On 12/27/23 12:16, jeremy youngs wrote:
Good afternoon gene, curious if you have a link to a supplier of the 3
phase steppers and drives you are so fond of recently. Tia
Other makers are slowly climbing onto that bandwagon. The quickest way
is net search for 3 phase stepper/servo's if the slash gets past the
search parsing.
Perhaps this one? They also have controllers for this motor that are
rated to 90 volts or more if you want instant performance under heavy loads
<https://www.amazon.com/CNCTOPBAOS-60x60x88mm-Closed-Loop-Controller-Engrvaving/dp/B079CCPCPQ/ref=asc_df_B079CCPCPQ/?tag=hyprod-20&linkCode=df0&hvadid=242027088707&hvpos=&hvnetw=g&hvrand=13409376676669469256&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9009436&hvtargid=pla-416724678613&psc=1&mcid=42e79c9836743c85821765903e2e1f6d&gclid=EAIaIQobChMI06-6_aGwgwMVL8fICh27swCUEAQYBCABEgIxC_D_BwE>
This one is two phase but its almost a drop-in for any normal stepper
motor. The encoder feedback does not go back to linuxcnc, only to the
controller, which tons smarter the the 2m542's we been using.
All of the 3 phase versions I have in service ATM are running on the
LCDA357H controller which is a 50 volt that I'm running on a healthy 42
volt supply. This makes a motor that turns 1.2 degrees per full step,
not the usual 1.8 degrees.
The 2 phase stuff now has the closed loop tech I've got in a box ready
to go on my G0704, all have the Hanpose CL57 controller rated for 90
volts, with the nema 34, 8.5NM for the z axis is dual powered, can take
80 volts AC or 120 volts dc, and I have a 90volt, 1500 watt psu for it
and a 72 volt 1500 watt to run the smaller nema 23's for XY. I'll do
these swaps one motor at a time, because they also by pass the need for
PID's in your config, the PID is in the controller itself. They simply
do what the TP tells them to do.
That high voltage nearly doubles their top speeds. Don't get in front of
these, they will hurt you!
There are other makers versions of the CL57 controller (they all
apparently run on the same TI brain) but their output devices are
limited to 50 volts. There are some with the controller glued to the
motor, a little cheaper yet cuz they need less wiring, but be aware,
some of those motors have hall rotation sensors and they will move in
jerks waiting on the conversion of the hall signal to emulate the
optical stuff on the good ones. Optical has no lag, every edge of either
a or b going by tells the electronics where it is at and which direction
its moving. The rear covers on the motors can tell you which, the
opticals are at least 20mm thick, the halls are more compact.
HTH, and have a Happy, Better, New Year Jeremy.
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Cheers, Gene Heskett.
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