Title :
Offline 1774 PLC reliability case study
Author_Institution :
Aluminum Co. of America, Newburgh, IN, USA
Abstract :
A reliability study was made of a 1774 PLC used in an ingot plant´s offline area to monitor and control material handling from the hot mill scalpers as well as the finishing-to-ingot-scrap-chip system. The study was prompted by a series of rampant failures. The author discusses the factors that led to the problems as well as the decisions resulting from the data analysis. Also included are information and field data provided by the manufacturer.<>
Keywords :
failure analysis; materials handling; metallurgical industries; programmable controllers; reliability; 1774 PLC; finishing-to-ingot-scrap-chip system; hot mill scalpers; ingot plant; material handling; offline area; reliability study; Aluminum; Computer aided software engineering; Costs; Job shop scheduling; Manufacturing; Metals industry; Milling machines; Preventive maintenance; Production; Programmable control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Houston, TX, USA
Print_ISBN :
0-7803-0635-X
DOI :
10.1109/IAS.1992.244211
