Implantação de automação segura entre CLPs Siemens em conformidade com o padrão NR-12

Abstract

In industrial environments there are several risks to which workers are exposed due to factors such as the inadequate form of equipment construction, the absence of safety devices, unsafe means of access to equipment, among other factors that contribute to the work accident. The NR-12 - Safety at Work in Machinery and Equipment, thinking about these unsafe conditions, was reformulated in 2010 and with it new technical measures should be adopted with the objective of increasing the use by companies of more Safe to prevent risks and accidents at work. The suitability of machines and equipment to the NR-12 regulatory standard is closely linked to the automation of industrial processes, starting with extensive work involving engineering, safety of work, operation and maintenance. The purpose of this paper is to define which method of secure communication should be used in programming the Programmable Logic Controller (PLC) software of the "Transporte da Têmpera" equipment. Using Siemens' intrinsically safe Safety technology and the NR-12 standard, it is proposed to integrate a Single CPU and CPU safety in the industrial environment.