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Normas ISA88 e ISA105 aplicadas à programação de PLCs
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Abstract(s)
Este trabalho visou essencialmente em compreender as normas ISA 88 e ISA 95 e seus impactos na programação do PLC.
A norma ISA 88 possui o papel de criar nomenclaturas e terminologias para criar divisões na fábrica, sejam com base nos aspetos físicos ou nos aspetos do processo de fabricação. Essa divisão possui o objetivo de facilitar o controlo da produção em batches. Essa divisão irá se refletir também no PLC de maneira que seja respeitada a hierarquia estabelecida.
A norma ISA 95 aborda a comunicação entre o PLC, SCADA/HMI, MES e ERP estabelecendo fronteiras de atuação e terminologias para as informações a serem trocadas. Pelo fato das camadas MES e ERP possuírem informações cruciais para a produção como, agendamento, quantidades de matéria-prima disponíveis, parâmetros de produção e quantidades a serem produzidas, é necessário que essas informações sejam enviadas ao PLC, de maneira que ele seja capaz de produzir. O PLC, por sua vez, será responsável por reportar todos consumos e eventos da produção, a fim de que os níveis superiores desempenhem seu papel.
No final deste trabalho, foi realizada um caso de estudo pratico onde aplicou-se as duas normas para a programação de um tanque de armazenamento para uma fábrica de lacticínios, onde a fabrica foi dividia seguindo, maioritariamente, a hierarquia física da norma ISA 88. O tanque era responsável por armazenar os produtos necessários e reportar a quantidade de matéria-prima utilizada.
This work essentially aimed at understanding the ISA 88 and ISA 95 standards and their impacts on the PLC programming. The ISA 88 standard has the role of creating nomenclatures and terminologies to establish divisions in the factory, whether based on physical aspects or aspects of the manufacturing process. This division has the objective of facilitating the control of production in batches. This division will also be reflected in the PLC so that the established hierarchy is respected. The ISA 95 standard addresses communication between the PLC, SCADA/HMI, MES and ERP, establishing boundaries of action and terminology for the information to be exchanged. Because the MES and ERP layers have crucial information for production, such as scheduling, quantities of raw material available, production parameters and quantities to be produced, it is necessary that this information be sent to the PLC, so it has all parameters necessary to start production. The PLC, in turn, will be responsible for reporting all consumption and production events, so that the higher levels have all the information to do their functions. At the end of this work, a practical case study was carried out where the two standards were applied for the programming of a storage tank for a dairy factory, where the factory was divided, mostly by the physical hierarchy of the ISA 88 standard. The tank was responsible for storing the necessary products and reporting the amount of raw material used.
This work essentially aimed at understanding the ISA 88 and ISA 95 standards and their impacts on the PLC programming. The ISA 88 standard has the role of creating nomenclatures and terminologies to establish divisions in the factory, whether based on physical aspects or aspects of the manufacturing process. This division has the objective of facilitating the control of production in batches. This division will also be reflected in the PLC so that the established hierarchy is respected. The ISA 95 standard addresses communication between the PLC, SCADA/HMI, MES and ERP, establishing boundaries of action and terminology for the information to be exchanged. Because the MES and ERP layers have crucial information for production, such as scheduling, quantities of raw material available, production parameters and quantities to be produced, it is necessary that this information be sent to the PLC, so it has all parameters necessary to start production. The PLC, in turn, will be responsible for reporting all consumption and production events, so that the higher levels have all the information to do their functions. At the end of this work, a practical case study was carried out where the two standards were applied for the programming of a storage tank for a dairy factory, where the factory was divided, mostly by the physical hierarchy of the ISA 88 standard. The tank was responsible for storing the necessary products and reporting the amount of raw material used.
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Keywords
Automação industrial alimentícia Norma ISA 88 Norma ISA 95 Programmable logic controller