描述
按下K2按钮,又使J0立刻得电吸合,由于J0常闭触点断开时刻前于J2吸合的动作时间,故使J1~J3的电源先断开,0.5秒后J0断开,又使3个继电器上端接通24V电源,由于此时K2仍处于按下状态,故使J2继电器得电吸合即自锁。即此过程是先使第一个调压器断电后,再使第二个调压器通电工作。
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据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
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