255.255.255.0
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Hello all. Sorry, I know this is not a PLC question but if anyone knows about the ABB DCS 500 series of drives I would really appreciate some help. I have one that lost it's electronics power. Display was dead and I couldn't find any control voltage leaving the power board (where the 120VAC feeds in and converts to low voltage control power). Removed the board and found a couple of surface resistors that looked like they had been hot. Since it was made in 1995 I just figured that it gave up the ghost because of age. Sent the board out for repair and when I installed it again yesterday I still am not getting anything. Display is still dead and I am not finding the 48VDC on terminals 9 and 10 of X6, nor any 10 VDC anywhere on X4. So, my question is, does anyone have an intimate knowledge of these drives? If so, where would you start looking next? Are there any board schematics out there that I can get to troubleshoot the power and control boards without having to physically trace every stringer on the board? Any help would be greatly appreciated.