3500/32-01-01

3500/32-01-01   3500/32-01-01

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[关键词] 分散控制系统(DCS)可编程序控制器(PLC)安全仪表系统(SIS)MOTOROLA MVME 工业用模组   压缩机组控制系统(CCS)ESD系统;振动监测系统卡件

         阳工 1  7 7 8 6 0 3 2 5 1 6    +2 1 7 7 4 9 6 9 4 6

【3500/42M】   【3500/42M】
  PLC的应用领域非常广泛,在钢铁、石油、化工、电力等各个行业都可以看到PLC的应用,PLC即可以进行开关量的逻辑控制
又可以进行模拟量的控制,只需要配备相应的IO模块和配套装置即可。
我们还销售:本特利 监测系统
            AB PLC模块
            ABB  DCS系统
            西屋OVATION系统
            施耐德 140系列
            GE 通用电气等品牌中:
       PLC模块,DCS模块,CPU模块,IO模块,DO模块,AI模块,DI模块,网络通信模块,以太网模块,运动控制模块,

模拟量输入模块,模拟量输出模块,数字输入模块,数字输出模块,冗余模块,电源模块,继电器输出模块,继电器输入模块,

处理器模块。
 

 武汉夏通不论是销售全新备件,还是停产备件,致力于以{zd1}成本,{zy}质高效的方式让企业恢复正常运作。

、延迟输入法
    IN—输入
    OUT—输出
    TIME(ET)—延时时间
    TON—延时输出(其曲线如下图)
  注释:当输入IN=1时,启动计数器直到计时时间(PT)=延时时间,OUT=1。当计数器计时时间〈延时时间,OUT=0。延时时间{zh0}取1S以内。
  优点:xx了短时的周期干扰。
  缺点:响应速度慢,不利于信号的快速传输。
  二、减少模拟量输入扰动的方法
  1、限幅法
    MOVE—移动保持指令(使能端EN=1,OUT=IN。EN=0,OUT保持前次值)
    GE—大于等于指令(OUT=1,IF IN1≥IN2)
    LE—小于等于指令(OUT=1,IF IN1≤IN2)
    HL—上限设定值
    LL—下限设定值
  注释:当模拟量输入信号在HL和LL之间时,OUT=IN。当IN-AI信号超出或等于HL或LL时,GE或LE判断IN-AI信号,使OUT1或OUT2输出“1”去封MOVE,从而保持MOVE的输出为HL或LL的设定值。也就起到了限幅的作用。
  优点:能有效克服因偶然因素引起的脉冲干扰。
  缺点:平滑度差。
  2、延迟滤波限幅法
    MOVE—移动保持指令(使能端EN=1,OUT=IN。EN=0,OUT保持前次值)
    GE—大于等于指令(OUT=1,IF IN1≥IN2)
    LE—小于等于指令(OUT=1,IF IN1≤IN2)
    HL—上限设定值
    LL—下限设定值
    LG—延迟滤波指令(其曲线如下图)
    TIME—延迟滤波时间
  注释:功能基本和限幅法相同,只是在输入端增加了一个延迟滤波器,对输入信号起到了延迟缓冲的滤波。
  优点:有效地抑制了周期性的脉冲干扰。平滑度比限幅法有所改善。
  缺点:信号响应速度减缓。
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