Introduction to scada software pdf

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Dry: A Memoir Augusten Burroughs. Related Audiobooks Free with a 30 day trial from Scribd. Overall functions 4 5. SCADA refers to a system that collects data from various sensors at a factory, plant or in other remote locations and then sends this data to a central computer which then manages and controls the data. SCADA systems are used not only in industrial processes: e. A collection of equipment that will provide an operator at remote location with enough information to determine the status of a particular piece of a equipment or entire substation and cause actions to take place regarding the equipment or network.

Why : To gather Information as here voltage, current, frequency, power, circuit breaker status and To perform online actions. SCADA systems are used to monitor or to control chemical or transport processes in municipal water supply systems, to control electric power generation, transmission and distribution, gas and oil pipelines, and other distributed processes. The user interface or the man machine interface MMI provides various options of data presentation according to specific application and user needs.

Image courtesy : sielcosistemi. The central system usually monitors data from various sensors that are either in close proximity or off site. Contemporary SCADA systems exhibit predominantly open-loop control characteristics and utilize predominantly long distance communications, although some elements of closed-loop control. They have similar functions to SCADA systems, but the field data gathering or control units are usually located within a more confined area.

Communications may be via a local area network LAN , and will normally be reliable and high speed. A DCS system usually employs significant amounts of closed loop control. SCADA systems on the other hand generally cover larger geographic areas, and rely on a variety of communications systems that are normally less reliable than a LAN.

Closed loop control in this situation is less desirable. SCADA systems are used for controlling and monitoring chemical or transport processes and can be used in a factory environment such as electric power generation, water supply systems, gas and oil pipelines or any other distributed processes.

SCADA system is normally used to monitor and control a remote site or a distribution that is spread out for a long distance.