What drive and system voltage are you using here?
Toroids don't make any sense anymore. Switching power supplies DO
perform great, unless you overload 'em with BEMF, but a toroid is
vulnerable to that too. Specifically Meanwell switching supplies
perform reliably.
Resonance seems to be
On Tuesday 24 January 2017 01:11:40 Danny Miller wrote:
> Dude, drop the 2-phase bipolar stuff and move to 3 phase! Or at least
> DSP drives.
>
> http://www.ebay.com/itm/Nema-23-3phase-1-8N-m-255ozf-in-stepper-Motor-
>57mm-frame-8mm-shaft-57J1285-658-/262562493149?hash=item3d21f1b2dd:g:fM
On 23.01.17 10:34, andy pugh wrote:
> On 23 January 2017 at 08:34, Erik Christiansen
> wrote:
> > but how
> > would you grind the inside of jaws clamped on something?
>
> For a chuck with 2part jaws, this way works:
> https://www.youtube.com/watch?v=nALN0qGZbgY
>
> For
Dude, drop the 2-phase bipolar stuff and move to 3 phase! Or at least
DSP drives.
http://www.ebay.com/itm/Nema-23-3phase-1-8N-m-255ozf-in-stepper-Motor-57mm-frame-8mm-shaft-57J1285-658-/262562493149?hash=item3d21f1b2dd:g:fMsAAOSwCfdXor7F
Greetings all;
I see some "Nema 24" motors at quite reasonable prices showing up on
fleabay, in fairly high torque ratings, so I bought one 10 days back,
since I need a stronger one, with perhaps a damper on it on my x axis. I
bought the 8 wire model so I can drive it in parallel where I ought
On 23 January 2017 at 08:34, Erik Christiansen wrote:
> but how
> would you grind the inside of jaws clamped on something?
For a chuck with 2part jaws, this way works:
https://www.youtube.com/watch?v=nALN0qGZbgY
For a solid-jaw chuck there are some pretty clear pictures
On Monday 23 January 2017 03:34:23 Erik Christiansen wrote:
> On 22.01.17 11:08, Gene Heskett wrote:
> > The faceplate hub looks and measures pretty close to cylindrical,
> > but it is a rough surfaced forgeing or cast steel surface I am
> > looking at, and I'd druther it was trued, which means
Field power is required for the serial communications to work .
So that should solve your problem
On Mon, 23 Jan 2017 at 08:51, Viesturs Lācis
wrote:
> 2017-01-22 16:54 GMT+02:00 Peter C. Wallace :
>
> >
>
> >
>
> > Do you have field voltage supplied
2017-01-22 16:54 GMT+02:00 Peter C. Wallace :
>
>
> Do you have field voltage supplied to the 7I70 and 7I71?
>
Not yet, I have it all laid out on a table, just testing to get the
initial config right to get the boards working. So field power is
needed? Ok, thanks, I will try
On 22.01.17 11:08, Gene Heskett wrote:
> The faceplate hub looks and measures pretty close to cylindrical, but
> it is a rough surfaced forgeing or cast steel surface I am looking at,
> and I'd druther it was trued, which means I'd have to separate it from
> the chuck and turn it around on the
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