Cut Sheet

V8-T12-2 Volume 8—Sensing Solutions CA08100010E—November 2012 www.eaton.com
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12.1
Sensor Learning Course
Learning Module 23: Limit Switches, Proximity Sensors and Photoelectric Sensors
Limit Switches, Proximity Sensors and Photoelectric Sensors
Contents
Description Page
Learning Module 23: Limit Switches,
Proximity Sensors and Photoelectric Sensors
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T12-4
Sensor Basics . . . . . . . . . . . . . . . . . . . . . . . . . V8-T12-4
Limit Switches . . . . . . . . . . . . . . . . . . . . . . . . . V8-T12-7
Actuators and Operating Heads . . . . . . . . . . . . V8-T12-9
Limit Switch Types . . . . . . . . . . . . . . . . . . . . . . V8-T12-12
Inductive Proximity Sensors . . . . . . . . . . . . . . V8-T12-15
Inductive Proximity Sensor Influences . . . . . . . V8-T12-18
Capacitive Proximity Sensors . . . . . . . . . . . . . . V8-T12-21
Capacitive Proximity Sensor Influences . . . . . . V8-T12-22
Photoelectric Sensors . . . . . . . . . . . . . . . . . . . V8-T12-24
Photoelectric Sensor Styles and Uses . . . . . . . V8-T12-26
Modes of Detection . . . . . . . . . . . . . . . . . . . . . V8-T12-27
Excess Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T12-30
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T12-32
Sensor Output Circuits . . . . . . . . . . . . . . . . . . . V8-T12-33
Switching Logic . . . . . . . . . . . . . . . . . . . . . . . . V8-T12-36
Output Timing Modes . . . . . . . . . . . . . . . . . . . V8-T12-37
Enclosure Ratings . . . . . . . . . . . . . . . . . . . . . . V8-T12-39
IEC Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T12-40
Review Answers . . . . . . . . . . . . . . . . . . . . . . . V8-T12-41
Overview—Eaton University Training
Limit Switches, Proximity Sensors and Photoelectric Sensors
Knowledge
Powers
Success.
It takes knowledge to
succeed. But, knowledge
doesn’t just happen. It’s a
continuous process of
learning. Only lifelong
learning allows you to keep
in step with a world that
is constantly changing.
So, you need to get smarter
about learning and explore
new ways of thinking. You
need to take advantage of
new experiences and employ
cutting edge technologies.
Assess and develop your
talents. Empower yourself to
find the answers and
solutions of tomorrow.
Learn.
Succeed.
Training at Eaton
Corporation
Sensor Learning Course
The following pages contain a
complete learning course that
will take you through the
basic operation and
application of limit switches,
inductive and capacitive
proximity sensors, and
photoelectric sensors.
Whether you’re a novice
looking to get up to speed
fast, or are already
experienced in this area and
just want to sharpen your
skills, this course will be time
well spent.
This course is part of the 101
Basics Series from Eaton
University Training, a
comprehensive series of
learning modules covering a
wide variety of power and
control subjects.
About Eaton University
Training
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exists to keep you, our
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