描述
IS200TVIBH2B
可靠性和可维护性
继电器控制使用大量的机械触点, 触点在开闭时会产生电弧, 造成损伤并伴有机械磨损, 使用寿命短, 运行可靠性差, 不易维护。而PLC采用微电子技术, 内部的开关动作均由无触点的半导体电路来完成。体积小, 寿命长, 可靠性高, 并且能够随时显示给操作人员, 及时监视控制程序的执行状况, 为现场调试和维护提供便利。
PLC控制与单片机控制的区别
(1) PLC是建立在单片机之上的产品,单片机是一种集成电路,两者不具有可比性。
(2) 单片机可以构成各种各样的应用系统,从微型、小型到中型、大型都可,PLC是单片机应用系统的一个特例。
(3) 不同厂家的PLC有相同的工作原理,类似的功能和指标,有一定的互换性,质量有保证,编程软件正朝标准化方向迈进。这正是PLC获得广泛应用的基础。而单片机应用系统则是八仙过海,各显神通,功能千差万别,质量参差不齐,学习、使用和维护都很困难。
最后,从工程的角度,谈谈PLC与单片机系统的选用:
(1) 对单项工程或重复数极少的项目,采用PLC方案是明智、快捷的途径,成功率高,可靠性好,手尾少,但成本较高。
(2)对于量大的配套项目,采用单片机系统具有成本低、效益高的优点,但这要有相当的研发力量和行业经验才能使系统稳定、可靠地运行。最好的方法是单片机系统嵌入PLC的功能。
产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。
主营DCS系统配件
机器人系统配件
大型伺服系统配件
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