Originally Posted by
9 1/2
FINALLY I then powered up the mill with the motor left disconnected.
The enable procedure went fine with the screen showing "spindle HI"
Not soon after I notice the familiar smell of starting to melt / burn
wire or electrical component (that smell we all dread, secondly only
the seeing the "magic smoke" let out)
I read through your posts a few times to try and get the gist of what is going on, If you have smoke/smell with the motor disconnected then you have a problem with the drive, I would say, I assume you do not have anything connected in the way of a contactor etc between the VFD and the motor?
You have 1 phase coming in to this machine? And the VFD is fed with 220~240 1 phase?
Normally it is hard to fry a VFD as it should go into current limit or shut down if short or ground problem.
Where is the spindle contactor wired in that you mention? If there is an input reactor, this is a 3 phase choke with three windings in series with each input phase, if three phase input.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.