Motor Controls Study Guide

For 2025-2026 Motor Controls

Mushroom Head E-Stop

What is this symbol? (Do not include normally open or closed)

Flow Switch

What are these symbols

Float or Level Switch

Identify these symbols

Temperature Switch

Identify this symbols in this image

Pressure Switch

Identify the symbols in this picture

Limit Switch

Identify the symbols

Coil

What is this?

2 Position Selector Switch

What is this

3 Position Selector Switch

What is this

Push Button

What is this

Off Time Delay

What is this image?

On Time Delay

What is this symbol?

Photo Eye

What is this?

Contactor does not have an overload

What is the difference between a contactor and motor starter?

Proximity Sensor

What is this

Mirrors

Retroreflective uses what?

Two senders and recievers from two units

Thru Beams use?

The difference in light or motion

Diffuse uses?

Metal detector

Inductive Proximity is a?

Senses non metallic objects

Capacatibe Proximity sensor does?

Long range detection, but have a close up blind spot.

Ultrasonic Proximity sensors are used for?

not eletric

magnetic proximity switch is?

2 wire has no holding/latching/auxilary contacts while the 3 wire does.

What is the difference between a 2 and 3 wire control system?

stopping anything

3 buttom series is used for?

starting anything

3 button parallel is used for?

Off delay requires it

Does an On or Off delay require a signal wire?

Off delay, it also must have constant power

Does an on or off delay instantly activate?