品质保证 UFC721BE101 3BHE021889R0101 可编程DCS控制模块

品质保证 UFC721BE101 3BHE021889R0101 可编程DCS控制模块

1)模拟量输入(AI)回路调试。要仔细核对I0模块的地址分配;检查回路供电方式(内供电或外供电)是否与现场仪表相一致;用信号发生器在现场端对每个通道加入信号，通常取0、50%或100%三点进行检查。对有报警、联锁值的AI回路,还要在报警联锁值(如高报、低报和联锁点以及精度)进行检查,确认有关报警、联锁状态的正确性。

(2)模拟量输出(AO)回路调试。可根据回路控制的要求，用手动输出(即直接在控制系统中设定)的办法检查执行机构(如阀门开度等)，通常也取0、50%或100%三点进行检查;同时通过闭环控制,检查输出是否满足有关要求。

1) Analog input (AI) loop debugging. Carefully check the address assignment of I0 module; Check whether the circuit power supply mode (internal power supply or external power supply) is consistent with the field instrument; The signal generator is used to add a signal to each channel at the field end, usually taking 0, 50% or 100% three points for inspection. For the AI loop with alarm and interlock value, it is also necessary to check the alarm interlock value (such as high, low and interlock points and accuracy) to confirm the correctness of the alarm and interlock state.

(2) Analog output (AO) loop debugging. According to the requirements of loop control, the actuator (such as valve opening, etc.) can be checked by manual output (that is, directly set in the control system), usually 0, 50% or 100% three points for inspection; At the same time, through the closed-loop control, check whether the output meets the relevant requirements.