Aluminium CNC log.

[jcb121]

So, Even though I have steppers, I'm going to upgrade them to something a bit more powerful. 4.2Amp Steppers

But, How do I power this? I could get a 600watt power supply or I could get a transformer from Farnell and risk blowing myself up.

Just wondering the best way to power it, I'm guessing a few of you guys have them.

so how have you guys done it?

[JAZZCNC]

So, Even though I have steppers, I'm going to upgrade them to something a bit more powerful. 4.2Amp Steppers

But, How do I power this? I could get a 600watt power supply or I could get a transformer from Farnell and risk blowing myself up.

Just wondering the best way to power it, I'm guessing a few of you guys have them.

so how have you guys done it?

Build your own it's not hard, just need toroidal transformer, capacitors and bridge rectifier. . . there also prefered because Unregulated supplys are simple and more forgiving regards back EMF.
Steppers when decelerating from high speeds can become alternators sending power back into the drives which gets passed back to the supply. Linear regulated type supplys struggle to handle this and can tripout because often they have protection circuits. Where as unregulated supply's just absorb most of it in there filter caps.

Usually works out a bit cheaper as well if you want high volts & amps.

How many volts & Amps are you looking for.?

[Jonathan]

Even with those cheap drivers I would expect higher acceleration than you are currently using. Keep increasing the acceleration setting until either it stall or the machine shakes about too much, then back off a little to be safe. Aiming for something like 500-1000mm/s^2.

If you put a cable tie round each stepper motor that'll stop the plastic wire guard things snapping off.