190E-AND2-DB63C-F20現(xiàn)貨
主營: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、Panasonic Robots、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/輸出信號處理、數(shù)據(jù)通信及處理等。
Invensys Triconex: 冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)結(jié)構(gòu)的現(xiàn)代化的容錯控制器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)動模塊等。
⑾Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列
3 存在問題原因
原F40型定位器性能差,壽命短,內(nèi)部橡膠密封圈老化,控制輸出線性較差,氣室內(nèi)部普遍存在漏氣、串氣現(xiàn)象,且控制輸出氣孔較小,極易堵塞,造成控制輸出氣源不穩(wěn)定,執(zhí)行機構(gòu)動作不靈活,經(jīng)常造成風門擋板失控,使被調(diào)工況超出允許范圍,影響機組的安全運行。
4 定位器更換技術(shù)
拆除原來的F40定位器,加工ABB定位器與現(xiàn)氣缸連接轉(zhuǎn)換接頭,ABB定位器與轉(zhuǎn)換接頭裝配,ABB定位器安裝到氣缸上,重新進行管路配接、接線,ABB定位器送電,機務定位風門擋板開度位置,單體調(diào)試,系統(tǒng)聯(lián)調(diào),終調(diào)試達到工作要求。
1)定位器配件齊全,安裝固定牢固,無松動現(xiàn)象,定位器和氣缸連接無空行程。2)定位器接線要準確,氣源管路連接正確,定位器控制氣源管路各接口要纏繞生料帶。3)擋板或閥門的全開和全關定位要和機務、運行人員一塊進行,確保定位準確。4)檢查電氣轉(zhuǎn)換器各功能菜單顯示正常。檢查電氣轉(zhuǎn)換器各參數(shù)設置準確。切換至組態(tài)模式,修改組態(tài)參數(shù)。5)儀用氣源閥門打開,調(diào)整減壓閥壓力,使氣源壓力符合要求,對失氣后保位手柄進行復位。6)ABB定位器進行自動整定。滿足擋板全開全關旋轉(zhuǎn)角度的條件。滿足4~20MA輸入信號和擋板開關方向的對應關系在定位器更換前后一致,零點、量程和閥門實際開度一致。7)通過就地操作面板或手掄操作執(zhí)行機構(gòu),檢查執(zhí)行機構(gòu)和擋板或閥門動作情況,執(zhí)行器動作靈活無卡澀。8)通過CRT遠方操作執(zhí)行機構(gòu),核實開關方向、閥位反饋和擋板或閥門動作情況應一致。9)系統(tǒng)靜態(tài)閉環(huán)試驗,保證控制軟件的正確性。
??????????????????????????????????????????????????表1
序號 產(chǎn)生費用科目(設備、材料、人工等) 單位 單價(萬元) 數(shù)量
1 管纜¢8 米 100? 0.005
2 ABB定位器TZID-C 臺 24 1.7
3 轉(zhuǎn)換接頭TZID-C配套 個 24 0.07
5 TZID-C型I/P電氣轉(zhuǎn)換器
TZID-C型定位器核心是微控制處理器CPU,所有程序的處理運算皆在此。輸入信號及位置反饋經(jīng)過4000步12位,20ms采樣的A/D轉(zhuǎn)換器進行處理,從而保證了信號處理的精度及快速性,CPU的供電直接取自輸入信號,操作程序包括用于自動調(diào)整參數(shù)的自整定過程,及自適應控制程序,用于精確定位的優(yōu)化控制操作,通過帶三位三通放大器的電氣轉(zhuǎn)換器驅(qū)動氣動執(zhí)行機構(gòu),從CPU發(fā)出的定位電信號比例地轉(zhuǎn)換成氣信號,成比例地調(diào)節(jié)3/3氣動開關,氣體從定位器輸出至氣動執(zhí)行器及氣體的排放均成比例地調(diào)節(jié),當?shù)竭_設定定位值時,3/3氣動開關鎖定在中間狀態(tài);TZID-C定位器配有的操作面板,包括兩排LCD顯示器和4個按鍵,如圖5。
TZID-C型I/P電氣轉(zhuǎn)換器功能鍵介紹
ENTER 確認鍵 各鍵相互配合,可實現(xiàn)不同功能(詳見調(diào)試步驟)
MODE 菜單確認鍵
參數(shù)改變鍵
參數(shù)改變鍵
??????????????????????圖5 TZID-C型I/P電氣轉(zhuǎn)換器功能鍵
操作鍵盤的優(yōu)化設計適用于就地組態(tài),調(diào)校及監(jiān)測。同時.組態(tài)、操作及監(jiān)測功能可以通過HART通訊協(xié)議與PC機連接,并由TZID-C內(nèi)置通訊端口來完成:還可以通過FSK-Modem在4~20mA信號線的任意點接入進行通訊。采用模塊化的設計,任何附加功能
可以在基本模件的基礎上隨意擴展。只要插入相應的模件,既可實現(xiàn)模擬及數(shù)字反饋功能。也可以選裝限位開關(微動開關)及機械指示。
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