Good news. I found a complete, original control for this exact robot on
ebay for ~$250!
A little wiring and now I am down to debugging coms instead of building a
control from scratch.
If this project works as i hope, the help everyone shared will be handy
when I replicate this setup in a lower co
2012/9/26 andy pugh :
>
> Alternatively, djdelorie on the IRC seems to be quite well through
> designing his own brushless motor drive.
Dennis (ceenbot@...) is working on IRAMS-based servo drive. He has
been silent for few weeks now, so I do not know the current situation.
Last I saw was a test vi
On 25 September 2012 20:03, Jason Burton wrote:
> Don't really want to put $300+ into an experimentation platform that ends
> up slower than what i could build from my "junk" box.
One option would be to make your own drive.
LinuxCNC + a Mesa card can generate the 6 PWM signals needed for a
3-pha
Jason Burton wrote:
>
> Hall effect sensors >> assuming straight contact closures here, not active
> signals, right?
>
Well, the typical real Hall sensor in the motor needs +5 V, but is often
like
a contact closure to ground. So, the Hall sensor package has 5 wires,
+5, Ground and 3 signal wir
On Sep 22, 2012 10:39 PM, "Jon Elson" wrote:
>
> Viesturs La-cis wrote:
> > 2012/9/22 Jason Burton :
> >
> >> Does Mesa or Pico (or another vendor) make a small, inexpensive amp for
> >> this size 3 phase servo?
> >>
> >>
> >
> > Mesa has small BLDC servo amps, but their rated voltage is much lowe
cogoman wrote:
>
>Remembering an article in Machine Design about the CUI AMT303
> commutating encoder made it seem like a good choice for adding U/V/W
> signals to a BLDC motor that doesn't have hall sensors until I saw the
> price. Digi-key has them for nearly $100. A bit too high, but th
On 09/23/2012 03:57 PM, andy pugh wrote:
> Indeed, using the actual Hall sensors is much better, I was just
> saying that if the motor does not provide the signals then it is not
> necessarily a complete show-stopper.
Remembering an article in Machine Design about the CUI AMT303
commutating enc
On 23 September 2012 18:47, Jon Elson wrote:
> Yes, but that ties up 3 digital outputs per axis. If the motor already
> provides these
> signals, there's no need to do it in software.
Indeed, using the actual Hall sensors is much better, I was just
saying that if the motor does not provide the
andy pugh wrote:
> On 23 September 2012 04:33, Jon Elson wrote:
>
>
>> Our PWM servo amp has been tested to 122 V, and is good to 20 A.
>> It can be used with either Mesa or Pico Systems controller boards.
>> It needs the "Hall" signals from the motor for commutation.
>>
>
> These can be c
On 23 September 2012 04:33, Jon Elson wrote:
> Our PWM servo amp has been tested to 122 V, and is good to 20 A.
> It can be used with either Mesa or Pico Systems controller boards.
> It needs the "Hall" signals from the motor for commutation.
These can be created in HAL under some circumstances.
Viesturs La-cis wrote:
> 2012/9/22 Jason Burton :
>
>> Does Mesa or Pico (or another vendor) make a small, inexpensive amp for
>> this size 3 phase servo?
>>
>>
>
> Mesa has small BLDC servo amps, but their rated voltage is much lower
> - 7i39HV is 50 VDC.
> I do not know about Pico Systems
On Sep 22, 2012 4:49 AM, "Viesturs Lācis" wrote:
>
> 2012/9/22 Jason Burton :
> >
> > Does Mesa or Pico (or another vendor) make a small, inexpensive amp for
> > this size 3 phase servo?
> >
>
> Mesa has small BLDC servo amps, but their rated voltage is much lower
> - 7i39HV is 50 VDC.
> I do not
2012/9/22 Jason Burton
> Sanyo Denki: 100 watt, 3 phase, 200 VAC , 3000 rpm max
I have doubts that the motors actually need 200V. Usually for small motors
it's 40-60V. Check the manuals, 7i39 might fit.
Andrew
--
How f
2012/9/22 Eric Keller :
> 50V just means the top speed is slower. It's still an option
> Eric
Yes, some 5-6 times lower.
--
Viesturs
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
--
How fast i
50V just means the top speed is slower. It's still an option
Eric
On Sat, Sep 22, 2012 at 5:43 AM, Viesturs Lācis wrote:
> 2012/9/22 Jason Burton :
> >
> > Does Mesa or Pico (or another vendor) make a small, inexpensive amp for
> > this size 3 phase servo?
> >
>
> Mesa has small BLDC servo amps,
2012/9/22 Jason Burton :
>
> Does Mesa or Pico (or another vendor) make a small, inexpensive amp for
> this size 3 phase servo?
>
Mesa has small BLDC servo amps, but their rated voltage is much lower
- 7i39HV is 50 VDC.
I do not know about Pico Systems products.
Dennis, how far is the IRAMS-base
I have a Yamaha XY robot minus its controller. X servo (largest of the two)
is Sanyo Denki: 100 watt, 3 phase, 200 VAC , 3000 rpm max with encoder
attached.
Looking to put it into service as a base for several rapid prototyping
projects. Also would like to use it to get my feet wet before tackling
17 matches
Mail list logo
