Controls

Logic Diagrams

Logic Diagrams

C&I, Controls, Technology 5 Tháng Tám, 2014 at 8:21 sáng

Engineering Logic Diagrams Logic diagrams have many uses. In the solid state industry, they are used as the principal diagram for the design of solid state components such as computer chips. They are used by mathematicians to help solve logical problems (called Boolean algebra). However, their principle application at industrial facilities is their ability to present component and system operationalRead More

What does PLC consist of?

What does PLC consist of?

Controls, PLC 13 Tháng Sáu, 2014 at 12:57 chiều

A typical PLC can be divided into parts, as illustrated in Figure 8 which are Central Processing Unit (CPU) Input/output (I/O) Power Supply Programming Device We shall briefly discuss each part here. Central Processing Unit (CPU) The processor (CPU) is the “brain” of the PLC. A typical processor usually consists of a microprocessor for implementing the logic and controlling theRead More

Why Use PLC?

Why Use PLC?

Controls, PLC 13 Tháng Sáu, 2014 at 12:49 chiều

The softwiring advantage provided by programmable controllers is tremendous (Figure 5 shows a practical industrial example). In fact, it is one of the most important features of PLCs. Softwiring makes changes in the control system easy and cheap. If you want a device in a PLC system to behave differently or to control a different process element, all you haveRead More

What is a PLC?

What is a PLC?

Controls, PLC 13 Tháng Sáu, 2014 at 12:34 chiều

Programmable logic controllers (shown in Figure 1) are now the most widely used industrial process control technology. A programmable logic controller (PLC) is an industrial grade computer that is capable of being programmed to perform control functions. The programmable logic controller is designed for multiple input and output arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibrationRead More

Difference between PLC,DCS & SCADA

Difference between PLC,DCS & SCADA

Controls, DCS, PLC, SCADA 13 Tháng Sáu, 2014 at 12:19 chiều

In the past the strength and weakness of both the automation technologies were well understood. So it was easy for engineers to select the one that suits their application, but now due to the advent of microprocessors both the technologies are merging.The requirements which are thought to be exclusive to one technology can be found in the other one too.ButRead More