描述
固體器件開關(guān)激勵(lì):a.固體器件開關(guān)的負(fù)載能力必須與被激勵(lì)繼電器的線圈相適應(yīng),且留有充分的裕量(一般為2倍)。b.固體器件開關(guān)接通時(shí),激勵(lì)回路電壓分配必須確保繼電器線圈上的實(shí)際激勵(lì)電壓值符合額定工作電壓要求。c.固體器件開關(guān)關(guān)斷時(shí),激勵(lì)回路的漏電流必須小于繼電器的最小釋放電流。d.固體器件開關(guān)反向耐壓必須與50~80V峰值電壓相適應(yīng),且具有必要的余量。由于繼電器線圈斷電瞬間,會(huì)產(chǎn)生很高的浪涌電壓,有時(shí)可達(dá)1500V,為將電壓峰值限制在50~80V之內(nèi),必須采用適當(dāng)?shù)囊种拼胧5蛪杭?lì)與高壓輸出隔離:現(xiàn)代工業(yè)自動(dòng)控制系統(tǒng)中,往往以低壓回路的固體器件開關(guān)控制小型中間繼電器的輸入,再用該繼電器的觸點(diǎn)轉(zhuǎn)換220VAC或380VAC感性負(fù)載回路(如電磁鐵、接觸器線圈……),實(shí)現(xiàn)自動(dòng)控制和保護(hù)功能。中間繼電器實(shí)際上承擔(dān)了低壓、高壓隔離并轉(zhuǎn)換感性負(fù)載功能。選用此類中間繼電器,必須具備良好的絕緣抗電水平和長期耐受高、低溫、潮濕、砂塵及有害氣體作用的能力。一般說來,抗惡劣環(huán)境能力,可由密封措施與必要的防護(hù)手段加以保證;絕緣抗電水平可由絕緣間隙、配電距離嚴(yán)格的控制、認(rèn)定得以保證。
產(chǎn)品廣泛應(yīng)用于:電力、石油、礦井提升、港口、供熱、燃?xì)?、供水、污水處理、冶金、造紙、紡織、化工、水利等現(xiàn)代化工業(yè)領(lǐng)域!
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主營:世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
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