New power supply question for MA860H Stepper Motor Driver

[mike3385]

I converted a grizzly benchtop mill about 7 years ago to a basic cnc. I have been using the MA860H Stepper Motor Drivers for each axis and was powering each driver with a cheap Chinese 48v 10a power supply. (1 for each driver).

Over the past seven years I've gone through 3 power supplies, all of which blew in the same area. I wanted to upgrade to something that i know will be dependable since i had a job lined up today and blew the power supply as soon as i plugged it in.

I was checking out cnc4pc.com and saw an Unregulated Linear 960W/ 48 VDC/20A power supply. Will that be able to handle all three drivers at the same time? My current settings on the drivers are set at peak current 7.2a and rms current 5a.

Here's a link to the new power supply in question and the driver I'm currently using if anyone can help me out with this.

https://cnc4pc.com/motion-control/st...8-vdc-20a.html

MA860H Stepper Motor Driver Max 80VAC or 110VDC with 2.4-7.2A|MA860H|Stepper Motor Drivers

I'm not the greatest at understanding the world of electronics, so please excuse my lack of knowledge with this. Thank you

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[NIC 77]

It looks like the drivers you have accept AC power input.........

Is there any reason you are planning on using another DC power supply instead of an AC transformer to run your drivers directly from AC power?

I've been asking my own questions about this subject here, so I'm not an expert on it:

http://www.cnczone.com/forums/leadsh...ml#post2060362

[mike3385]

It looks like the drivers you have accept AC power input.........

Is there any reason you are planning on using another DC power supply instead of an AC transformer to run your drivers directly from AC power?

I've been asking my own questions about this subject here, so I'm not an expert on it:

http://www.cnczone.com/forums/leadsh...ml#post2060362

I found your thread a couple days ago and was wondering the same thing. I guess I just thought the dc power supply would be easy and straight forward haha. I'm just a little confused as to how to add up the power usage and what id need. Being 3 drivers each with 7.2a peak and 5 rms would require a power supply of at least 15 or 20a? Is bigger better or worse?

[NIC 77]

I found your thread a couple days ago and was wondering the same thing. I guess I just thought the dc power supply would be easy and straight forward haha. I'm just a little confused as to how to add up the power usage and what id need. Being 3 drivers each with 7.2a peak and 5 rms would require a power supply of at least 15 or 20a? Is bigger better or worse?

I'm not a subject matter expert on this.

Gecko has some good info that talks about the differences in regulated or unregulated power supplies. Perhaps someone else can chime in. I am contemplating a torroidal transformer as Al suggested in my thread to run from AC power. Understanding the differences in power supplies is not my strong point.

http://www.geckodrive.com/step-motor-basics

[mike3385]

I'm not a subject matter expert on this.

Gecko has some good info that talks about the differences in regulated or unregulated power supplies. Perhaps someone else can chime in. I am contemplating a torroidal transformer as Al suggested in my thread to run from AC power. Understanding the differences in power supplies is not my strong point.

http://www.geckodrive.com/step-motor-basics

I actually talked to Arturo from cnc4pc and he mentioned that using a torroidal style power supply I should be good so I may take the plunge and purchase one of those

[ger21]

One of these should work well.
63V and 16 amps.

PS-10N63 - 1000W 63V Power Supply - AnTek Products Corp