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Muchdar Patabo
Politeknik Negeri Manado
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Analisis Error Pembacaan Tegangan DC pada Kondisi Overvoltage dan Undervoltage Menggunakan Input Analog PLC Adhityo Samola; Arnold Kalalo; Fanny Doringin; Sukandar Sawidin; Muchdar Patabo; Maruto Loegimin
CYCLOTRON Vol 9 No 02 (2026): CYCLOTRON
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ct.v9i02.31380

Abstract

Voltage monitoring is an important aspect in electrical systems to maintain operational stability and prevent damage to electrical equipment. In systems based on Programmable Logic Controller (PLC), voltage measurement is carried out through an analog input module that converts analog signals into digital data, which is then processed using a scaling method to obtain the actual voltage value. This conversion process has the potential to produce errors due to the limitations of analog input resolution, noise, and measurement device tolerances. This study aims to analyze the error level of DC voltage readings using PLC analog input under overvoltage and undervoltage conditions. The method used is an experimental approach by comparing the reference voltage from an adjustable power supply with the PLC reading results at several voltage variations. The reference voltage is converted into an actual voltage scale using a linear approach, then analyzed using the percentage error method. The results show that the error value ranges from 0% to 1.38%, with an average value of approximately 0.96%, and the highest error occurs under overvoltage conditions. This indicates that the system has good accuracy with relatively small and stable error levels. Therefore, the PLC-based voltage monitoring system is feasible for voltage monitoring applications with an acceptable level of measurement error.
Design of Star Delta Control Circuit Work System on 3 Phase Electric Motor Muchdar Patabo; Hatanael Bijang; Dostenny Kantohe; Wellem Enoch; Jeriko Najoan; Heartyara Sibuea
Jurnal Impresi Indonesia Vol. 3 No. 5 (2024): Jurnal Impresi Indonesia
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jii.v3i5.4854

Abstract

Induction motors are one of the main components in the industrial world because they have several significant advantages. These advantages include a more economical price compared to other types of electric motors, relatively lighter weight, and simple construction that facilitates the maintenance process and reduces overall maintenance costs. The purpose of this research is to reduce the surge in electric current when the motor is started and increase energy efficiency. One method commonly applied in the use of induction motors is the star-delta configuration. This configuration is used primarily to save energy by reducing the energy consumption associated with high starting currents in induction motors. The star-delta method changes the motor winding connections from star to delta configuration when the motor reaches a certain speed, thereby reducing the starting current to one-third of what it would be under direct-on-line conditions. This greatly helps in reducing the stress on the power system, as well as increasing the operational life of the motor. The system has also proven to be compliant with industrial safety regulations. In this project, it can be concluded that the star delta circuit functions when pressing the star button, the motor will move slowly. Then when pressing the delta button, this circuit also has 3 buttons namely star, delta and off.
Co-Authors Adhityo Samola Arnold Kalalo Dostenny Kantohe Fanny Doringin Hatanael Bijang Heartyara Sibuea Jeriko Najoan Maruto Loegimin Sukandar Kandar Sawidin Wellem Enoch