1746-OB16
发布时间:2017-6-6 11:36:25 字体:
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AB 1746-OB16
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PLC抗干扰硬件上应采取的措施
(1)犉帘危憾缘缭幢溲蛊鳌pu、编程器等主要部件,采用导电、导磁良好的材料进行屏蔽,以防外界干扰。牋牋牋牋牋牋牋? (2)犅瞬ǎ憾怨┑缦低臣笆淙胂呗凡捎枚嘀中问降穆瞬ǎ韵蛞种聘咂蹈扇牛蚕魅趿烁髦帜?橹涞南嗷ビ跋臁 牋牋牋牋牋牋牋
(3)电源调整与保护:对cpu这个核心部件所需的 5v电源,采用多级滤波,并用集成电压调整器进行调整,以适应交流电网的波动和过电压、欠电压的影响。牋牋牋牋牋牋牋? (4)牳衾耄涸赾pu与i/o电路间,采用光电隔离措施,有效隔离i/o间的电联系,减少故障误动作。牋牋牋牋牋牋牋 ? (5)采用模块式结构:这种结构有助于在故障情况下短时修复。因为一旦查处某一模块出现故障,就能迅速更换,使系统回复正常工作,也有助于加快查找故障原因。
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