ac out from the wall and 73v dc at the power running out of the transformer. Funny thing is that I bought a 63v dc power supply so it's running hot? I'm not sure.

I have it at the Kitchen table right now doing a teardown and I'm gonna start from the beginning and see if I can find a mistake or something I did wrong. ???

5
General Mach Discussion / Iissues with my cnc router
« on: February 01, 2014, 02:33:06 PM »
Hello,
Can some one give me guidance on what I may be doing wrong.

I had purchased a cnc router and after having it for a few years I wanted to add a 4th axis

I purchased all the components that I needed and I matched exactly what I had existing in the machine.

stepper motor- Sure step STP-MTR 23079
stepper driver- Geckodrive G201

I matched the wiring as I saw it wired on the other motors and drives and I went into Mach 3 and enabled the 4th axis.

This is what I did so far:
Under ports and pins I enabled the A axis using step pin #8 and dir pin #9 step port 1 and dir port 1
Input signals A home enabled Port#1 Pin #14
Toolpath config A rotations enabled
I turned off the A axis inhibits under the settings tab

I tried to use the rotary and it worked but all 3 other axis when they move have a kind of grinding moaning noise.

I looked at the driver and miss read the power requirements and thought maybe there wasn't enough power, the power supply was on the low end but it was in the requirements.

Now I have a power supply on the middle to upper end and I still have the same problem.

Any ideas?

Thanks
Greg

6
General Mach Discussion / CNC router power supply question
« on: December 24, 2013, 07:37:19 AM »
Hello guys and Merry Christmas!

What is the difference between this linear toroidal unregulated power supply,

http://www.automationtechnologiesinc.com/products-page/torroidal-power-supplies/unregulated-350w-48dc7-5a-input-120vac-or-230vac

and this Switching CNC Power Supply?

http://www.automationtechnologiesinc.com/products-page/switching-power-supply/kl-350-48-48v7-3a

I have a linear toroidal unregulated power supply on my CNC router I upgraded the power supply to a higher volts and now I need to upgrade the capacitor.

Whats the difference? Is one better then the other?

Thanks,
 Greg

7
General Mach Discussion / Re: A axis setup problems
« on: October 13, 2013, 12:08:36 PM »
Hello again,
It's been a busy summer but I'm back working on my router again.

I purchased a new power supply; 50V 300VA.

http://www.antekinc.com/details.php?p=696

The problem I'm now having is that I keep blowing fuses on my router.

Where the 110 plugs in there is a little compartment that has a small fuse in it 5A and it keeps blowing.

Any ideas?




8
General Mach Discussion / Re: A axis setup problems
« on: May 10, 2013, 12:08:00 AM »
Thanks for your help guys I really appreciate it.

It was mentioned that it may be my power supply that could be causing the noise on my motors.

What I know so far:
My power supply is 23VDC 300VA
My stepper motor is 2.8 Amps, 3.8mH/phase.
My stepper drive can run between 18VDC and 80VDC.

There is resistors in my router and I'm not sure why they are there.
There are three:
35v 10000uF
63v 330uF
63v 10uF

Any ideas?

Regarding steps per unit how do I find out what my microstepping is?
I read the driver and motor manual I didn't see anything about microstepping.

Thanks again for you help.

9
General Mach Discussion / Re: A axis setup problems
« on: May 08, 2013, 10:01:22 PM »
So if I don't want to use a gear ratio and want to use direct drive it would be 360 deg / 1.8 deg per step = 200?

10
General Mach Discussion / Re: A axis setup problems
« on: May 06, 2013, 10:41:20 PM »
Quote
Link

K2CNC doesn't sell that machine any more so I have a link to their site through a web archive.

http://web.archive.org/web/20060117044013/http://www.k2cnc.com/CNC-router-KT-2514_detail.asp

I changed my Step Pulse to 5 from 0

Quote
Why?

I went digging on this forum for motor noise and I read some one recommend that or it may have been in the tutorial videos.

But the power supply that you mentioned may be correct. I will look into that more.

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