Rancang Bangun Trainer PLC Omron CP1E sebagai Sarana Praktikum di STT Texmaco
Keywords:
Programmable Logic Controller (PLC), Omron CP1E NA20DR-A, trainer PLC, otomasi industri, Ladder Diagram, Analog to Digital Converter (ADC), Pulse Width Modulation (PWM), motor DC PG28Abstract
The advancement of industrial automation technology has increased the demand for learning media capable of enhancing students' knowledge and practical skills in understanding and operating Programmable Logic Controller (PLC)-based control systems. However, PLC laboratory activities at STT Texmaco are still constrained by the limited availability of practical training media that integrate digital input, analog input, and actuator control within a single system. Therefore, this study aims to design, develop, and evaluate an Omron CP1E NA20DR-A PLC trainer as a practical learning medium for digital and analog control systems in the Industrial Automation course.
The research methodology consisted of a literature review, hardware and software design, trainer assembly, program development using CX-Programmer with the Ladder Diagram programming language, and functional testing of each module. The trainer employs an Omron CP1E NA20DR-A PLC as the main controller, with push buttons and a potentiometer serving as input devices. The output devices include indicator lamps, a buzzer, and a PG28 DC motor controlled through an L298N motor driver using the Pulse Width Modulation (PWM) method. In addition, the trainer incorporates an Analog-to-Digital Converter (ADC) feature to convert analog signals from the potentiometer into digital data that can be processed by the PLC.
The testing results demonstrate that all input and output modules operated in accordance with the designed program. Basic PLC functions, including logic operations, timers, counters, analog signal acquisition through the ADC, and DC motor speed control using PWM, were successfully implemented and performed reliably. Based on these findings, the Omron CP1E NA20DR-A PLC trainer is considered suitable as a practical learning medium because it supports a more interactive and application-oriented learning process while meeting the instructional requirements of industrial automation courses at STT Texmaco.
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