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361159435
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樓主  發(fā)表于: 2011-11-29 12:40
本人為初學(xué)者,求皮帶運輸機的PLC程式設計,控制要求如下;
   供料由電磁閥DTT控制,電動(dòng)機M1,M2,M3,M4分別為驅動(dòng)皮帶運輸線(xiàn)PD1,PD2,PD3,PD4.
1.正常啟動(dòng),倉空或按啟動(dòng)按鈕式的啟動(dòng)順序為M1,DT,M2,M3,M4,間隔時(shí)間為5S;
2.正常停止,為使皮帶上不留物料,要求物料流動(dòng)方向按一定得時(shí)間間隔停止,即正常停止的順序為DT,M1,M2,M3,M4間隔時(shí)間5S;
3.故障后啟動(dòng),為避免前段皮帶上造成物料堆積,要求按物料流動(dòng)相反方向按一定得時(shí)間間隔順序啟動(dòng),即故障后啟動(dòng)順序為M4,M3,M2,M1,DT,間隔時(shí)間10s;
4.緊急停止,當出現意外時(shí),按下緊急停止按鈕,則停止所有電動(dòng)機和電磁閥;
5.具有點(diǎn)動(dòng)功能;
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1樓  發(fā)表于: 2012-01-21 09:12
皮帶運輸機PLC程式設計有問(wèn)題  QQ448571342

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