JARCR-XFB01B
JARCR-XFB01B
JARCR-XFB01B細紗機變頻調(diào)速恒張力運行的實現(xiàn)
采用變頻調(diào)速器控制細紗機的主傳動電機,可方便地達到以上目的。我們采用普傳科技研制的新型低噪音、多功能變頻調(diào)速器系統(tǒng),開發(fā)了滿足細紗機運行的特殊功能。
因為張力與轉(zhuǎn)速成近似的反比關(guān)系,小紗和大紗時,適當(dāng)?shù)亟档娃D(zhuǎn)速,可減小細紗所受張力。中紗時,使轉(zhuǎn)速高于原不調(diào)速時的轉(zhuǎn)速,此時張力仍低于所能承受的大限張力,彌補原不調(diào)速時的“速度損失”,以提高產(chǎn)量改變紡紗品種時,只需通過普傳變頻器鍵盤改變5個參數(shù),即可改變以上藝曲線。小紗運行轉(zhuǎn)速 n1小紗運行時間 T1中紗運行轉(zhuǎn)速 n2 小紗運行時間 T2大紗運行轉(zhuǎn)速 n3
(以上數(shù)據(jù)可用密碼保護,使無關(guān)人員無法隨意改變)
由于小、中、大紗階段直接反映在細紗錠子上,這三個階段無明顯的分界點,無法測量,我們采用紡紗時間取代。針對般品種細紗,小紗階段大約需要1-25小時,中紗階段約5-8小時,大紗階段約1-2小時。具體數(shù)據(jù)由經(jīng)驗豐富的車間藝員來設(shè)定。需要注意的是,大紗階段的時間是不確定的。實用中我們設(shè)定為大數(shù)值65000秒(約18小時),當(dāng)落紗紡?fù)陼r,普傳變頻器停止輸出,落紗信號有效,使普傳變頻器的圖形運轉(zhuǎn)程序復(fù)位。這樣上新的落紗時,普傳變頻器便又從小紗階段開始運行了。
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