Re: [CAD_CAM_EDM_DRO] LIMIT SENSORS FOR MACHINE AXIS

John,

For limit switches there are basically two choices. One is a micro switch
and the other is a inductive proximity sensor.

I like the inductive proximity sensor as they are normally easy to install
and are non contact. You should select the ones with 2 mm normal sensing
distance. I buy mine from www.Automationdirect.com

Our breakout boards support either one.

You will want a switch on both ends of the X and Y axis travel and one at
the top of the Z axis travel.

In Mach one end will do double duty for the home and limit.

Robert Colin Campbell
Bob Campbell Designs
www.Campbelldesigns.net
Mach 2/3 breakout boards
Relay boards
Spindle Speed boards
Stepper motors
Plasma Torch Height control

----- Original Message -----
From: "john_glynn57" <john_glynn57@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, March 26, 2008 12:03 PM
Subject: [CAD_CAM_EDM_DRO] LIMIT SENSORS FOR MACHINE AXIS


>I am building a router and am wondering what are the best type of
> sensors to use for the ballscrew driven axes:
> 1 referencing
> 2. limit switches
> 3. stop switch
>
> my problem is that there seems to be too much choice but im sure that
> there is a best option. Could anyone help me make a choice.
>
> John glynn
>
>
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