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【简单介绍】
【详细说明】
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1 过程通道故障:过程通道故障出现zui多的是I/O卡故障。I/O卡故障一般的判断与处理:通过系统诊断,更换通道或通过更换备用件处理,至于其内部元件老化或是其他原因造成的损坏,一般控制人员不好判断。I/O卡的检修一般是由厂家处理,目前的热控检修人员的手段还不能达到像检修常规仪表那样检修。而且生产厂家的I/O卡件已制造成一体化的趋势,这样只能购买备件。好在这类故障只是在调试阶段出现较多,正常运行中出现几率很低。一次元件或控制设备出现故障有时不能直接被操作员发现,只有异常或报警后才通知热控人员处理。这样对检修人员和运行人员的素质要求就要提高,运行人员要详细介绍故障前后的状态便于热控检修人员能够快速、准确地处理缺陷,减少故障的扩大化,另外许多DCS厂家在产品宣传上都支持卡件热拨,做为控制人员,在运行中更换卡件时一定要做好安全防护措施否则会引起系统变化或负荷变化,尤其数字量卡件。
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吴工: :
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地址:厦门市思明区仙岳路582号嘉怡园16楼A单元
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A16B-1200-0170
A16B-1200-0201
A16B-1200-0210
A16B-1200-0220
A16B-1200-0230
A16B-1200-0310
A16B-1200-0350
A16B-1200-0360
A16B-1200-0410
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