Sistema de monitoreo en línea de las variables de control: ultrasonido, temperatura, aire y caudal de agua de los motores DC del tren acabador del proceso de laminación en caliente en acerías nacionales del Ecuador.

Abstract

ANDEC is a company that makes steel rods for construction remains one of the most important in the country. The rolling area is responsible for developing the final product reaches the distributors being, for this reason, a process vital to the company. Having no monitoring his finisher train is vulnerable to unscheduled shutdowns, which hurt production and is not satisfied with delivery expected tonnage. This thesis topic is based on the monitoring of the state of the engines of said area. The most common failures in these engines are high vibration due to the poor condition of the bearings and this in turn leads to an increase in temperature by a possible break in the cage or loss of lubrication. They can also be produced by lack of refrigeration in the heat exchanger engine by low or no water pressure. Programming for this research was conducted in a S7-300 PLC which uses sensors such as PT100 and ultrasound, to have behavioral trends of temperature and vibration, respectively, of the bearings; the pressure sensor to the output of the heat exchanger pipe to check the water pressure required for operation, are processed interacting with a SCADA online show where these parameters so friendly to be viewed by the staff and plant operators. The software used was Step7 V5.5 in which the lines of programming made and WinCC explorer which served to make the SCADA. The communication between Hardware and software was made in Ethernet network. This work was designed to have real and instantaneous values that serve to diagnose the state of the engines.