[laminated]

Hello, I'm trying to find out if it's possible to run my stepper drivers on an off-grid solar system from something like a 24 volt audio power conditioner supplied by deep cycle AGM batterys?
I thought this might be the best option due to the High RMS values.
Currently I'm X2 mini Mill controller uses a 400-watt switch mode power supply. The spindle motor is 350 watts and is likely an inductive load. From my understanding I would need a power inverter roughly 7-10 times that in order to start the motor and would still be dealing with roughly a 20% inefficiency converting to AC then back to DC. 7500 watt pure sine wave inverters aren't exactly cheap...
I'm using the M542T with ST-V2 BOB and 425 oz.in nema 24 steppers.
Any input on this is greatly appreciated!

[109jb]

If you have DC power then why would you want to convert it to AC so that you can use a switching power supply to get it back to DC?

[laminated]

I really don't. I don't see at all how it's necessary other than voltage sag while draining batteries. Which was my reasoning for considering using something along the lines of a power conditioner. 20% inefficiency of going through power inverter is a lot.

I'm not sure how much real-world power will actually be used by the three stepper motors along with the spindle motor. I guess that depends on what your Machining and how aggressive the cut. I understand that stepper motors have a regenerative effect and don't use nearly as much power once they cycle a few times.

[skrubol]

I think I would skip the power conditioner as well. As long as everything can handle 32v or so (max you'd probably see on a fully charged 24v battery,) and be able to run at 22v or so.
X2's usually use DC spindle motors, through a simple speed control. Most that I know of use 90VDC motors that are easy to run from rectified 120VAC. If that's what you've got you'd either need an inverter for that (1-2kW might do,) or get creative with a boost converter. Alternately I suppose you could replace the stock spindle motor with something that can run from 24v.

[Iron-Man]

Hello, I'm trying to find out if it's possible to run my stepper drivers on an off-grid solar system from something like a 24 volt audio power conditioner supplied by deep cycle AGM batterys?
I thought this might be the best option due to the High RMS values.
Currently I'm X2 mini Mill controller uses a 400-watt switch mode power supply. The spindle motor is 350 watts and is likely an inductive load. From my understanding I would need a power inverter roughly 7-10 times that in order to start the motor and would still be dealing with roughly a 20% inefficiency converting to AC then back to DC. 7500 watt pure sine wave inverters aren't exactly cheap...
I'm using the M542T with ST-V2 BOB and 425 oz.in nema 24 steppers.
Any input on this is greatly appreciated!

First add up the total amount of power you will need, say 2KW etc.
Second, purchase a inverter that has a pure sine wave output. This is key for any timing circuits / software..

Hope this helps,

Iron-Man