Power supply selection for stepper based config

Hi

Can you help for choose the good power supply, i'm unfortunately really unsure and i like to select the most appropriate option for a correct price.

This is for a little mill Meccanica Cortini L300 retrofit with :
3x nema 34SSM9460-EC1000 121 mm 7.5nm 6A closed loop
3x hsb86h (not delivered) 20-63VAC or 30-90VDC
original screw without ball (like to be replaced but i'im really affraid fro manufacturer selection and or price)

Planned a 4th axis with similar motor
Liked a ATC stepper based


Well i have some difficulty for decision,
it is better to have all separated supply ?
one for all ?
one for XYZ stepper but another for additional stepper ?

I think this is better to use toroidal transformer + diode bridge + capa V/S chinese regulated power supply.

Br

If you go for a SMPS don't go for the cheap Chinese devices.
Go for a name brand one, such as Meanwell (I'm not pushing this particular brand), I use multiple ones in my system, one 48v for steppers and one 12v & 2 5v for field & logic, never had an issue, even in the height of an Aussie summer. With a name brand device you can be assured it has gone thru the approvals for your country. The Chinese ones have been know to rely on the importer to arrange for the approvals....which many ebay sellers don't bother with.

Yeah I know others will disagree, but I've worked around power & electronics long enough not to take shortcuts.

Oh and don't take electrical advice from randoms on the internet. That even includes myself.

Hi
many thanks for both reply

@ tommylight

you are right i have missed these driver accept alternative power one good point for save space inside box !

I have calculated something like 20A is perfect with something like 48v for toroidal so i'm happy for your confirmation.

at comparable price it is better to have 4x5A or 1x20A ?

@ BeagleBrainz

Good to know you are happy with branded SMPS, i don't really know why but i like more the toroidal solution mostly regarding to fiability vs cheap SMPS. (but i will check for branded unit)

Linear maybe a better solution in your case 20A would do for all 4 axis

www.geckodrive.com/support/step-motor-ba...r-supply-basics.html

[quote="tommylight" post=164125 Only one manufacturer had consistently sustained over 60% of rated power without issues, i can look for the brand name, but they do not sell on eBay or aliexpress.
[/quote]

Whats this? A Pork chop ?

www.aliexpress.com/item/32951223637.html...02_,searchweb201603_

350 W granted I know

fr.rs-online.com/web/p/transformateurs-toriques/1234006/
or
www.mouser.fr/ProductDetail/Triad-Magnet...%252BuZJXNhMAvK8c%3D

as i can see SMPS from Meanwell is more expensive with comparable spec.