Hello! I need to replace 3 servodrives (2kW, 1,5kW and 0,75kW) in Biesse retrofit and it seems that three 8i20 will have to take over those motors. The question I am trying to solve at the moment is DC supply for 8i20 and there are several points I need to address: 1) should I place rectifier bridge + capacitor for each drive separately or feed them from one source? 2) what is suggested max ripple voltage for 8i20? 3) do I understand correctly that rectifying 3phase 380VAC will result in something around 540VDC which exceeds 8i20 limits and I should use 1phase 230VAC (adding transformers seems to reduce AC voltage seems like unjustified cost)?
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