Week #5: Eaton Sensor Handouts; 2, 3 & 4 Wire Switches

[rjagodowski]

Here is a catalog of Eaton Switches:

EatonSwitches_Vol08_Tab02.pdf

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Note that this is different than the Sensor Learning Course we've been using which is attached below. This document is just to demonstrate the variety of styles available when selecting a limit switch. This is different than the document posted in Week #2.

This week we will continue working through the Eaton Sensors handout with Photo-Electric Sensors, and then our discussion will focus on 2, 3 & 4 wire sensors, sensor timing and time permitting, enclosure ratings.

Here's a link from Wikipedia on Retro-Reflectors, their construction and operation.

We'll also spend a bit of time discussing 2-wire, 3-wire and 4-wire sensors. Some supplemental information from Wisc-Online about:

Two Wire Sensors
Three Wire Sensors
Four Wire Sensors

An explanation of the Difference between NPN and PNP Devices. Also info on sinking and sourcing.

vol08_tab12_Sensor Learning Course.pdf

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