I'll take a look at the PCBs to see the caps and how they look like. I should note that this happens on days with high ambient humidity like 85% and more. I have some silica gel bags inside the cabinet, I don't know if they really help but sure they don't hurt. Anyway these drives are from the early 80's so I'm more than ready to expect a failure in any time, but I hope they to last a couple of years more.
In any case I'm planning to buy new DC servo drives sometime soon. I'm looking for the AMC drives as Sam on this list once told they used them for a Mazak. There are also the ones from Granite Devices from finland, fairly cheap. What I would like to measure is the real power consumption because in the manuals It says the Z servo has something like 1.2 Kw and the X servo 0.9 Kw (My concerns is, is this a normal power output for servos on a 1 meter between centers lathe?). I'm affraid that may be the numbers are for another Mazak smaller than this QT20 although the manual says QT20. Or is it that with ballscrews the power needed is quite low compared to what one could be used to with normal screws and brass nuts? Sorry for the little OT. Leonardo. 2016-08-02 20:54 GMT-03:00 Gene Heskett <ghesk...@shentel.net>: > That might well be Leonardo's problem too. High humidity might be > electrical leakage caused by the leakage products on the pcb from a > failed cap, so while I am not as positive in Leonardo's case, its a > possibility that should cause it to be visually inspected for such > leakage. Its generally white, looking a bit like dried pancake batter. > -- *Leonardo Marsaglia*. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
