On 4/6/2011 9:18 AM, andy pugh wrote: > I have 400V servo drives, 350V motors and 240V single-phase mains power. > > Is there any reason that my servo power supplies need to be anything > more than a rectifier and caps? I will probably add a PTC and an input > fuse too. > > Would a relay/resistor to discharge the caps on power-off be usual? > >
Do you have any concerns about the drives regenerating into the power supply during decels and causing a bus overvoltage - I'm assuming that the drives can regenerate... perhaps they cannot? I don't know why a relay/resistor wouldn't be a better solution for discharging the caps. Power goes off, the relay closes and the caps discharge.. Dave ------------------------------------------------------------------------------ Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
