Book Image

Industrial Automation from Scratch

By : Olushola Akande
Book Image

Industrial Automation from Scratch

By: Olushola Akande

Overview of this book

Industrial automation has become a popular solution for various industries looking to reduce manual labor inputs and costs by automating processes. This book helps you discover the abilities necessary for excelling in this field. The book starts with the basics of industrial automation before progressing to the application of switches, sensors, actuators, and motors, and a direct on-line (DOL) starter and its components, such as circuit breakers, contactors, and overload relay. Next, you'll explore VFDs, their parameter settings, and how they can be wired and programmed for induction motor control. As you advance, you'll learn the wiring and programming of major industrial automation tools – PLCs, HMIs, and SCADA. You’ll also get to grips with process control and measurements (temperature, pressure, level, and flow), along with analog signal processing with hands-on experience in connecting a 4–20 mA transmitter to a PLC. The concluding chapters will help you grasp various industrial network protocols such as FOUNDATION Fieldbus, Modbus, PROFIBUS, PROFINET, and HART, as well as emerging trends in manufacturing (Industry 4.0) and its empowering technologies (such as IoT, AI, and robotics). By the end of this book, you’ll have gained a practical understanding of industrial automation concepts for machine automation and control.
Table of Contents (21 chapters)
1
Part 1: Learning the Concepts and Skills Required to Get Started
8
Part 2: Understanding PLC, HMI, and SCADA
14
Part 3: Process Control, Industrial Network, and Smart Factory

Describing manually operated switches

In manufacturing, there is always the need for an operator to start or stop a machine and there could be needed to manually perform some other form of control aside from starting and stopping. These usually require switches that can be operated by hand. Switches that are operated by hand are referred to as manually operated switches. Some examples are as follows:

  • Push button
  • Rocker switch
  • Toggle switch
  • Selector switch
  • Knife switch

We will explore each of these in the following sections.

Push button

A push button is a type of switch that closes or opens a circuit when a button is pressed or depressed. The button is designed to operate in two states (that is, ON or OFF). When it's in the ON position, an internal metal spring contacts the two terminals of the switch, allowing the current to flow. When ot#s in the OFF position, the internal switch retracts and the current will stop flowing.

Push buttons exist as normally open or normally closed...