The light steel roll forming machine is a tool used in the manufacturing industry to continuously shape steel sheets into specific profiles. Efficiency and accuracy in production heavily depend on the control system employed. This article discusses the implementation of an automatic control system in a light steel roll forming machine, focusing on the use of sensors, actuators, and a microcontroller-based control system. Additionally, the system is equipped with a digital printing machine to directly print product branding and light steel specifications. The research results indicate that the application of an automatic control system enhances product precision, improves production efficiency, and reduces the defect rate.

Radio is a mass media that is still used by many people as a means of communication, such as listening to songs, informing news and others. One of the radio stations that still exists and is developing to this day is Radio Republik Indonesia, which is overseen by the government, which can now be accessed via available radio and websites so that it makes it easier for listeners to listen to and watch the news and can be accessed anywhere. The author conducted research at Radio Republik Indonesia in the Central Jakarta section using qualitative research methods where the author went directly to the field or observed and interviewed as well as assisting with literature studies. The aim of conducting this research was to find out how the broadcasting system and radio supporting equipment at Radio Republik Indonesia Jakarta . So the results obtained are in the form of a radio broadcasting system at Radio Republik Indonesia using two broadcasting systems, namely audio and visual as well as supporting equipment used in the form of Microphones, Mixers, OB – Van, MCR, Transmitter, STL and Antenna.

Centa Brasindo Abadi (CBA) is a company operating in the agricultural sector. To maintain and increase productivity, maintenance of production machines is required. Preventive Maintenance (PM) is an approach used in maintaining equipment and machines to prevent unwanted damage or failure. A sachet filling machine is a machine for packaging products that will be distributed in sachet packaging according to the predetermined product weight. Preventive maintenance helps identify potential problems, saves on costly repairs, and keeps equipment in optimal operational condition. The aim of this research is to determine the implementation of preventive maintenance to maintain productivity in an effort to reduce downtime.

Electrical energy continues to grow over time, power plants with large capacities are the main sources of electricity in Indonesia, one of which is the Steam Power Plant (PLTU). In the field of power plants that use coal always need air during the electricity production process. This study aims 1) to determine the protection management system on the Forced Draft fan motor using GE Multilin 269 Plus, 2) Setting GE Multilin 269 Plus as protection, 3) The results of the protection in the form of Normal Motor, Alarm, and Trip conditions in the accumulation of imbalance (Unbalance) ). The method used is a quantitative research method based on analysis, taking data and then analyzing the data obtained. The results of this quantitative study regarding the Unbalance value or imbalance of the electric motor analyzed resulted in a value of 5.8% for normal conditions, 10.86% for alarm conditions on multilin and 15.50% in trip conditions or the motor had stopped. These values ​​are obtained from the results of calculations comparing negative sequence currents and positive sequence currents (In/Ip). The conclusion obtained is that the GE Multilin 269 Plus protects the electric motor from system damage by using a current sensor and through a setting point that is adjusted to the provisions of NEMA (National Electrical Manufacturers Association) with an unbalance value of more than 15% for trips, more than 10% for alarm conditions and less than 10% under normal conditions

Outdoor Digital Printing Machine is a printing machine or digital printing machine whose printouts are intended for outdoors and are weather-resistant, both hot, sunlight and rain. Outdoor machines use a special type of ink, namely solvent ink. The principle of the outdoor machine itself is to print the design results that were previously in the computer. To drive an outdoor machine requires expertise and understanding in its use and there is a mode of acceleration of the printing process on an outdoor machine whose acceleration of the printing process is not yet known, where the acceleration of the printing process can affect consumer satisfaction. This study aims to 1) Knowing about Digital Print Tools as well as. 2) Knowing the use of Outdoor Digital Printing Machines. 3) Knowing the print speed of the outdoor machine. 4) Knowing the percentage of customer satisfaction. The research method used is the R&D method. By using the R&D method, the results obtained to determine the speed of the outdoor engine on the printhead motor with LOW mode have a speed of 124 m/s, MIDELL mode has a speed of 161 m/s, while HIIGH mode has a speed of 241 m/s. s. The results obtained to determine consumer satisfaction with the speed of the print rate through the time of using the machine using the Guttman scale, namely the overall process time of the outdoor digital printing printing machine on customer satisfaction has a conformity, which is indicated by the percentage of answers "Yes" an average of 75%.