[VSNT]

im maxing out at 9-10ipm (jogging) and would like to get a heck of a lot more its just way to slow for a 3'x5' machine. Any sugestions im looking into belt drives and pully but cant seem to find anything worth buying???? PLEEEZZZ all sugestions apreciated

[Mickster]

Hi VSNT,

a belt/pulley setup may not be the answer to your problem...

For a more accurate answer before you start throwing money at your machine, listing your current setup would help greatly.

PSU voltage & amperage?
Motor config (Uni-polar, Bi-polar, series/parallel) ?
Motor voltage ?
Motor torque (Oz/In or Nm) ?
Driver config (Amperage settings, Full/Half/Micro-stepping...) ?
Leadscrew type & pitch (ACME, allthread US/Metric etc) ?
Software setup (Mach, TurboCNC etc. motor tuning settings) ?

All of these factors need to be taken into consideration to get the most out of your machine. Maybe your current settings are not optimized at the moment and this is what is producing low speeds.

I am by no means the right person to offer you advice, as I'm still wearing my L-Plates, but the above info is necessary for those experienced members on the forum, in order for you to tune your machine to it's fullest capacity.


HTH,
Mick

[VSNT]

I just tested the motor speed and im maxing out at about 120+- rpm, im using keling 4030 drivers, with there KL23H286-20-8B, 425 oz-in steppers, something wrong ??????

[ger21]

How do you have them wired (bipolar or series?) What voltage are you running them at? For best performance, those motors should be run Bipolar parallel at 70-80V. You'd need better drives for that though.

[VSNT]

ok uped to 55v @ 3A and now im getting a max of about 15ipm before i realy start losing steps?????

[ger21]

What type of screws are you using?

[VSNT]

was using Kerk Motion 8000's @ 42% and now im using acme 1/2-10's

[fireballcnc]

What software?

Full?...Half?...Microstepping?

John

[VSNT]

Mach3/Quantum
1/8

[fireballcnc]

So your "steps per" in Quantum motor tuning is 16000?

Did you try half or 1/4 stepping? You'd go faster..

My screw is 1/2-10 acme...I use Geckos at 1/10 step.
Just for comparison, My Velocity is 125 and accel is 30. I can go
90 IPM easy.

John

[fireballcnc]

Just noticed you said you're using the Keling 4030 drivers and
you'd upped the voltage to 55??

It says they're for 24-40VDC.

Maybe I'm missing something?

John

[VSNT]

started at 24 and they barely moved so slowly but surely the voltage has crept up to 55, looking at the drivers they should be able to handle 80 reliably but the motors would cook.

[ger21]

You didn't say how you had them wired? They should be wired bipolar parallel, and they shouldn't have a problem handling 80V. If you have them wired bipolar series, that would explain your low speeds. Just my guess, but I think it may be a poor choice of motors. Ideally you want motors rated 2-3V for high speed applications.

[VSNT]

ya no wiring diagrams so i wired it bipolar series using a meter to find the coil pairs, ill try parallel right now and see if it helps. TNX anyone have a proper wiring diagram? my leads are red, green, blue, black, brown, white, orange, yellow which dont match any of the drawings from keling???

[ger21]

Make sure you double the current when you switch to parallel.

[VSNT]

55v is the max i have available, ANY ONE GOT A PS FOR SALE??? im getting 40ipm reliably now though, which is still slow but much better than 10. still not sure if my wiring is correct diagram anyone anyone???

[ger21]

Double the current, not the voltage. Current should be set to 2.8amps when wired parallel.

[VSNT]

ya there running at 55v with 3amps (6-9amps shared total), 2 ps's working together and im actualy getting 35ipm was loosing steps at 40????

p.s. anybody know what switches 4 and 8 are for?? or are they just dead???