Thursday, September 29, 2016

PLC and DCS Collaboration in Alarming Situation




PLC and DCS Collaboration in Alarming Situation product is the response of the needs for continuous alarm information reporting. There are several many possible method to conduct. Among various approaches that could provide an alarm-reporting system for industries, the use of PLC in collaboration with DCS becomes a brilliant solution looked from many cases. That is right that PC hardware is another possible way and could be a part of all of the system.

Through the PLC and DCS Collaboration in Alarming Situation hardware, the alarms transmitted via a wireless link or local network. However, the PLC and CS collaboration in alarming situation is the alternative we want to discuss. The main reason of using PLC hardware and firmware is generally simpler and more robust than the hardware and software comes with PCs.

PLC and DCS Collaboration


PLC hardware and firmware provides a more durable and robust than based on the PC’s hardware and operating system


Case of the PLC and DCS Collaboration in Alarming Situation study conducted by Kris Willoughby for an alarming situation in the landfill for storing regulated waste published in ISA. The waste includes soil and liquids. What we can draw for the case of the study tells us simply that PLC hardware and firmware provides a more durable and robust than based on the PC’s hardware and operating system. The system designed to report alarm conditions such as sump overflows, abnormal temperatures and pump failures. The remote station PLC obtained with several outputs wired to the existing DCS system.


Implementing PLC and DCS Collaboration in Alarming Situation into the Facility


The study conducted in the new facility was incorporating PLC and DCS Collaboration in Alarming Situation in one integrated mechanism. In order to gain proper alarm reporting capability, the installed was the PLCs in the administration/operation trailer (AOT) linked using a fiber optic Ethernet to the ponds landfill and decon building PLCs. The PLC also linked to a control room inside the INTEC (Idaho Nuclear Technology Engineering Complex) using a set of modems and one dedicated telephone connection. The telephone connection consists of two twisted pairs of copper wire. They continuously transmitted signal carriers to each other and no dialup required.

In the PLC and DCS Collaboration in Alarming Situation, DCS connected to the PLCs using 4-wired contacts remote station PLC. The DCS located inside INTEC. Reported that DCS comes from different manufacturers opposite to the PLC that come from one manufacturer. The PLC and DCS Collaboration in Alarming Situation strategy picked up because the lack of compatibility of the ready-serve DCS that could be directly linked and compatible to the PLCs. The PLC and DCS Collaboration in Alarming Situation in the existing control room outputs audible and visual notification to operators in the moment of a loss of communication or alarm window activation. The reported alarm based on the level window: level alarms in the first alarm window, flow alarms in the second window and signal failures as well as network failures to the third alarm window.


Conclusion


To report an alarming situation, PLC and DCS Collaboration in Alarming Situation in the landfill facility can provide accurate alarm reporting. There is two-installed PLC, in the AOT building and in the ponds. The Distributed Control System (DCS) further integrated to the PLC that capable to serve the information inputted audio or visually. The collaboration between PLC and DCS hardware and software significantly reduce the cost operation as well as increase the longevity to the overall system compared to the PC based hardware and operating system.


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