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I built a second plasma controller utilising what I learnt making the spaceship plasma a few years ago.
 
This still uses a Mesa 7i76e and a couple of Thcads for torch voltage and Ohmic sensing
Additionally it has a 433 Mhz Wireless pendant which has a wired in receiver. This is the second one of these I have used and I like them a lot
Steve in Melbourne saw some of my videos and asked me if I could help out with his plasma table which was  a bit tired and in need of a refresh.

 
So a deal was struck.
The table was using a 24 volt power supply to drive the motors which was well underpowered. My controller includes a 60 volt AC toroid I had custom made which powered 5 x Lam Technologies D1076 6 amp drivers.
We replaced the motors with industrial quality ones befitting the Lam drivers from Moon's Industries. I wanted to use NEMA34's but we could not fit them in. We also added 5:1 reduction planetary WUMA gearboxes. These needed some customisation to the output shaft. We had to use an 8mm shaft. The 14mm standard shaft just would not fit into the exisring pinion.

 

to continue

G0G53Z148 wrote:

Braucht die 7i76E bei der Netzwerk Einstellung ein Gateway?

Nein.

hallo servus und grias di!

Schöne grüße aus der AIRPOWER 2024 Region, es geht laut her und es gibt neu Entwicklungen.

Nachdem der MiniPc den Elektronischen Himmel Erreicht hat Musste ein neuer her,

MINIS Forum, Läuft und ich habe noch eine Neue Originalverpackte 7i76E bekommen.
Da ich nur die dinge im Hintergrund erledige und alles einstelle und besorge, ist hier meine frage

Braucht die 7i76E bei der Netzwerk Einstellung ein Gateway?

Ich habe dem PC nun 192.168.1.20 > 255.255.255.0 und als Gateway die Karten IP die Standard ja 192.168.1.121 sein soll

nicht dass ich dem Kollegen der in der Zwischenzeit die Mesa 50 km weit weg anschließt und mit Computern so gar nichts am Hut hat einen Rechner gebe der dann nicht verbindet

danke dir im voraus und schöne grüße aus der Steiermark

I found someone to help me with that (YouTube channel talla83), thanks a lot!

Yes, 7i76e.

Awesome, generous offer, thanks! From what I hear Mesa boards are very robust so I don't anticipate that anything will fail with that system. But, it is a mission critical machine for their production.

HH

I assume you're talking about a 7i76e board and it's being replaced with a 7i76eu. Last I checked on 6/27 the 7i76eu was 2 months out so maybe it's getting close. If something happens to your 7i76e before the 7i76eu is available I do have one in reserve in case someone breaks down.

JT

If you have one working card you could choose the slowest/cheapest shipping option for
the other card Also both issues (damaged step/dir output or damaged spindle output)
are relatively easy  to repair if you have a nearby person with SMT repair ability
(the affected parts are known and inexpensive)
 

Good to know - I am in the EU though, not sure that is feasible here.

For simple isolated issues (like a step/dir channel failure or spindle issue)
It is possible to repair the card

Ok thanks. Looks like the new one is also defective then

Probably your scope setup
 Minimum step length on the 7I76E is one ClockLow cycle or 10 ns

The 4030 drive does require quite high drive current
so you may need to wire it single ended:

7I76E +5 to Drive STEP+, DIR+
7I76E STEP- to Drive STEP-
7I76E DIR- to Drive DIR-
 

No, the only differences between 7I76E versions is that the overvoltage
protection is better on the C rev cards and the field power regulator uses
a different chip. The spindle interface is identical.

When setting step 5000 5000 dir 10000 1000 the controller does not read the signal at all, the oscilloscope also the minimum signal it reads is dir 6000 6000.

After searching for more than a year or two I finally got hold of a replacement 7176E, as on my old one one of the servo channels stopped working.

On the 7i76E I received I see that it is HW Rev B (my old one was Rev C).
After inserting the new card I noticed that the spindle control doesn't work.

Is there a difference between these two revisions that could explain why it doesn't work?

I would probably set the step space and step length to 5000,5000
and dir setup and dir hold to 10000,10000 on that drive.

That is, double the minimum drive timings.