Description
增加一个环节也就意味着增加了故障发生的可能。信阳一期、益阳一期的DCS是由Bailey公司提供的INFI-90系统，针对其系统结构采用了公用环，公用系统的控制全部通过公用环配置来实现。2套DCS通过Tagnumber来实现控制，这样较好地解决了耦合问题。这种控制方式的优点是配置较少，外部设备也不用增加，有效地利用了信息资源；缺点是公用环的设备不能停电检修，除非2台机组均停机检修，加重了设备运行安全性的要求。
ASCO RED HAT FUEL RATED GENERAL PURPOSE VALVE 120 VOLT
Sqaure D Telemecanique NON Reversing Starter
RED LION CONTROL MODEL 680 ANALOG COUNTER
RED LION RPGC0041 ROTARY PULSE GENERATOR
CUTLER HAMMER 1357A-6513 55 SERIES PHOTOELEC 0592－5580708
NORGREN 12″ STROKE STAINLESS AIR CYLINDER RLF12A-DAN-AA
SQUARE D COMPACT ENCLOSED LIMIT SWITCH 9007MS09S0102
UNITED ELECTRIC PRESSURE DIFFERENTIAL SWITCH J21K S127B
SQUARE D LUG IN LUG OUT CIRCUIT BREAKER 30 AMP 480 V
THERMON HEAT TRACE SPLICE KIT MOD ECA-1-SR
ALLEN BRADLEY SIZE 0 ENCLOSED STARTER 120 VOLT COIL
CUTLER HAMMER VARIABLE DEPTH ROTARY SWITCH 12 INCH SHA
CUTLER HAMMER FREEDOM SERIES STARTER SIZE 00 AN16ANO 12
