Spindle Stop?

**Ricardoco** · 07-01-2013

Originally Posted by manofgresley

Hi all.

Firstly, many thanks for all the help you have given me so far, especially with my LED + Limit Switch query.

While in my garage today, doing some wiring on my cabinet, I suddenly had a thought.

My Mill is on a standard 3 pin,13 amp plug, obviously it will be on a separate supply to the cabinet, my thought was this, what happens if the fuse blows to my Mill, will the Drivers keep on turning the Stepper motors, ie DISASTER. Please remember, I have no knowledge of Mach 3 yet, that's my next big learning curve,I assume that the electronics would detect an increase in Torque on the Stepper Motors and then shut down the electronics, trouble is i do not like assuming, because it makes an ASS OF U & ME, looking forward to your advice.

Regards

Ray

Ok if your cabinet loses power the system could get an E-Stop signal from a relay that also lost power and changed state. With standard stepper drivers the system would not detect a failure and indeed the result may not be good but as these steppers would lose power along with the cabinet the worst that would happen is mach would carry on running and the mill would just stop moving. the relay I mentioned at the begining is just a way of letting mach know that something has happened.

Rick

**manofgresley** · 07-01-2013

Hi Rick, many thanks for quick reply, but i don't fully follow you.

My current condition is this, if Mill loses power, Steppers keep going, BAD situation, if cabinet loses power Mills X,Y & Z axis stop, but the Spindle keeps rotating, were do i fit the relay? if you have time a sketch would help.

Regards

Ray

**Ricardoco** · 07-01-2013

Originally Posted by manofgresley

Hi Rick, many thanks for quick reply, but i don't fully follow you.

My current condition is this, if Mill loses power, Steppers keep going, BAD situation, if cabinet loses power Mills X,Y & Z axis stop, but the Spindle keeps rotating, were do i fit the relay? if you have time a sketch would help.

Regards

Ray

Ok where does your mill get its power??

**Ricardoco** · 07-01-2013

Ok here is a simple block diagram, its not the only way of doing it, but it lets me show you my thinking, and you can alter it to suit your system and i will be able to see what you have..