Abstract
Nowdays, automation system become important aspect in manufacturing process because could make integration manufacturing process on it more effective and more efficient. PLC or Programmable Logic Controller is one kind of automation system. Many industries use PLC as automation control device in manufacturing process to control all kind of process. For example at transportation process of coals in generator industry. Coals could be burned because main elements of coals are carbon, hydrogen, and oxygen. Base on this prototype early warning system design, we get the result if sensor thermocouple detect temperature more large than setpoint temperature (it is 2000C), then PLC will give an order to shut down the output, that is belt conveyor. Result of this prototype design could used at coals transportation as an early warning system. Design of prototype early warning system could detect and prevent fire because of consequence of burned coals until spreading of fire could be avoided.Keywords: PLC Siemens S7-300, IC AD 595, Sensor Thermocouple KAbstrakPada masa sekarang ini, sistem otomasi menjadi aspek penting dalam proses manufakturing karena mampu mengintegrasikan proses manufaktur sehingga menjadi lebih efektif dan efisien. PLC atau Programmable Logic Controller merupakan salah satu jenis sistem otomasi. Banyak industri menggunakan PLC sebagai alat pengendali otomatis pada proses manufaktur untuk mengendalikan semua jenis proses. Sebagai contohnya adalah proses transportasi batubara pada industri pembangkit listrik. Batubara dapat dibakar karena elemen utamanya adalah karbon, hidrogen dan oksigen. Pada desain prototype early warning system, jika sensor thermocouple mendeteksi temperatur melebihi set poin yang ditentukan (200°C), maka PLC akan memberikan perintah untuk mematikan belt conveyor. Hasil dari prototype ini dapat digunakan pada sistem transportasi batubara sebagai early warning system. Desain dari prototype early warning system dapat mendeteksi dan mencegah kebakaran akibat terbakarnya batubara.Keywords: PLC Siemens S7-300, IC AD 595, Sensor Thermocouple K
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