Re: How to convert a Grizzly 1006 Mill to CNC

Per,
Sorry. (NC) is normally closed. With a series connection of NC
switches any one opening opens the circuit. This circuit is connected
to a safety relay (ebay pilz safety relay) which shuts down power to
the machine on an estop.

(NO) is normally open. If the NO home switches are wired in parallel
and this circuit is connected to one of the port pins the computer
will see the switch close when homing.

Wiring a machine isn't hopelessly complex but it isn't simple either.
If you don't have the time or energy to do some pretty in depth study
find someone locally to help you. This group is good for
generalizations but not connect this wire to there.

Roger

> Hi Roger
> I am sorry but a newbie has a hard time understand the I/O and (NC)

and (NO)

> Could you be a little more descriptive.
> I am sorry for this but I am not inte enginering, missed that in school.
> Per
> ----- Original Message -----
> From: vrsculptor
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Sent: Friday, October 19, 2007 11:48 PM
> Subject: [CAD_CAM_EDM_DRO] Re: How to convert a Grizzly 1006 Mill

to CNC

>
>
> Per,
> Limit switches (NC) should be wired in series to the estop relay. If
> you pass that information back to the PC thats one I/O. If you hit a
> limit it should be obvious which one it is. On home switches (NO) I
> have mine wired in parallel and home one axis at a time, Z, then Y
> then X. Another I/O. A singe port should be fine without spindle
> control. How to do spindle control is entirely dependent on which
> hardware you select. A PLC may be the best answer for that.
>
> Roger
>
>
>
>
>
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