5X00062G01 Emerson 后备系统

FOXBORO FBM207B
WESTINGHOUSE 1C31194G01
A-B 1747-L541
A-B 1747-L541
HMS AB7006-B
FOXBORO FBM231
FOXBORO FBM231
A-B 1747-L542
yokogawa AAI543-H00
YOKOGAWA AAI543-H00
RELIANCE 57C404B
TR ZE65M 171-50124
SIEMENS 6SC6120-0FE01
A-B 1747-L542
A-B 1747-L543

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Description

冗余设计可采用热后备或冷后备方式。热后备方式操作时,冗余的后备系统也同时运行,两者输出的结果一致时,表示系统是正常运行的;一旦结果不一致,则发出警报信号,同时,根据自诊断的结果,切换到正常的系统去。冷后备方式操作时,冷后备系统不运行,

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