http://repository.president.ac.id/xmlui/handle/123456789/13390 Mon, 06 Apr 2026 09:10:45 GMT 2026-04-06T09:10:45Z http://repository.president.ac.id/xmlui/handle/123456789/13392 THE IMPLEMENTATION OF THE PLC-BASED INTERLOCK SYSTEM ON THE DOBBY CRACK PRESS MACHINE USED FOR OUTFLOW AT PT XYZ Oemar, Dhestyana In the manufacturing sector, the reliability of control systems is crucial to improving product quality as well as reducing the number of items that do not meet standards. This final project outlines the implementation of an Interlock System program utilizing a Programmable Logic Controller (PLC) as a replacement for the conventional relay system. The main objective of this research is to improve product quality and analyze the various types of defects that often appear in the production process. The method applied includes implementing and testing a PLC-based Interlock System on the production line. To support the analysis of the causes of product defects, this research also applies the Fishbone Diagram approach combined with the 5 Whys method. The Fishbone Diagram serves to identify and categorize various factors that can cause products to fail, such as human factors, machines, methods, and materials. This approach is expected to provide a deeper insight into the causes of defects. The results showed that the use of this system succeeded in reducing the rate of failed products by 13%, resulting in a significant improvement in product quality. In addition, from the results of defect data analysis, the types of defects that most frequently cause product failure were found, which can be the basis for further improvements in the production process. With these achievements, this research proves that the use of PLC in Interlock systems can replace conventional relay systems more efficiently, increase productivity, and provide deeper insight into the main causes of product defects through a structured analysis approach using Fishbone Diagram and 5 Whys. Wed, 01 Jan 2025 00:00:00 GMT http://repository.president.ac.id/xmlui/handle/123456789/13392 2025-01-01T00:00:00Z http://repository.president.ac.id/xmlui/handle/123456789/13391 RANCANG BANGUN PROTOTIPE SISTEM SOLAR TRACKING HIBRID BERDASARKAN PERGERAKAN МАТАНARI DAN PERUBAHAN WAKTU Pratama, Indra Yoga Sistem Energi surya merupakan salah satu sumber energi terbarukan yang paling potensial untuk dikembangkan di Indonesia, mengingat letak geografis yang berada di garis khatulistiwa dengan intensitas cahaya matahari yang tinggi sepanjang tahun. Namun demikian, sistem panel surya konvensional dengan posisi tetap (fixed) memiliki keterbatasan dalam menangkap energi matahari secara optimal karena sudut datang cahaya berubah-ubah seiring waktu. Untuk mengatasi hal tersebut, penelitian ini merancang dan mengimplementasikan sistem solar tracking hybrid dua sumbu yang dapat beroperasi dalam mode otomatis maupun manual berdasarkan pergerakan matahari dan perubahan waktu. Perancangan sistem ini menggunakan sensor LDR untuk mendeteksi intensitas cahaya dan dikendalikan oleh mikrokontroler Arduino yang mengatur posisi vertikal dan horizontal panel surya melalui dua buah servo motor. Penelitian ini juga melakukan pengujian terhadap tiga mode operasi, yaitu mode Auto, Manual, dan Fixed, pada kondisi cuaca cerah dan mendung dalam hari yang sama. Hasil pengujian menunjukkan bahwa sistem solar tracking hybrid mampu meningkatkan daya yang dihasilkan panel surya secara signifikan. Nilai Relative Performance Index (RPI) pada mode Auto dan Manual mencapai rata-rata 76,59%, sedangkan pada mode Fixed hanya 60,11%, sehingga terdapat selisih efisiensi sekitar 16,48%. Temuan ini membuktikan bahwa sistem pelacakan arah matahari dua sumbu mampu memaksimalkan penyerapan energi surya sepanjang hari, terutama pada pagi dan sore hari ketika sudut datang matahari menyamping. Dengan efisiensi dan fleksibilitas yang ditawarkan, sistem ini diharapkan dapat menjadi solusi yang aplikatif dalam optimalisasi penggunaan panel surya. Wed, 01 Jan 2025 00:00:00 GMT http://repository.president.ac.id/xmlui/handle/123456789/13391 2025-01-01T00:00:00Z