Z axis

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13 May 2020 01:15 #167590 by phillc54
Replied by phillc54 on topic Z axis
Just try plugging in the correct numbers then change the scale and see if you can get the display down to 0v.

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13 May 2020 01:55 #167594 by Plasmaguy
Replied by Plasmaguy on topic Z axis

You should read 0v at rest.


What issue might cause it to read other than 0?

At rest mine fluctuates 148-150v...while cutting it's 278ish ...11ga @ 100ipm, .06 cut height.

45XP book voltage calls for 128v so the THCAD10 is right there.



I ran the calibration calc with values ,

50:1 voltage divider setting

F/32 jumper on THCAD10

935.8 & 121

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13 May 2020 02:02 #167596 by phillc54
Replied by phillc54 on topic Z axis
What happens if you negate the offset? -3781.25

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13 May 2020 02:18 #167599 by Plasmaguy
Replied by Plasmaguy on topic Z axis
Okay thanks.. that sent it to 0 / -0.

PlasmaC is very impressive! I'm loving all of the options and layout. This will make my days much better.

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13 May 2020 02:22 #167600 by phillc54
Replied by phillc54 on topic Z axis
Thanks, I hope you enjoy it.

You most probably have:
setp hm2_7i76e.0.encoder.00.scale 1
in your halfile, it should be:
setp hm2_7i76e.0.encoder.00.scale -1
it is the ONLY -1 in there, but if you are happy to have your offset at -3781.25 then you can leave it as it is.
The following user(s) said Thank You: Plasmaguy

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14 May 2020 00:30 #167686 by motal2004
Replied by motal2004 on topic Z axis

phillc54 wrote: Just try plugging in the correct numbers then change the scale and see if you can get the display down to 0v.


When I do this I run number all the way down to 0 so the voltage reads 0 and I’m back to nothing square 1.

I’m at a lost with the Mesa thcad—10 board

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14 May 2020 00:44 - 14 May 2020 00:46 #167687 by phillc54
Replied by phillc54 on topic Z axis
Strange, Your numbers are correct and the hal files look good, the only thing I can think of is the divider is not really 50:1

A -73V variation from what it should be is a lot.

Have you checked that the THCAD jumper is definitely F/32?

EDIT: definitely a THCAD-10?
Last edit: 14 May 2020 00:46 by phillc54.

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14 May 2020 00:58 #167689 by motal2004
Replied by motal2004 on topic Z axis
Here a couple pictures, to make sure
Attachments:

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14 May 2020 01:04 #167690 by motal2004
Replied by motal2004 on topic Z axis
My plasma machine has 3 out put for voltage.
1/50, 1/16 and raw arc voltage with 100kohm resistors in series.
Attachments:

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14 May 2020 01:12 #167691 by motal2004
Replied by motal2004 on topic Z axis
And I just triple check my wiring and I Am connected to the right pin 4 and 6 for the 1/50

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