![]() ![]() By following the diagram, we can identify the contacts as follows:Ī normally open contact will not conduct any electricity while the coil is de-energized. In this case, the positive terminal is terminal A and the negative one is terminal B. Note that a DC relay will have a polarity assigned to the terminals while an AC relay will not. The relay above features a 24VDC coil between A and B contacts. Furthermore, it’s important to quickly determine the configuration of a specific relay and circuit based on the diagram on the front of a specific relay. It’s important to know the terminology as well as the difference between the two. As the coil is energized, the normally open set of contacts are closed and the normally closed are opened. Industrial Mechanical RelaysĪ mechanical relay will contain two main components: a coil & one or multiple sets of contacts. In this article, we will explore a simple “ice-cube” or industrial relay, go over the basic functionality and explore the wiring process. Although a relay isn’t recommended for many cases, it should still be used for loads which require a high amperage: motors, heaters, actuators, etc. They do have some drawbacks one of which is the fact that they break down much faster due to repetitive motion. Although you won’t find any relay based logic circuitry today, they still play an important role in modern control systems.Ī mechanical relay has a major advantage over a solid-state contact: it’s able to conduct large currents & supply loads which would require a much larger and expensive semiconductor. These fundamental building blocks of electrical circuits allowed the first automated systems to function without the need of modern PLCs and computers. Industrial Relays have been used in Automation for decades. Explore tutorials For Individuals Community The logic, however, will remain the same. You can consult the official documentation to see the different syntaxes. The only difference will be a syntax specific to each language. Note that the package's operation of the package is the same regardless of the language used. For this example, we will use Python codes to communicate with a virtual PLC (PLCSim Advanced). It is an open-source package (or library) developed for several languages, such as VB, C++, Java, Python.etc, which allows us to communicate inherently via the S7 protocol (GET/PUT access).In this tutorial, you will learn how to use Snap7 to communicate with an S7 PLC. It has never been easier to communicate with PLCs or other industrial devices.If you wantwould like to develop a solution to communicate with a Siemens PLC, Snap7 is the ideal tool. Their adoption offers great flexibility when choosing equipment and dramatically facilitates communication between several different devices. ![]() Industrial Ethernet and other TCP communication protocols have become a standard in the industry. ![]()
0 Comments
Leave a Reply. |