i have a question about variable frequency drives.can one unit run more than more than one motor of the same horsepower & voltage?the reason i ask is we have a machine that turns spindles for buffing stainless steel. we use a 40:1 ratio gearbox now , but that is still too fast.this machine has 12 spindles. i belive each motor is 3hp 3 phase 440 volts 1725 rpm.if a VFD can control more than one, how many max?THANKS for any replies!
