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All Journal Didaktik : Jurnal Ilmiah PGSD STKIP Subang
Zahrul Ulum
Universitas Alwashliyah
Education

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PERANCANGAN DAN IMPLEMENTASI PROGRAM KENDALI OTOMATIS PADA SISTEM PENGEPAKAN BUAH MENGGUNAKAN PLC Zahrul Ulum; Tunggul Parningotan Hutapea; Awaluddin Sitorus; Aliman
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 02 (2026): Volume 12 No. 2, Juni 2026 Public
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i02.15224

Abstract

This study aims to design and implement an automatic control program for a fruit packaging system using a Programmable Logic Controller (PLC) to improve efficiency, accuracy, and consistency in the packaging process. Manual fruit packaging often results in several problems, including inconsistent product quantities, longer processing times, and a higher risk of human error. These issues can reduce productivity and affect the quality of packaged products. The research employed an engineering research method with an experimental approach consisting of system design, ladder diagram programming, prototype development, and system testing. The main controller used was an Omron CP1E-E30SDR-A PLC programmed using CX-Programmer version 9.7 software. The system was designed with switches acting as simulated sensors and indicator lamps serving as simulated actuators. The operational sequence begins with empty carton detection, followed by fruit filling until the predetermined quantity is reached, automatic conveyor stopping, and automatic carton replacement without operator intervention. Furthermore, a buzzer was incorporated as a warning indicator for abnormal conditions such as carton unavailability, fruit shortages, or carton accumulation. The testing results demonstrated that the system operated according to the designed control logic, achieved high accuracy in fruit counting, and effectively controlled the carton replacement process automatically. Therefore, the PLC-based automatic control system can improve the effectiveness, efficiency, and reliability of fruit packaging operations and has strong potential for implementation in larger industrial applications.
PENGUKURAN KINERJA PEMBANGKIT LISTRIK TENAGA BIOGAS BERBASIS LIMBAH CAIR PABRIK KELAPA SAWIT Kiki Utama Putra; Zahrul Ulum; Aminah Asmara Dewi
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 03 (2026): Volume 12 No. 03, September 2026 Published
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i03.17987

Abstract

Abstract. A crucial indicator of biogas power plant performance is the quality of the biogas entering the gas engine. Poor-quality biogas causes issues such as startup failures, corrosion of intercooler fins, and scoring of pistons and cylinders, in addition to reducing oil lifespan. Therefore, this study aims to detect performance degradation in the biogas power plant by measuring its operational performance using Key Performance Indicators (KPIs). The performance measurement process revealed declines in specific areas, namely the digestion KPIs regarding inlet pH and inlet temperature; this was attributed to the absence of a cooling pond system and a mixing pit at the plant. Regarding biogas condition KPIs, H2S and O2 levels were found to be suboptimal. However, gas engine consumption metrics were within acceptable limits, with consumption below 2 kWh/m³ and a Capacity Factor (CF) of 45%. Based on these measurements, optimization of the biogas system is required, as H2S and O2 levels did not meet KPI standards. The study concludes that KPIs can serve as a valuable reference for assessing and integrating the performance of biogas power plants.
Co-Authors Aliman Aminah Asmara Dewi Awaluddin Sitorus Kiki Utama Putra Tunggul Parningotan Hutapea