ABB UA C389 AE02C HIEE300888R0002
ABB UA C389 AE02C HIEE300888R0002 ABB UA C389 AE02C HIEE300888R0002
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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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