Plasma Torch, first try and lots of questions
wiring continues and I love the mic connectors for motors only since trembling hands make it easier
![:whistle: :whistle:](/media/kunena/emoticons/whistling.png)
I was reading the 7i76e manual and yes a bit unclear, but thanks to the provided wiring and connection diagrams it is not that foggy anymore.
Never the less I would like to get certainty. The digital output is it 24v or 0.... Or on 5V level?
I bought a 24V relais for torch start then I would need to get a 5v one.
Unfortunately pnp No induction sensors too....
I really appreciate the help provided...
. The port in the document starts with 0..and the wiring diagram with 1....!!
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- tommylight
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Please add a diode in parallel to the relay.
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Wondering about me since I can't somehow find that in the original manual.
![:blush: :blush:](/media/kunena/emoticons/blush.png)
My bad! Ports are right numbered... 0 seems to refer to first input output number definition.The port in the document starts with 0..and the wiring diagram with 1....!!
![:blush: :blush:](/media/kunena/emoticons/blush.png)
Newbie!
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Happy holidays!
My mains power circuits are working... Now it's on to connect the 7i76e which I always push ahead since I fear to break it.
I am using dm556t and on the Mesa the motor has 5v+ and ground as well.
I don't know where to connect these? Or these are not in use... Or for enable?
Do I need limit switches?
I still haven't installed linuxcnc now but is it right I can use pnp NO home switches with 24v as well?
Thanks again!
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Here is a good connection sheet forum.linuxcnc.org/media/kunena/attachme...hluss_2017-01-02.pdfMy mains power circuits are working... Now it's on to connect the 7i76e which I always push ahead since I fear to break it.
I am using dm556t and on the Mesa the motor has 5v+ and ground as well.
I don't know where to connect these? Or these are not in use... Or for enable?
7i76e DM556T
STEP0- PUL-
STEP0+ PUL+
DIR0- DIR-
DIR0+ DIR+
If ENA+ and ENA- are left disconnected then the drive will be enabled.
You do not have to have limit switches, the soft limits in LinuxCNC are very reliable. You can always install them later if you feel that you need them.Do I need limit switches?
Yes, see the connection sheet.I still haven't installed linuxcnc now but is it right I can use pnp NO home switches with 24v as well?
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Ohhh that's a newer version!
Great thank you! !
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Reason: the power supplies.. When connected power of drivers and 7i76e when power supplies were on already NO PROBLEM!
just leaving this hint here when somebody has same problems.
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I smoked my 7i76e today was maybe not a good idea... To turn motors on first then 7i76e....
So there will be no messages from me for the time being.....
In case somebody can repair that thing... The chip close to power in burned off....
Until next
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- thefabricator03
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I smoked my 7i76e today
That has always been my main fear with working with electrical boards.
I have destroyed a few arduinos because I did not have spacers under the boards and I put them down on something metal bridging contacts.
You could get in contact with Mesa and I am sure they will be able to repair. But in the scheme of things anything Mesa sells is not expensive really. Boards for my Yaskawa Motoman robots cost in the $1000's for a replacement.
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We have also had a high failure rate of our last lot of cards
so we will repair/replace the card under warranty, but make sure you
do not switch the DC field power (switch the AC side of the supply)
We expect to have a more rugged ( more tolerant of transients from switching DC side)
7I76e version out in 1-2 months
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