QJ71E71-100
QJ71E71-100
QJ71E71-100恒壓供水系統(tǒng)硬件設(shè)計(jì)
本文中的自動(dòng)恒壓供水控制系統(tǒng)的核心硬件是由PLC網(wǎng)絡(luò)(S0及S7-200由Profibus-DP構(gòu)成PLC網(wǎng)絡(luò))、人機(jī)界面(WINCC)、兩臺(tái)臺(tái)達(dá)VFD-F變頻器分別一對(duì)一拖動(dòng)兩臺(tái)水泵電機(jī)(KQSN-500M9621)、壓力變送器、水池液位計(jì)等組成。人機(jī)界面接受操作人員輸入操作指令(如恒水壓指令等)和監(jiān)控執(zhí)行機(jī)構(gòu)的運(yùn)行情況;PLC為控制機(jī)構(gòu),進(jìn)行數(shù)據(jù)傳輸及控制指令的發(fā)布;變頻器執(zhí)行PID控制拖動(dòng)水泵機(jī)組;壓力變送器監(jiān)控管道壓力并向控制系統(tǒng)傳輸壓力信號(hào)(4-20mA電流)。水廠PID自動(dòng)恒壓供水系統(tǒng)核心硬件構(gòu)成圖如圖1所示。FANUC A06B-0345-B231 AC SERVO MOTOR 5F/3000
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