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All Journal Jurnal Instrumentasi dan Teknologi Informasi (JITI)
Paul Michael Siahaan
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Computer Science & IT Electrical & Electronics Engineering Energy Engineering

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Modifikasi Sistem Kontrol Heater Dengan Display Thermocontrol dan Sensor Thermocouple Pada Mesin Cutting Wind Up ITL.01.TL.01 Choirunnisa, Anis; Dharmanto; Wahyu Pebriansyah Asmara; Paul Michael Siahaan; Aliifah, Naila Zulfa
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 6 No. 2 (2025): Mei
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

PT. XYZ, a motorcycle tire factory, encountered a malfunction in the ITL.01.TL.01 cutting machine due to an overheating heating system. This research aims to modify the heating system on the ITL.01.TL.01 machine used for cutting inner liners. Manual cutting caused variations in inner liner length (73-78 meters), impacting production efficiency and consistency. The improvement method involved modifying the heater control system. Data were obtained through direct observation and analyzed using descriptive statistics. The modification, including the addition of a thermocouple sensor for real-time temperature monitoring, improved accuracy and efficiency in temperature control. Power calculations showed that the modified system operated with better energy efficiency. Paired T-test analysis indicated a significant performance improvement after the modification. These modifications allowed the cutting machine to operate, reducing material length variation and increasing overallefficiency.
Rancang Bangun Sistem Kontrol Solenoid Valve dan HMI pada Auto Blowdown Berbasis PLC Paul Michael Siahaan; Ahmad Zohari; Finnan Erlandung
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 2 (2026): Mei
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Abstract

One of the main challenges faced by PT QPR is product failure in the form of under-cured tires during the curing process due to pressure shaping drop. The number of under cure scrap occurring on the TTC 16 curing machine in March 2025 was 9 pieces, which has been analyzed to be caused by the water content in the steam. Therefore, the design and construction of this automatic blowdown system are carried out with the aim of reducing the water content in the steam to decrease undercure scrap and maintain the quality of tire products. The design and development carried out include the addition of a pilot acting solenoid valve integrated with the Mitsubishi Q- Series PLC as an automatic control system, as well as the addition of a button on the Mitsubishi GOT2000 HMI for manual control. The results of the research conducted show that the control system on the automatic blowdown system can operate both automatically and manually effectively. The reduction in the number of under-cure scrap on the TTC 16 machine also occurred after the design and construction of the automatic blowdown system, amounting to 6 pieces over a period of 28 days.
Co-Authors Ahmad Zohari Aliifah, Naila Zulfa Choirunnisa, Anis Dharmanto Finnan Erlandung Wahyu Pebriansyah Asmara