GE IC693PWR330
為了系統(tǒng)安全運(yùn)行,閉環(huán)控制器一定是冗余運(yùn)行的,一用一備,并且是熱備。為了使冗余成功,應(yīng)注意以下幾點(diǎn):兩個(gè)控制器的硬件、軟件版本必需一致;檢查發(fā)送-接收的芯片是否完好;冗余的芯片是否完好。兩個(gè)模件的設(shè)定是否一樣、還要檢查有沒(méi)有帶手操站等。
通訊網(wǎng)絡(luò)把過(guò)程站和人機(jī)界面連成一個(gè)系統(tǒng)。通訊網(wǎng)絡(luò)有幾種不同的結(jié)構(gòu)行式。如總線式、環(huán)形和星形(見(jiàn)圖)。總線形在邏輯上也是環(huán)形的。星形的只適用于小系統(tǒng)。不論是環(huán)形還是總線形,一般都采用廣播式。其它一些協(xié)議方式已用的較少。通訊網(wǎng)絡(luò)的速率在10M和100M左右。
人機(jī)界面有4種不同形式的結(jié)點(diǎn),它們是操作站、工程師工作站、歷史趨勢(shì)站和動(dòng)態(tài)數(shù)據(jù)服務(wù)器。
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廈門(mén)莫格電氣自動(dòng)化有限公司
聯(lián)系人:張芳(銷售工程師)
手 機(jī):17750626260
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