Controller hardware suggestions for first DIY build

txtrone wrote: www.geckodrive.com/support/g251x-rev-9.html

Sorry, I should have asked for a link to motors. Mainly to work out the voltage you need.

All I see on the motor is '60HS66DF1T'

Their is not a whole lot of info about it on CandCNCs website either:
www.candcnc.net/store-home/300oz-motor/

Normally if a motor has no data sheets, I'd say buy another motor but heck you have got them now.
I would probably get Longs Motor DM542A drives

The G251x is limited to 50 volts. So get a 10 amp 48 volt Meanwell Switch mode power supply.

I know those drives work well and are hard to kill as I originally used them on my machine. I ran them with a Mesa card with 20x stepping

If you still have the G251's see if you can measure the current limiting resistor to see what amperage they were running the motors at and set the drives up for that. at a guess, they will be in the 2.8 to 3.2 amp range.

The G251x is limited to 50 volts. So get a 10 amp 48 volt Meanwell Switch mode power supply.

I would not use 48V on a 50V drive. The back EMF could kill them.

40v would be safer. Just my opinion

Clive S wrote: I would not use 48V on a 50V drive. The back EMF could kill them.

40v would be safer. Just my opinion

I agree, the first time the machine stops abruptly, it will kill the drive.
Gecko uses 100V MOSFets on 80V rated drives so i have seen plenty of them go up in smoke, but i never managed to kill one of them as they do mention on their web site and provide the schematics for wiring a power resistor and a relay to prevent from killing the drives. I have yet to see some one else use that. I know i did.

All my 50V drivers run at 48V without fail (yet)...

I think having multiple drives from the one power supply (mine are switched-mode) helps.