Spindle start up with Drewtronics connected.

breezy

Arie
Staff member
When I installed the Drewtronics wiring into the Men's Shed router I was concerned about where to place the loose cable when the Drewtronics was removed from the spindle.

So I purchased a panel mount socket thinking just mount it on a bracket so the cable can be safely stored and won't get in the way.

Having seen this video from NYC CNC and seeing that the socket came with three terminals and that two of those terminals were switched when the plug was inserted, I thought how can I use this to prevent spindle start up with the Drewtronics still connected.

So I came up with this circuit to use an input on the MASSO that was high when the cable from the Drewtronics was unplugged from the "Safety/storage socket".

When the plug is inserted the switched contacts open and the sleeve connection pulls the MASSO input to ground (MASSO -ve). The +12v connection is left open by the switching action and the plug's +12v is not connected to anything.

So what I am requesting from @masso-support is an input that when it is high prevents spindle start up, either by cycle start or MDI entry.

Regards,

Arie.

Edit: Fixed inclusion of circuit diagram. The socket icon is not correct for the socket I'm using but it gets the idea across.
 

Attachments

  • Drewtronics-probe.jpg
    Drewtronics-probe.jpg
    111.6 KB · Views: 22

masso-support

MASSO Support
Staff member
nice idea @breezy and we also saw the NYCNC video, another thing you can do here is that when you plug the probe in the socket, the socket then disconnects your spindle enable signal, this way even if the spindle start command is given from the controller by mistake then it will not run while the probe is plugged in.
 

breezy

Arie
Staff member
@masso-support

Had a think about disconnecting the spindle enable signal and decided to modify the wiring for the Drewtronics probe. As I've run two 2 wire cables to the spindle, the wiring for the probe will remain standard for touch probing as shown in the drawing below. But for the Safety/Storage of the plug when the Drewtronics is removed from the spindle, I will install a relay so that when the Drewtronics is in use the relay will be energised and O/C the spindle CW enable signal.

Regards,

Arie.

PS. Don't know why the file upload is adding a grey background to the .jpg.
 

Attachments

  • Drewtronics-probe.jpg
    Drewtronics-probe.jpg
    219.5 KB · Views: 22
Top