1746-R14產(chǎn)品描述:
1746-R14
【1】DCS控制系統(tǒng)
【2】機(jī)器人系統(tǒng)
【3】PLC系統(tǒng)
【4】伺服數(shù)控系統(tǒng)
【服務(wù)說明】現(xiàn)貨配送至全國各地含稅含運(yùn)費(fèi)
【產(chǎn)品質(zhì)量】全新原裝正品 有發(fā)票
【產(chǎn)品優(yōu)勢】專業(yè)銷售 薄利多銷 信譽(yù)好,價格低,貨期短,服務(wù)周到
公司主營:
Allen-Bradley(美國AB)系列產(chǎn)品》
Schneider(施耐德電氣)系列產(chǎn)品》
General electric(通用電氣)系列產(chǎn)品》
Westinghouse(美國西屋)系列產(chǎn)品》
SIEMENS(西門子系列產(chǎn)品)》
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隨著紡織行業(yè)對紗線的品質(zhì)要求的提高,對綿紗的絲紡控制愈加細(xì)微,于是如紗線的接頭長度、支數(shù)、張力等成為紗紡的關(guān)鍵指針。 針對以上要求,國內(nèi)紡織制造業(yè)正以性能更可靠、更穩(wěn)定的PLC逐步取代國外流行以單片機(jī)為控制核心的紡紗系統(tǒng)。另外隨著人機(jī)接口-觸摸屏、變頻器的應(yīng)用推廣,一些超前的企業(yè)及時地將人機(jī)接口、變頻整合在該行業(yè)電氣控制系統(tǒng)中,為精確的控制增添新的亮點(diǎn)。如江蘇一企業(yè)的氣流紡織機(jī),就采用了SIEMA公司的PLC及其模塊,。該系統(tǒng)采用單臺人機(jī)接口-觸摸屏通過RS-485總線,實時對PLC進(jìn)行監(jiān)控、參數(shù)調(diào)整、斷紗自動報警等多項功能。該系統(tǒng)的PLC通過調(diào)整一百多個電磁鐵開合時間來實現(xiàn)紗線接頭長度及紗線支數(shù)的調(diào)整,由于受電磁線圈消磁特性及紗線粘度、引紗電機(jī)的速度等綜合影響,電磁鐵的開合時間亦通常有0.02-0.06秒的衛(wèi)小調(diào)整來滿足生產(chǎn)的需要。所以該系統(tǒng)單臺人機(jī)接口的點(diǎn)睛運(yùn)用,在有效控制成本的基礎(chǔ)上,極大地提高了生產(chǎn)效率及生產(chǎn)工義指針。 該系統(tǒng)PLC的I/O點(diǎn)非常多,有八九百個點(diǎn),面對如此龐大的系統(tǒng)設(shè)計及其成本的壓力,設(shè)計者卻一反傳統(tǒng)的大而大做,巧妙地利用西門子公司200系列PLC(自帶485口)及人機(jī)接口共同支持MODBUS協(xié)議的特點(diǎn),及其SIEMA公司200系列32DI、32DO、8TC、8AI、4RTD、4AO 等大點(diǎn)數(shù)模塊,根據(jù)紡紗工藝的要求,將I/O點(diǎn)分為5臺PLC主機(jī)的小系統(tǒng),僅用雙絞線將傳統(tǒng)的5臺PLC與人機(jī)接口連為統(tǒng)一的"大系統(tǒng)",真正做到了大系統(tǒng)小設(shè)計。 同比全部采用西門子PLC及其模塊之下大大節(jié)省了成本,同時SIEMA公司產(chǎn)品質(zhì)量好,運(yùn)行穩(wěn)定,保證了系統(tǒng)的可靠性。 在實際應(yīng)用中,該系統(tǒng)的引紗、喂給電機(jī)的頻率及相互匹配系數(shù),可直接通過觸摸面板快捷地調(diào)整和電流的實時監(jiān)控,并且使線上所有5臺PLC程序嚴(yán)格的一致,增加了PLC應(yīng)急互換性,實現(xiàn)了多層控制單一化,復(fù)雜簡單化。 縱觀整個控制系統(tǒng),簡潔、準(zhǔn)確、節(jié)能、人性化的設(shè)計風(fēng)格無不透著現(xiàn)代設(shè)計者的匠心獨(dú)具。
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