hello all, i recently upgraded from a 2.2kw ATC spindle up to a 3.7KW ATC spindle. I am now running the Hitachi WJ200-037LF drive and it is wired to our 3 phase panel. all of this controlled by Mach3 and a BobCampbell soundlogic combo board. the new spindle is a HSD ES915A2P.

i have gone through all manuals involved and reset to defaults several times trying to solve this problem. everything seems set right so far. the spindle fires up and runs to whatever rpm i pick. but when i try to slow the spindle down it doesnt arrive at the desired rpm, it instead freewheels to a stop. and if i ask it to stop from a speed of 12000 rpm, it pulls about 1.2 amps draw until it stops in over a minutes time.

somehow this spindle should slow down as fast as it accelerates.

any ideas? pulling my hair out! ha ha ha! the vendor that sold me the system can not help me he says. ive tried to reach people at hitachi with no luck.

im sure its just a setting in there somewhere. but which one!???

antsy in the pantsy, thanx in advance!

jody