Choosing a PSU fos steppers
Hi!
I got some closed loop nema 23 steppers (3x 3N and 1x2.2N), with drivers and I'm not 100% sure wich PSU choose.
This ones:
https://es.aliexpress.com/item/33056...584063c0ZzRVQU
Drivers are rated Vdc 24V-80V. The seller told me they use 24/36V 360W for two motors but reading the forum seems like using the higher voltage is better.
So I was thinking to buy 2x 70V 400W. This ones:
https://es.aliexpress.com/item/10050...c006H6V4p&mp=1
Any recomendations? Thanks!
https://uploads.tapatalk-cdn.com/202...555128847b.jpg
Re: Choosing a PSU fos steppers
Quote:
Originally Posted by
Trefhi
For 2 steppers I'd go 72V 500w per pair. But that's just me. Well, if it's only using 50%-70% it'll likely never fail on you :)
I run 60V on a basic open loop but have a 350w on each. Been working for years on my 25 size mill.
I've ordered a 60V 720w single unit now to save space in my new control box and I'm upping to a 72V 400w for my Z motor for an extra boost.
The 60V 350w ones will prob move to my sieg x2 rebuild at a later date. There's 36v on that machine atm and it's crap!!!!.
Re: Choosing a PSU fos steppers
Quote:
Originally Posted by
Trefhi
Personally I would use a toroidal with 3 caps and a rectifier this much better than a switch mode supply.
25-25 secondary in series will give about 68v DC when rectified.
Edit: 500 or 625Va would be more than enough for the toroidal.
Re: Choosing a PSU fos steppers
Quote:
Originally Posted by
Clive S
Personally I would use a toroidal with 3 caps and a rectifier this much better than a switch mode supply.
25-25 secondary in series will give about 68v DC when rectified.
What Clive said.
That's if you're confident and competent.
I'm not so, otherwise I'd have everything on a 1kw 70v unit :(
