Re: [CAD_CAM_EDM_DRO] Re: Prox switches

In a message dated 3/3/2006 8:19:01 P.M. Eastern Standard Time,
hjjohnson@... writes:

I'll most likely end up getting these, I noticed
however that they are all NO, is there any out
there that are NC?? I was always under the
impression that NC was the switch of choice for
limit switch's?

Jarrett



There are two basically different types of proximity switches as regarding
the output. One is a "sink" configuration. This means that the switch
basically grounds the circuit when activated. To use this type you would supply
voltage to the input of whatever device you wish to switch (such as a relay)
and attach the side that would normally connect to the ground or common, to the
input of the sensor. The other type is a "source" configuration and does
pretty much what the name implies and outputs the voltage for turning on/off a
device or input to a PLC, etc.

Randy A.


[Non-text portions of this message have been removed]