PLC CONTROLLED STARTING ASYNCHRONOUS MOTORS WİTH REACTANCE COİL

Abstract

Programmable logic controllers (PLCs) are electronic systems that designed too perate inindustrial facilities and operate according to digital principles. These devices are designed tocontrol a system with it shown analog ordigital input/output modules, functions such aslogical control, timing and counting. In addition, PLCs can be used to collect data dependingon various processes in production. These data are measurable data such as temperature,ambient temperature, humidity and the like. In this study, starting condition of three phaseasynchronous motor controlled by PLC is investigated. Asynchronous motors draw about 3 to7 times their rated current during the starting time. This current value is harmful to thenetwork. Thus, this current value is reduced by connecting the reactance coil to the stator ofthe induction motors. The most commonly used motor type in the industry are asynchronousmotors. The fact that it has a simple structure that works with alternating current and alsorequires low maintenance has made them more preferred in the industry than other motortypes. PLCs are devices that can control the execution of thework in a specific order. Forexample; It can be used in the systems where the floors will be controlled in which order theelevators will be in which order. PLCs are long lasting and reliable. They can work safely industy, dirty, humid, electrically noisy environments. PLCs are very small and space-savingdevices according to their capabilities. This allows the PLCs to be installed in anyenvironment without any problems. In addition to logic-based operations, PLCs also includecommands for performing mathematical operations. These features are one of the reasons thatmake PLCs superior. In order to be effective in today's world of competition, it is necessary touse automation systems with PLC intensively in the industry