Ahmed Blog

What is a PLC? Programmable Logic Controllers (PLC) continue to emerge as new technologies are added to their capabilities. The PLC started out as a substitute for transferring banks. Gradually, various deceptive and logical deceptive tasks were added. Today they are the brain of many automated systems, processes and specialized equipment. PLCs now integrate smaller cases, faster CPUs, networks and a variety of internet technologies. You can think of PLC technology as a small industrial computer that is very specialized in reliability in the factory environment. At its core, PLC monitors digital and analog sensors and switches (inputs), learns its control system, performs mathematical calculations and consequently controls various hardware (output) such as valves, lights, relays, servo motors , etc. time frame in milliseconds. Latest trends in industrial automation Recent industry automation trends include increased data usage, increased use of PLCs, PACs, and increased cloud-ba...

  What Does Intrinsic Safety (IS) Mean? Intrinsic safety is an explosion prevention technique used to ensure safe operation of electrical equipment in a hazardous area. It uses low-energy signaling technique by limiting the energy within the equipment well below the energy required to initiate an explosion. The equipment and control circuits can still operate with low currents and voltages that are adequate for its operation. How does Intrinsic Safety Equipment work? Avoiding ignition entails minimizing both the available power and the maximum temperatures. Defining the maximum level of available power is complex, but in general terms can be considered as meaning voltage less than 29V and under 300 mA. A simpler view is to say that power must be less than 1.3 W. (Note that much instrumentation requires 24V and can often be designed to draw less than 500 mA; sufficient to meet IS certification in many situations).     Six classes define temperature levels. I...