UFC760BE42輸出模塊,UFC760BE42產(chǎn)品外觀
網(wǎng)絡(luò)中主站控制器布置在運(yùn)輸絞車控制室，采集礦車位置信號；分站控制器布置在擋車欄附近，就地控制擋車欄提升下放，一個分站對應(yīng)控制一個擋車欄。主站控制器FX3GA-24MR-CM編程口連接昆侖通態(tài)的HMI（TPC1061Ti）顯示各個擋車欄的狀態(tài)信息。整個控制系統(tǒng)結(jié)構(gòu)簡圖如下圖一所示。
由于煤礦井下使用設(shè)備防爆要求，整個系統(tǒng)由防爆箱體主控箱、電控箱、操作箱組成。主控箱做主站，電控箱做分站，操作箱相當(dāng)于上位機(jī)。主站、分站之間屬同品牌PLC通訊連接，主站另外一個通訊口（FX3GA-24MR-CM編程口）連接上位機(jī)— 昆侖通態(tài)HMI（TPC1061Ti）。操作箱中用到了一個臺達(dá)小型PLC（DVP14SS211T）采集面板按鍵信號，由于防爆設(shè)計中本安電路與非本安電路隔離的要求，操作箱面板上的本安按鍵信號經(jīng)過了隔離轉(zhuǎn)換成非本安信號后才連接到PLC（DVP14SS211T）。昆侖通態(tài)HMI（TPC1061Ti）一個標(biāo)準(zhǔn)的9針串口引腳定義了兩個通訊接口，一個RS232（COM1）和一個RS485（COM2）分別連接了主站三菱PLC（FX3GA-24MR-CM）和操作箱中一只臺達(dá)PLC（DVP14SS211T）。
絞車工作牽引礦車上行運(yùn)煤，主站PLC接收到礦車到達(dá)擋車欄后方特定位置信號，下發(fā)指令給相應(yīng)的分站PLC控制對應(yīng)擋車欄提升；礦車順利通過擋車欄，主站PLC接收到礦車上行到達(dá)擋車欄前方特定位置信號，下發(fā)指令給相應(yīng)的分站PLC控制對應(yīng)擋車欄下放。礦車向下運(yùn)行，主站PLC接收到礦車到達(dá)擋車欄前方特定位置信號，下發(fā)指令給相應(yīng)的分站PLC控制對應(yīng)擋車欄提升；礦車順利通過擋車欄，主站PLC接收到礦車到達(dá)擋車欄后方特定位置信號，下發(fā)指令給相應(yīng)的分站PLC控制對應(yīng)擋車欄下放。各擋車欄狀態(tài)信息集中傳送到主控PLC，由HMI顯示提供給絞車司機(jī)監(jiān)視，擋車欄故障時發(fā)出聲光報警，提醒司機(jī)做相應(yīng)處理。操作箱上設(shè)置有控制面板，可以集中控制所有聯(lián)網(wǎng)擋車欄動作、故障復(fù)位，也可以單獨(dú)控制某套擋車欄運(yùn)行。
4、系統(tǒng)調(diào)試
分站控制擋車欄運(yùn)行調(diào)試
1)校正電機(jī)運(yùn)轉(zhuǎn)方向與提升下放擋車欄指令一致。
2) 擋車欄提升下放多次，校正固定好機(jī)械裝置后設(shè)置PLC中擋車欄運(yùn)行時間參數(shù)（擋車欄上下限位傳感器故障后，有這個時間參數(shù)，計時時間到同樣也可以停止擋車欄的運(yùn)行），設(shè)置分站PLC站號。
This is the first generation programmable controller, called programmable controller (PC).
After the development of personal computer (PC for short), the programmable controller was named programmable logic controller (PLC) for convenience and to reflect the functional characteristics of programmable controller. Now, PLC is often referred to as PC for short.
There are many definitions of PLC. The International Electrotechnical Commission (IEC) defines PLC as: programmable controller is an electronic system with digital operation, which is designed for application in industrial environment. It adopts programmable memory, which is used to store and execute instructions for logical operation, sequence control, timing, counting and arithmetic operation, and control various types of machinery or production processes through digital and analog input and output. The programmable controller and its related equipment shall be designed according to the principle of easy integration with the industrial control system and easy expansion of its functions.
From the 1980s to the mid-1990s, PLC developed fastest, with an annual growth rate of 30 ~ 40%. During this period, PLC has greatly improved its ability to deal with analog quantity, digital operation, man-machine interface and network. PLC has gradually entered the field of process control and replaced the dominant DCS system in the field of process control in some applications.
PLC has the characteristics of strong universality, convenient use,
