Question before Ordering

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Question before Ordering

Postby forti001 » Wed Feb 16, 2011 8:15 pm

Hi, I am Michael from GErmany and i am going to build my own Engraver Cutter.
But i have a couple Questions about The Motors and the Drivers.
I was looking for these Stepper Motors and for these Controllers.
What do you think? Overpowered or to small
Please let ne know.
Thank you.
ST4209L1704 from Nanotec
and the Digital Driver
Leadshine DM556 from Leadshine
and of course the Power Supply
Sorontec 48Volt - 320Watt - 6.7amp

Nice ? or not useable

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Re: Question before Ordering

Postby bdring » Wed Feb 16, 2011 8:51 pm

I think the motors and drivers are fine. The inductance of the motors is higher than some, but I think you will be fine. My NEMA17 motors start to get hot at 24V and 1.6Amp. At 48V you will have to lower the current a lot and possible get near the 0.50 amp min on the driver. I think you are better to use 24V power supply. You might want to add some devices in the future that run off 24V or that have a linear regulator that would be 36V max. I sometimes buy 28V power supplies that can be adjusted up to at least 30 and down close to 24V.
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Re: Question before Ordering

Postby r691175002 » Thu Feb 17, 2011 12:45 am

Your motors are fine, but the drivers are opto-isolated which means that they may or may not work with the retina controller.

You don't really need a full 48V on such a small machine. It will work but you may end up needing a second power supply for 12 or 5 volts. If you use a 24V power supply you can use linear regulators no problem which is easy.
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