[mcardoso]

G0704 with Allen Bradley AC servo motors. 5000rpm on a 5tpi ballscrew gives 1000ipm without a complaint. Z axis get a little low frequency vibration due to the unsupported screw but it is not bad at all. I usually keep the rapids at 100ipm when proofing a part and 600ipm otherwise.

[Yastron]

I'm getting:
65ipm on Y (2 motors)
94ipm on X
~90ipm on Z

I am very new to owning a CNC router and want to improve my machine, could use some advice please.

I want to go faster in the X and Y for cutting foam, can it be as simple as increasing my power supply voltage? I know there are many ways to increase the speed, but upgrading my power supply would be the simplest, biggest bang for my buck right now. However I've been told that since my motors are wired in parallel that doubling my power supply voltage would not help me gain any significant speed, can somebody explain this to me please? I cannot find anything in the forums/internet to confirm this.

Router specs:

4x 556oz Nema23 Stepper Motors, Bipolar parallel, 5.0A rated current, 0.6ohm, 3V, 2.5mH
24V power supply, 12A
4x M542 Leadshine Drivers, 20-50VDC, 4.2A output max (so i'm not fully utilizing the 5A motor? or the possible 48V input?)
AKZ250 USB Controller
1605 C7 ballscrews

If I swapped my power supply from 24 to 48, would I be able to expect a 10%, 50%, or 90% increase in speed?

Thanks in advance.

[Bob La Londe]

I'm getting:
65ipm on Y (2 motors)
94ipm on X
~90ipm on Z

I am very new to owning a CNC router and want to improve my machine, could use some advice please.

I want to go faster in the X and Y for cutting foam, can it be as simple as increasing my power supply voltage? I know there are many ways to increase the speed, but upgrading my power supply would be the simplest, biggest bang for my buck right now. However I've been told that since my motors are wired in parallel that doubling my power supply voltage would not help me gain any significant speed, can somebody explain this to me please? I cannot find anything in the forums/internet to confirm this.

Router specs:

4x 556oz Nema23 Stepper Motors, Bipolar parallel, 5.0A rated current, 0.6ohm, 3V, 2.5mH
24V power supply, 12A
4x M542 Leadshine Drivers, 20-50VDC, 4.2A output max (so i'm not fully utilizing the 5A motor? or the possible 48V input?)
AKZ250 USB Controller
1605 C7 ballscrews

If I swapped my power supply from 24 to 48, would I be able to expect a 10%, 50%, or 90% increase in speed?

Thanks in advance.

Its a good idea to always have some safety margin in both voltage and current. Many drivers can handle their rated power for a short time, but continuously may damage them.

[Yastron]

Hi Yastron - going to 48V will be a big help in gaining speed. Peter

Its a good idea to always have some safety margin in both voltage and current. Many drivers can handle their rated power for a short time, but continuously may damage them.

Thank you for the replies Pete and Bob,

I went ahead and purchased this 48V regulated SPS:

https://www.amazon.ca/gp/product/B00...?ie=UTF8&psc=1
MEAN WELL SE-600-48 AC to DC Power Supply, Single Output, 48V, 12.5 Amp, 600W, 1.5"

and will try running it at ~42 or ~44V to give some safety margin from the 50VDC limit of my stepper drivers.

I may also look at changing my 1605 ballscrews for 1610 ballscrews if I still want more speed after the power supply upgrade.
I regularly do diamond-drag engraving on aluminum (at 20ipm), and am curious how much the coarser pitch would affect my engraved text quality. Any thoughts on this?

I will post my speed increase results after I hook up my new power supply and do some testing.