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Taking a different approach to independent EN and EP amperag

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Re: Taking a different approach to independent EN and EP amp

Postby zank » Sat Nov 22, 2014 8:16 am

Esenti, on your machine, you might want to try setting the offset at +20% as a starting point.

On the HTP 221, I'd probably try setting the EN at 70-80% as a starting point.
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Re: Taking a different approach to independent EN and EP amp

Postby zank » Sat Nov 22, 2014 8:35 am

My pleasure guys. Please post your findings as well. These inverters are pretty amazing. We all need to learn from each other. Sometimes a solution to a problem requires going off the beaten path.
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Re: Taking a different approach to independent EN and EP amp

Postby Bill Beauregard » Sat Nov 22, 2014 10:05 am

Zank;

You're killing me here! I want detail! What did the upgrade cost? Where did you buy it? How do I install it? Months ago when Terry (Shovelon) talked about the 350 with amplitude I started having buyer's remorse. I take it it is now available.
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Re: Taking a different approach to independent EN and EP amp

Postby zank » Sat Nov 22, 2014 11:03 am

Bill, it's part number 301235. Retail is $499. Maine Oxy ordered it for me locally. It was brand new when I got it, so I couldn't find it online. The card goes in the SD slot and stays in.super easy. The other cool feature that I haven't really dug into yet is you can change the waveshape for each half. So, for example, you could have tri wave on EN and advanced square on EP.
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Re: Taking a different approach to independent EN and EP amp

Postby Oscar » Sat Nov 22, 2014 3:58 pm

zank wrote:Bill, it's part number 301235. Retail is $499. Maine Oxy ordered it for me locally. It was brand new when I got it, so I couldn't find it online. The card goes in the SD slot and stays in.super easy. The other cool feature that I haven't really dug into yet is you can change the waveshape for each half. So, for example, you could have tri wave on EN and advanced square on EP.


If the big jolt of amps on the EP side is what is truly doing the oxide-breaking more so than the time-based balance shift, which based from your findings it indeed is, I'd suspect that using a triangular wave on the EP side to keep the amperage peak high, while lowering the overall heat back into the tungsten more so than an advanced square wave will help out just as much as using more EP:EN ratio and keeping the EN% balance up higher near 100% as much as possible. Think "area under the curve".

Amazing what lines of code will do in the real world. Just a bunch of 0's and 1's on a chip. Yet the results in reality are magnificent.
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Re: Taking a different approach to independent EN and EP amp

Postby MinnesotaDave » Sat Nov 22, 2014 7:31 pm

Oscar wrote:
zank wrote:Bill, it's part number 301235. Retail is $499. Maine Oxy ordered it for me locally. It was brand new when I got it, so I couldn't find it online. The card goes in the SD slot and stays in.super easy. The other cool feature that I haven't really dug into yet is you can change the waveshape for each half. So, for example, you could have tri wave on EN and advanced square on EP.


If the big jolt of amps on the EP side is what is truly doing the oxide-breaking more so than the time-based balance shift, which based from your findings it indeed is, I'd suspect that using a triangular wave on the EP side to keep the amperage peak high, while lowering the overall heat back into the tungsten more so than an advanced square wave will help out just as much as using more EP:EN ratio and keeping the EN% balance up higher near 100% as much as possible. Think "area under the curve".

Amazing what lines of code will do in the real world. Just a bunch of 0's and 1's on a chip. Yet the results in reality are magnificent.


The wave form is also adjustable for each half??

While that is actually super cool.....Holy mother of crap! Imagine the Noob questions that are coming in another couple years.

When we tell them to list their settings before we can help, the list will be 50 items long! :o

Then after reading all that, and them trying 200 different combinations....
.....the problem will be they were running 75/25 gas the whole time and didn't check when told..... :lol:

I better go wax my Airco and give it a hug :D
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Re: Taking a different approach to independent EN and EP amp

Postby Bill Beauregard » Sat Nov 22, 2014 7:55 pm

MinnesotaDave wrote:
Oscar wrote:
zank wrote:Bill, it's part number 301235. Retail is $499. Maine Oxy ordered it for me locally. It was brand new when I got it, so I couldn't find it online. The card goes in the SD slot and stays in.super easy. The other cool feature that I haven't really dug into yet is you can change the waveshape for each half. So, for example, you could have tri wave on EN and advanced square on EP.


If the big jolt of amps on the EP side is what is truly doing the oxide-breaking more so than the time-based balance shift, which based from your findings it indeed is, I'd suspect that using a triangular wave on the EP side to keep the amperage peak high, while lowering the overall heat back into the tungsten more so than an advanced square wave will help out just as much as using more EP:EN ratio and keeping the EN% balance up higher near 100% as much as possible. Think "area under the curve".

Amazing what lines of code will do in the real world. Just a bunch of 0's and 1's on a chip. Yet the results in reality are magnificent.


The wave form is also adjustable for each half??

While that is actually super cool.....Holy mother of crap! Imagine the Noob questions that are coming in another couple years.

You'll need a lot of wax, and big arms. The Airco like a big woman gives a lot to love, and throws a lot of heat on a cold winter night.
When we tell them to list their settings before we can help, the list will be 50 items long! :o

Then after reading all that, and them trying 200 different combinations....
.....the problem will be they were running 75/25 gas the whole time and didn't check when told..... :lol:

I better go wax my Airco and give it a hug :D
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Re: Taking a different approach to independent EN and EP amp

Postby Oscar » Sat Nov 22, 2014 8:04 pm

MinnesotaDave wrote:The wave form is also adjustable for each half??

While that is actually super cool.....Holy mother of crap! Imagine the Noob questions that are coming in another couple years.

When we tell them to list their settings before we can help, the list will be 50 items long! :o

Then after reading all that, and them trying 200 different combinations....
.....the problem will be they were running 75/25 gas the whole time and didn't check when told..... :lol:

I better go wax my Airco and give it a hug :D


Yup, each half of the waveform shape can be set independently. Good thing noobs can't afford the software upgrade, let alone the machine. :D

If I ever buy another TIG, it will either be a 280DX, or a 350DX. Or a Stel (HTP) if they ever decide to give either one of those Miller's a run for their money. It would likely be $1500 cheaper. I can only dream :)
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Re: Taking a different approach to independent EN and EP amp

Postby Drifta-X » Sat Nov 22, 2014 8:56 pm

Wow, very cool indeed!!!
Don't want to buy the everlast 210ext quite as much now lol.
But think still be awesome first welder.
I have a soldering iron!
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Re: Taking a different approach to independent EN and EP amp

Postby MinnesotaDave » Sat Nov 22, 2014 9:18 pm

Bill Beauregard wrote:You'll need a lot of wax, and big arms. The Airco like a big woman gives a lot to love, and throws a lot of heat on a cold winter night.


Yep - I know a little about that "gives off a lot of heat" part :D
Dave J.

Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

Airco 300 - Syncro 350
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