my sweo ac vector control (fadal vmc15 year 1994) has a problem.
It break the 2A fuse on the snubber card especially when i go in hi speed (over 2000 rpm).
I have also noticed that the 27 ohm regen resistance almost go on fire when the spindle run
I suppose that the problem could be : or a failure of the big capacitor , or the scr that must to shut-off this part of circuit when the motor run ,or the drive of the scr , or at least a problem of the power transistor
Any suggestion ?
Thank to any one that can help me and sorry for my poor language