MVI69-PDPS

MVI69-PDPS

MVI69-PDPS  PID控制設計
     將出廠水總管壓力壓力傳感器傳來的電流信號（4-20mA）輸入到三菱變頻器反饋信號輸入端子；泵房

控制子站PLC接受到來自人機界面的壓力要求，壓力指令通過控制子站EM235模塊將模擬量輸出轉換成4～

20mA電流信號輸出，該電流信號作為PID信號傳送到三菱變頻器PID控制器作為設定值；變頻器的PID控制器

根據采集的信號計算出偏差量I(t)，按照PID的微積分控制規則計算出控制量頻率△f(t),并將頻率控制量送

至變頻器控制器，通過調整變頻器的輸出頻率改變水泵電機的轉速，達到調整壓力的需求，完成變速恒壓供

水的目的。

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Original Mining Sticker: Saftronics
Original Sticker: Saftronics. Mining.
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