I am having all sorts of trouble with my plasma cnc electronics. I am using 3 x SD2H044MA 4.2 amp drivers and have two psu's one 27volt 13amp and 1 36 volt 10amp....Nema23's that run cold and very well - when the drivers are working!

Loads of problems with one or another axis 'freezing' when the plasma fires...sometimes it can cut 20 holes without problem others just one stops an axis with the red fault light showing. Tried everything regarding caps, earths, filters...you name it.

Last week it fried the BOB so I bought a new different type. Fitted it yesterday and the first plasma cut fried the new BOB.

I need to get it working as I have work coming in (at last)...so thinking of getting the Gecko 540 4 axis (only really need 3) drive from the USA. Costs less than £200 delivered.

Don't want to waste more time and money...anyone used these or can recommend anything better??

Grateful for any help on this as I am tearing my hair out!!!!!