About to order the 570 oz steppers, now just debating on the power supply I need.
Suggestions?
Here is what I have on my X2:
70V 800W 5V 12V Power Supply CNC Mill Servo Step Motor | eBay
Digital Industries, Motion Control, Machine Tool Systems
About to order the 570 oz steppers, now just debating on the power supply I need.
Suggestions?
Here is what I have on my X2:
70V 800W 5V 12V Power Supply CNC Mill Servo Step Motor | eBay
Hey man, great build.
Love how you went with the Tormach spindle because I have been contemplating doing the same if I go the "build my own machine" route. The options for the ATC are already pretty open with that spindle. Very interesting build.
BTW, I'm in Jersey...whats your location?
-Jason
I don't know what drivers you are using, but I would go off the guidelines for Geckos. I pulled this from Yahoo! Groups Mariss is the lead engineer at Gecko IIRC.
I think something got mangled in the reply. The 4 to 20 supply voltage
rule applies in either case (round or square). The power supply current
rule is 2/3 of the motor's rated current for round motors, equal to the
motor's rated current for square motors.
Mariss
--- In geckodrive@***********.com, "jerryflyguy"wrote:
>
> Mariss I've been talking to Mr Campbell from Campbelldesigns.com, and
> figuring out my power supply requirments. He mentioned that your 4 to
> 25 times the rated stepper voltage formula, actually only applied to
> the old round motor's. He also mentioned you were planning to come
out
> with a new number/formula for the new, more effecient sqr motor's.
I'm
> just wondering if you could pass on what that number should be? I'm
> looking at running Nema 34's w/ 2.3 v and 6.3A per phase. [four in
> total] also I remember reading someplace that a person should total
> their needed current and then build the power supply to meet 65% of
> that number.. is this correct or is my memory giving me fits??
>
> Thanks!
> Jarrett Johnson
The correct supply voltage for any stepper is 32 times the square root of the winding inductance, in milliHenrys. Any lower, and you'll lose torque at higher speeds, as the coils will never saturate. Any more, and you'll just get the motors hotter. Supply current should be no less than 2/3 the motors rated current in the chosen connection mode.
Regards,
Ray L.
I live in morris county.
I planned to use geko drivers as well. Same as I used for my X2 build. They work nicely.
2.5mH.
I calculate 50V?
According to my rough calculations. Sound about right?
I guess thats why my X2 motors get really hot. Only when I use the coolant and it splashes on the motor to cool it down.
I do like the style i linked because it has both a 12V and a 5V power supplies for the break out board.
56V 11A 5V 12V Robotic Motion Control Power Supply Fuse | eBay
Guess this is the closest to 50V with the additional 5V & 12V sections
56V 11A 5V 12V Robotic Motion Control Power Supply Fuse | eBay
Guess this is the closest to 50V with the additional 5V & 12V sections
Merry Christmas everyone!!
Took the day off, so I will try and get some work done bolting the bottom plate to the I-beams.
I beams bolted. daily progress is nice.
On a side note...
Having some problems with one of my X2 steppers. It sounds like its spinning, and the shaft doesn't move. Seems like the slightest bit of resistance won't allow it to operate. If i slightly tighten the gibs, it just makes the spinning noise, but doesn't move. if I help the table along there is no problem. They are about 3 years old with some heavy use out of them. Does it sound like time for a new motor?
Sure the coupling hasn't worked loose from the motor shaft?
Build is coming along nicely!!
Chris
nope, I can see the coupler not moving either. Plus I can see the 1/4" rear shaft not moving either. Just makes the spinning noise, and when I help it along it moves.
I have had it with dovetails. Once I finish this build, i will re-re-rebuild my X2 and convert it to linear rails as well.
Try turning the acceleration WAY down.
I will try anything at this point. i switched to another used motor as well, same problem.