1746-R11產品描述:
1746-R11
【公 司】: 廈門卡庫電氣有限公司
【主 營】: AB、GE、施耐德等各類PLC產品
【價 格】: 電議
【發布人】: 嚴小姐
【電 話】: 18030229052
【所在地】: 福建 - 廈門
【坐 機】: 0592-5709823
【Q Q】: 1093230189
系統控制要求[1] 運料小車自動往返順序控制系統示意圖,如圖1所示,小車在啟動前位于原位A處,一個工作周期的流程控制要求如下: 1)按下啟動按鈕SB1,小車從原位A裝料,10秒后小車前進駛向1號位,到達1號位后停8秒卸料并后退; 2)小車后退到原位A繼續裝料,10秒后小車第二次前進駛向2號位,到達2號位后停8秒卸料并再次后退返回原位A,然后開始下一輪循環工作; 3)若按下停止按鈕SB2,需完成一個工作周期后才停止工作。 [align=center] 圖1運料小車自動往返順序控制系統示意圖[/align] 程序設計方案 根據系統控制要求,系統的輸入量有:啟、停按鈕信號; 原位、1號位、2號位限位開關信號;系統的輸出信號有:裝料、卸料控制電磁閥驅動信號;前進、后退控制電機接觸器驅動信號。共需實際輸入點數5個,輸出點數4個。運料小車自動往返順序控制系統PLC的I/O接線圖如圖2所示: [align=center]
圖2 PLC I/O接線圖[/align] 上述控制過程可用PLC的順序功能圖[2](又稱控制系統流程圖)來表示,它是一種位于其它編程語言之上的圖形語言,用來編制順序控制程序。
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