论文部分内容阅读
一、概述根据生产工艺的要求,拟定了自动控制方案,由于煤码头运输机械控制多属于逻辑顺序的控制,故选用了具有运算功能的memocon—584的可编程序控制器(简称PLC)来实现控制功能和简单的管理功能。这种控制器的最大优点是编程简单,采用通用的继电器符号编程,编程人员无需学习程序语言,维护方便,可靠性高。为了满足生产工艺要求,对整个码头的运输机械进行集中控制,为此设置一个中央控制室(简称CCR)。CCR中的主要设备有可编程序控制器,操作台,继电器柜,模拟显示屏,工业电视,通讯设备等。在CCR中可对皮带传送线进行顺序起动顺序停机,紧急停车和联锁运转等集中控制。结合我国的具体国情,在装船机、堆料机、取料机、翻车机等单机上均设操作人员,CCR
First, an overview According to the requirements of the production process, developed an automatic control program, as the coal terminal transport machinery control are mostly logical sequence control, so the selection of a computing function memocon-584 programmable logic controller (PLC) to achieve Control functions and simple management functions. The biggest advantage of this controller is simple programming, the use of general-purpose relay symbol programming, programmers do not need to learn programming language, easy maintenance, high reliability. In order to meet the requirements of the production process, centralized control of the entire terminal transport machinery, for which a central control room (referred to as CCR). CCR in the main equipment programmable controllers, console, relay cabinet, analog display, industrial television, communications equipment. In the CCR, the belt conveyor can be sequentially controlled in order of stop, emergency stop and interlock operation. Combined with China’s specific national conditions, in the ship machine, stacking machine, reclaimer, car dumper and other stand-alone operator, CCR