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All Journal Jurnal Instrumentasi dan Teknologi Informasi (JITI)
Dharmanto
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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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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.
Modifikasi Sistem Kontrol Motor Listrik Menggunakan Inverter dengan Distance Sensor Pada Alat Penggulung Side Gume. Susilawati, Dera; Dharmanto; Kahlil Firdausi, Muhammad; Aldisar Syarifudin, Ahmad
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 1 (2025): November
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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The high level of scrap in the bias cutting process at PT. ADM, particularly caused by ineffective side gume rolling, has impacted production efficiency. This final project aims to overcome this issue by modifying the side gume roller system on the DBC-03 machine. The original pneumatic motor was replaced with a three-phase induction motor, controlled by a PLC system integrated with a distance sensor and inverter to automatically adjust motor speed based on the diameter of the rolled material. The modification process included designing, assembling, and implementing the control system, followed by field testing. The results show that the new system significantly improves the roller's pulling strength, increases the rolling capacity, and enhances ease of operation. The distance sensor accurately detects changes in material diameter, and the inverter ensures stable speed control. Overall, the modified system has proven effective in reducing scrap, supporting continuous production, and providing a reliable solution for the bias cutting process in the tire manufacturing industry.
Rancang Bangun Sistem Control Otomatisasi dengan mengintegrasikan PLC Lasro P. Sihite; Dharmanto; Lala
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 2 (2026): Mei
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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The cyanide mixing process in the PT CBA reagent area was previously carried out manually, which was not only inefficient, but also required a long time for one mixing process and also increased occupational safety risks due to exposure to hazardous chemicals. This research aimed to design and build an automation system using an Allen-Bradley PLC and a Citect SCADA to replace this manual process. The system was developed using an ultrasonic sensor to measure liquid levels, with ladder diagram control logic on the PLC to regulate water filling, agitator activation, and valve operation automatically. Integration between the PLC and SCADA was carried out through the conversion of the DH+ protocol to Ethernet TCP/IP to enable real-time process monitoring and control from the HMI interface. Testing was carried out through program logic verification and interviews with 6 operators.
Rancang Bangun Alat Timbangan Digital dengan Load Cell Sensor M. Ridwan Arif Cahyono; Dharmanto; Rian Febrianto
Jurnal Instrumentasi dan Teknologi Informasi (JITI) Vol. 7 No. 2 (2026): Mei
Publisher : Prodi D3 Teknik Elektronika Politeknik Gajah Tunggal

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Workers in the rigid foam block weighing area at PT IIA are exposed to ergonomic risks due to repetitive manual tasks and non-ideal working postures. These conditions can lead to musculoskeletal complaints and increase the risk of Musculoskeletal Disorders (MSDs). This study aims to design and develop an ergonomic digital weighing device using a load cell sensor to reduce occupational risks and improve production process efficiency. Postural analysis using the Rapid Entire Body Assessment (REBA) method was conducted to evaluate ergonomic risks prior to equipment design. The weighing tool was designed based on workers' anthropometric dimensions and tested to ensure weight measurement accuracy through calibration and sensor linearity testing. The test results show an average error rate of only 0.024%, which falls within the acceptable tolerance limits of the sensor. Therefore, the digital weighing device is considered ergonomic, accurate, and feasible for use in the production process.
Co-Authors Aldisar Syarifudin, Ahmad Aliifah, Naila Zulfa Choirunnisa, Anis Kahlil Firdausi, Muhammad Lala Lasro P. Sihite M. Ridwan Arif Cahyono Paul Michael Siahaan Rian Febrianto Susilawati, Dera Wahyu Pebriansyah Asmara