1. We know that reliability is paramount in industrial production. Every producer hopes their production line will always be in optimal working condition, but reality tells us this is impossible. We can, however, minimize equipment malfunctions and reduce their probability. In this respect, PLC control systems are far superior to traditional relay controls. This is evident in their appearance; relay control systems have more wiring, are more complex to install and disassemble, and have many wires densely intertwined, making them prone to scratches and damage. Furthermore, the electromagnetic waves from these wires can easily interfere with each other. PLC devices, on the other hand, are simpler and more organized, less prone to self-interference and damage.
2. As mentioned above, relay control involves numerous circuits, occupies a large space, and is time-consuming and labor-intensive to install and dismantle, which significantly increases production costs. Furthermore, relays are unsuitable for projects with frequent production changes, requiring users to wait patiently. This is where PLCs excel, enabling rapid modifications to meet the specific needs of the production team.
3. PLCs are programmable, as the name suggests (Programmable Logic Controller), which is crucial. By writing different instructions for the PLC control modules, one or more modules can play countless roles in different projects. Various digital input/output modules and analog input/output modules each have their own characteristics and can be reused repeatedly, greatly improving worker efficiency while reducing operating costs, resulting in high cost-effectiveness.
