contactor control system meaning in English

触点控制系统

Relay control system , or contactor control system , is one of the firstly used control systems . it has been applied in many fields now , due to its reliable control and simple devices
继电控制系统是最早采用的控制系统之一,其控制动作可靠、控制装置比较简单,在各种场合中得到了广泛应用。
Abstract : this paper introduces the unavoidable disadvantages of the the marine cargo crane ' s relay - contactor control system and the utilizing of the programmable logic controller （ plc ） and frequency conversion control technology for the marine cargo crane , and describes the main features of the marine cargo crane ' s frequency conversion control system with programmable logic controller such as energy economization and reliable protection
文摘:介绍了传统的船用起货机继电器?接触器控制系统及其存在的问题和可编程控器及交流变频控制技术在船用起货机上的应用，描述船用起货机plc变频控制系统的主要特性，如节能和可靠性保护。