Quote Originally Posted by vre View Post
3 phase transformer from 400V to 230V would be ok ?
Yes, but probably a bit expensive?

Quote Originally Posted by vre View Post
Can i run it from 1 phase 230V without transformers ?
The driver inside has 3 big 420V 270uf rubycon MXG(PET) capacitors ..
To operate with single phase continuously at the rated power you would need three times the capacitance - so an extra 1620uF. Keep the wires from the new capacitors to the existing ones short. Also check the current rating of the rectifier.

Bear in mind that if you're not using the servo drive near it's rated power, you may well be fine leaving it as it is. Have you tried contacting the manufacturer about operating on single phase? They might have already included enough capacitance to work with single phase.