KEBA DI325【】KEBA DI325
KEBA DI325【】KEBA DI325原料皮帶運(yùn)輸機(jī)工作原理如圖所示。原料從料斗經(jīng)兩臺(tái)皮帶機(jī)PD2、PD1輸送,向PD2供料由電磁閥YV控制,PD1和PD2分別由電動(dòng)機(jī)M1和M2驅(qū)動(dòng)、電磁閥YV由電磁鐵YA驅(qū)動(dòng)。試設(shè)計(jì)其plc控制系統(tǒng)。
1)該皮帶運(yùn)輸機(jī)的控制要求
啟動(dòng)時(shí),PD1啟動(dòng)5S后PD2啟動(dòng),再過(guò)5s電磁閥YV動(dòng)作供料;停止時(shí),先停電磁閥,10s后再停PD2,再過(guò)10s才停PD1;緊急情況或過(guò)載時(shí)無(wú)條件全部停止。
2)確定現(xiàn)場(chǎng)器件與PLC繼電器地址編號(hào)的對(duì)應(yīng)關(guān)系
經(jīng)過(guò)分析確定采用5個(gè)輸入繼電器,3個(gè)輸出繼電器,對(duì)應(yīng)關(guān)系為:
啟動(dòng)按鈕SB1→I400,停止按鈕SB2→I401,急停SB3→I403,熱保護(hù)FR1→I403,熱保護(hù)FR2→I404,M1接觸器KM1→Q430,M2接觸器KM2→Q431,電磁鐵YA→Q432。
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