Automation relays play a crucial role in modern industrial control systems, facilitating reliable and efficient operation in various automation processes. These devices serve as the backbone of numerous automation applications, from controlling machines and switching devices to ensuring safety and protecting circuits. This article will explore the basics of automation relays, their key components, and the various industries where they are indispensable.
What is an Automation Relay? An automation relay is an electromechanical or solid-state device used to control a circuit by opening or closing its contacts in response to an external input signal. In simple terms, relays act as switches that control the operation of other electrical components or systems. When an external voltage or current is applied to the relay’s coil, the relay’s contacts either open or close, completing or interrupting the circuit, depending on the design of the relay. Relays are typically categorized into two types： electromechanical relays and solid-state relays. Electromechanical relays consist of a coil and mechanical contacts, while solid-state relays use semiconductor components to perform the switching operation without moving parts.