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

PLC wiring (3) – Wiring of photoelectric sensors (retro-reflective)

We also discussed photoelectric sensors in Chapter 2, Switches and Sensors – Working Principles, Applications, and Wiring; in this section, we will learn how to wire a photoelectric sensor to an input module.

Figure 2.49 in Chapter 2 shows the wiring diagram of a retro-reflective photoelectric sensor.

The retro-reflective photoelectric sensor described in Chapter 2 can be made to switch to positive or negative depending on whether the input module to be used with it is sinking or sourcing. If the White (WH) is connected to positive, the Black (BK) will have an output (+ve) when an object is detected, and if the WH is connected to negative, the BK will have negative when an object is detected.

The following circuit diagram shows the wiring of a photoelectric sensor connection to a sinking input module:

Figure 7.23 – Photoelectric sensor connection to a sinking input module

Figure 7.23 – Photoelectric sensor connection to a sinking...