THC Plasma

Unser Plasmaschneider Hevy-Metal hat diese Jahr gute Dienste und schöne Ergebnisse geliefert....
Des halb haben wir uns entschlossen das THC nach zurüsten....
Erste Frage da wir damals die falsche Firmware genommen ( 7I96S_7I74 )haben gibt es ein Chaos wenn wir auf 7I96S-dpl gehen ?
Frage zum THCAD2 High isolation A-D:
10 V Full Scale
Wiederstände sind ok
Da der Plasmaschneider etwa 103 V beim Schneiden abgiebt was sich mit den Typenschild decktist die frage kann ich auf 150 V gehen für die Wiederstands berechnung oder sollte man auf 200 V gehen ?
Output Frequency ??Mode F/32 oder weiche für die 7I96S ?
Die Eingänge auf der 7I96S Endcoder-Stecker immer die beiden unteren wie in Beitrag 
MESA THCAD-2 - couple quick questions ?

Das war es fürs erste.

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Our Heavy-Metal plasma cutter has served us well this year and delivered great results.... Therefore, we've decided to upgrade to the THC....
First question: Since we used the wrong firmware (7I96S_7I74) back then, will there be any problems if we switch to 7I96S-dpl?
Question regarding the THCAD2 High Isolation A-D
10V Full Scale
Resistors are OK Since the plasma cutter outputs about 103V during cutting, which matches the nameplate, the question is: Can I use 150V for the resistor calculation, or should I use 200V?
Output Frequency? Mode F/32 in the THCad 2 for the 7I96S?
The inputs on the 7I96S encoder connector are always the two lower ones, as in the post "MESA THCAD-2 - couple quick questions" ?
That's all for now.

king regard e Juergen

1. there is no issue changing the firmware (unless you needed the 7I74)

2. 150V full scale should be OK though it may give less margin for sensing ARC OK if you don't have an
ARC OK signal from the plasma source. You can use any divider but /32 is suggested for best noise immunity
If you use /1 you must reduce the encoder filer time constant (so not suggested)

3. Yes, for 7i96s_7i74 or 7i96s_d or 7i96s_dpl firmware, the "A0" encoder input
is always on TB2 pins 7,8 (you can check by looking at the .pin files in the firmware directory)

Hallo PCW my thankˋs
Ok. Then I'll check on the weekend

King regarde
Juergen

There is not much point upgrading from THCAD5 or THCAD10 to THCAD to THCAD2 as it is functionally identical except you can select 0-5v or 0-10 volt scales.

I personally think 150v is a bit low given cutting volts can be up around 130-140 volts. I would set to 180 to 200 volts.

Hallo rodw
I hadn't installed THC until now . And have found that it is better if you use metallsheet with about 2 mm
With a cutting height 1.8 mm 22 amp nozzle 0.9 I measured 103 volts
And nice cutting results .
Now that the intermediate sizes of the resistors are very bad to get, I go to 200 V

King regarde
Juergen