A cable car is a hanging car that runs by cable. Cable car carrier controlled by DC motor. The cable car can be a solution to accommodate the mobilization of agricultural commodities in areas that are difficult to access while still paying attention to safety and reliability. In this research, the speed of a cable car would be automatically controlled with Programmable Logic Control (PLC). PLC functions as a cable car operation controller by considering 3 parameters, namely: wind speed, maximum load weight, and distance (meters). The speed of the cable car is controlled by the PLC using fuzzy logic. Cable car speed is based on parameters of wind speed, load weight and distance. From the results obtained, the PLC has worked well in regulating the speed of the cable car and if any parameter exceeds the PLC limit, it can turn off the cable car.
In the topology of the DC traction substation there is a rectifier component which generally uses a 12 pulse rectifier type and the load is in the form of a trainset with a component in the form of a converter used for variable speed drives (VSD). The operation of the rectifier and the VSD converter load causes harmonics to appear on the AC input side, so anticipation needs to be done. Therefore, it is necessary to conduct an assessment related to DC traction substations to obtain good electrical power quality. The purpose of this study was to determine the electric power quality parameters of DC railway traction using a 12 pulse rectifier and a VSD converter load. This research was conducted by simulating a DC railway traction model with a 12 pulse rectifier and knowing the comparison of the system power quality between the VSD converter load and the resistive load as the basic reference for the traction substation work system of this model. System modeling is done using PSIM software. The results of the simulation are the parameters of the stability of the voltage, current, and system harmonics.
Penelitian ini penulis melakukan penelitian tentang pembuatan desain kontrol sistem pencucian kereta dan gerbong berbasis relay dan PLC. Metode yang digunakan meliputi perencanaan, study literatur dengan berbagai refrensi keelektronikaan yang berkaitan dengan alat ini, analisis kebutuhan komponen-komponenyang akan digunakan dalam pembuatan dan pengujian dalam mengimplementasikanya. Tujuan dilakukannya penelitian ini adalah untuk menciptakan kontrol sistem pencucian kereta dan gerbong berbasis relay dan PLC secara manual dan otomatis dengan kelebihan lebih efisien waktu dalam pencucian, lebih sedikit pekerja yang diperlukan dan juga dalam penggunaan sabun dan air yang lebih efisien dan terukur. Perancangan sistem kontrol dengan menggunakan PLC dan relay sebagai otak dari sistem pencucian kereta dan gerbong ini serta dibantu oleh adanya 4 buah sensor ketinggian air sebagai pengukur ketinggian air dan urutan dari stepnya ialah semburan air,semburan sabun,putaran kain, air, putaran kain, angin dari kipas untuk tahap step terakhir sebagai pengering. Setelah dilakukan pengujian dan simulasi,maka didapatkan hasil kinerja yang optimal bahwa rancangan PLC Omron CPM1A 40cdr tersebut dapat menggerakkan fungsi fungsi kontrol sistem pencucian kereta dan gerbong
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