Part V: System Safety

An industrial safety system is used to protect humans, the manufacturing/processing plant, and the environment in case the process goes beyond safe control margins. As the name suggests, these systems are not intended for controlling the process itself but rather protection. In addition to...
March 02, 2012 - 2:00pm EST

Part IV: Applications of PLCs & PACs

Programmable logic controllers (PLCs) are digital computers / control systems that are designed to be extremely reliable and to handle the stresses of harsh industrial environments. Their more-sophisticated cousins – programmable automation controllers (PACs) – combine the features and capabilities...
March 01, 2012 - 2:00pm EST

Part III: Time-Driven Versus Event-Driven Control

The inputs and outputs to and from a controller may be a function of time (or time-driven), which means that the control flow is driven by a clock; or things may be controlled by events (event-driven), which means that the control flow is determined by events, such as a sensor triggering or a user...
February 29, 2012 - 2:00pm EST

Part II: Control System Feedback Loops

A control system has one or more inputs from external sources and one or more outputs driving external loads. The controller may also use one or more feedback loops, which refers to sampling the outputs from the downstream process and feeding these sampled values back as additional inputs into the...
February 28, 2012 - 2:00pm EST

Intro: Basics of Industrial Control Processing

In its most general sense, a control system is a device that is used to manage, command, direct, or regulate the behavior of other devices, processes, or systems. Industrial control systems are used in the manufacturing and production of products and the control of processing plants. Our expert...
February 27, 2012 - 2:00pm EST


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