?1746-NO4I
1746-NO4I
1746-NO4I
2?抗干擾的技術(shù)對(duì)策分析
為防止干擾,可采用硬件和軟件的抗干擾措施,其中,硬件抗干擾是最基本和最重要的抗干擾措施,一般從抗和防兩方面入手來(lái)抑制和消除干擾源,切斷干擾對(duì)系統(tǒng)的耦合通道,降低系統(tǒng)對(duì)干擾信號(hào)的敏感性。
2.1?電源系統(tǒng)引入的干擾?
電網(wǎng)的干擾,頻率的波動(dòng),將直接影響到PLC系統(tǒng)的可靠性與穩(wěn)定性。如何抑制電源系統(tǒng)的干擾是提高PLC的抗干擾性能的主要環(huán)節(jié)。
(1)?加裝濾波、隔離、屏蔽、開關(guān)穩(wěn)壓電源系統(tǒng)。?
設(shè)置濾波器的作用是為了抑制干擾信號(hào)從電源線傳導(dǎo)到系統(tǒng)中,使用隔離變壓器,必須注意:屏蔽層要良好接地;次級(jí)連接線要使用雙繞線(減少電線間的干擾),隔離變壓器的初級(jí)繞組和次級(jí)繞組應(yīng)分別加屏蔽層,初級(jí)的屏蔽層接交流電網(wǎng)的零線;次級(jí)的屏蔽層和初級(jí)間屏蔽層接直流端。?
【價(jià)格】 ? 如此低價(jià),僅此一家
【貨期】 ? 3億庫(kù)存,下單后即可發(fā)貨
【質(zhì)量】 ? 全新原裝,進(jìn)口正品
【保障】 ? 質(zhì)保一年
【售后服務(wù)】一年內(nèi)包退換
〖廈門泰尼電氣有限公司〗
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