How to Wire Sensors to a PLC - Part 1

Have you ever wondered how the digital and analog signals, coming from devices such as valves or sensors, are connected to the PLC's input and output modules? In this video, using a practical example, you're going to learn exactly how these field devices are wired and connected to the PLC's input and output modules. Okay as you can see, here I've got a few different PLC input and output modules. Each one of these modules is wired to different devices in the field such as switches, valves, temperature or pressure transmitters. In this video we're going to explore how these PLC input and output modules are wired to these devices. To get started let’s take closer look at this input module here. This is a S7-300 analog input module. When you order this module from Siemens and open the box you'll see something like this. Now if you open the front door for the first time, you'll be surprised because you'll see that there is nowhere you can wire anything to this module and that's where you'll say what the heck?!! Now what should you do? To be able to wire your control signals to this module you simply need to buy an additional accessory called a "front connector". Now how does this work? To use the front connector you first need to wire the control signals to these terminals and then install the front connector on the PLC module. To install the front connector on your PLC module you should first hold down this module lock here and then simply push the connector into the module to install it. As you can see, the wires coming from the field devices are connected to the front connector via wire ferrules. You always need to use these wire ferrules while wiring the control signal to the front connector but before that you should first connect the wire to the ferrule. So you first put a wire ferrule on your wire and then connect that to the front connector's terminal. Now let’s see how to do this. The first thing that you need to do to connect a wire to a wire ferrule is to remove a chunk of insulation from the end of the wire using a wire stripper and then connect the ferrule to the wire like this. When you have the ferrule on the wire you should crimp the ferrule using the crimping tool to make sure that the ferrule is firmly attached to the wire. Now the wire is ready and can easily be connected to the front connector. Now here's what I want from you in the comments bellow this video . What have you learned from watching this video? Can you imagine implementing something from this video in your next PLC programming project? A great motivator for us to produce free valuable content for you is the audience’s acknowledgement that they found this video useful. If that describes you, please hit the LIKE button. That will also help others to more easily find our videos on YouTube. Be sure to subscribe to our YouTube channel if you haven’t already done so. When you subscribe, each new video will be sent to you as quickly as it is published. Thank you so much for watching. RealPars has a large, continually growing library of Practical Programming lessons. Visit www.realpars.com where you can sign up for a free one month trial. In your trial, you will have instant access to our entire library as well as the new videos that are produced weekly. With these videos, you will advance your programming skills using step by step, easy to follow practical programming examples. You will also have access to the questions/comments arena, where you are encouraged to ask questions, make suggestions, collaborate with peers, write about your experiences, and have the opportunity to network with people that are interested in the same professional field that you are. You may cancel your subscription at any time. To learn more head on over to realpars.com now, where your free trail awaits. You are just a few short clicks away from learning valuable skills and starting your path to a new career.

Channel: RealPars

Views: 339,342

Rating: 4.9292288 out of 5

Keywords: SIMATIC Manager, tia portal, How Are Field Devices Wired to PLCs? - Part 1, plc inputs and outputs, plc i/o modules, plc installation, plc intro, plc interview questions, Training, PLC wiring tutorials, PLC wiring connection, PLC examples, plc eLearning, PLC education, PLC output wiring, plc programming, PLC automation, S7 300 training, plc full course, plc funny, plc for dummies, PLC hardware, plc lecture, plc control system, plc connection, front connector

Id: qeBAz_XXUWs

Length: 5min 44sec (344 seconds)

Published: Fri Jul 22 2016