輸入信號: | 4-20mA |
輸出信號: | 4-20mA |
電壓范圍: | AC220V、DC24V、AC380V等 |
故障位置: | 開、關(guān)、停 |
電動閥門智能定位器是以工業(yè)單片機(jī)為核心的智能信號采集控制系統(tǒng),體積小巧,可選擇安裝在電動執(zhí)行器的接線盒內(nèi)或以DIN導(dǎo)軌方式固定在外,能直接接收工業(yè)儀表或計(jì)算機(jī)等輸出的4~20mA DC信號(其它輸入信號類型可在出廠前定制),與電位器反饋的電動執(zhí)行器配套對各種閥門或裝置進(jìn)行精確定位操作,能對電動執(zhí)行器的轉(zhuǎn)角(或位移)進(jìn)行自由標(biāo)定,同時輸出4~20mA DC的執(zhí)行器轉(zhuǎn)角位置(或位移)反饋轉(zhuǎn)換信號,可按鍵精確設(shè)定執(zhí)行器轉(zhuǎn)角位置的下限限位值和上限限位值,定位器采用3個按鍵操作,9個LED燈可直接顯示定位器模態(tài),4位數(shù)碼LED通過按鍵切換顯示閥位實(shí)際開度值、閥位設(shè)定開度值、定位器殼內(nèi)溫度,操作方便。
1,控制精度:0.1%~3.0%(通過U4參數(shù)可調(diào))
2,可接電動執(zhí)行器反饋信號:電位器500Ω~10KΩ
3,可接收外部控制信號(DC):4~20mA (1~5V、0~10V、開關(guān)量等出廠前定制)
3,輸入阻抗:250Ω;
4,通過修改U1參數(shù)可設(shè)定:①DRTA/正動作,RVSA/逆動作模態(tài) ②輸入信號中斷時“中斷”模態(tài)—OPEN(開)、STOP(停)、SHUT(閉)
可選:①可控硅輸出(AC,1000V,25A)②繼電器輸出(AC,250V,10A)◆定貨時指明
5,輸出執(zhí)行器位置信號:低漂移輸出4~20mADC對應(yīng)執(zhí)行器全閉至全開,信號完全與輸入隔離(光電隔離),輸出負(fù)載≤500Ω
6,環(huán)境溫度:0~70℃,相對濕度:≤90%RH
7,有超溫保護(hù)功能: 定位器殼內(nèi)溫度≥70℃時,定位器停止對執(zhí)行器的開閉控制
8,可通過按鍵自由標(biāo)定輸入信號所對應(yīng)執(zhí)行器的動作區(qū)間(一般標(biāo)定為電動執(zhí)行器全閉、全開位置)
9,可設(shè)定上下限位點(diǎn)
10,執(zhí)行器堵轉(zhuǎn)檢測控制功能:如控制執(zhí)行器發(fā)生堵轉(zhuǎn)持續(xù)3~4S,定位器則斷開控制輸出1min;反復(fù)檢測控制,至堵轉(zhuǎn)排除。
11,可設(shè)定自調(diào)精度:執(zhí)行器在工作過程中,無法定位,出現(xiàn)來回振動3次,定位器自動把定位精度降低1/1000(即:原精度+1/1000),反復(fù)調(diào)節(jié)至適合的控制精度。設(shè)置參數(shù)為U0(000.x)
12,密碼鎖,防止誤操作
13,防執(zhí)行器頻繁啟動功能
14,帶錯誤代碼指示故障原因(E_0X)
15,按輸入信號和執(zhí)行器轉(zhuǎn)角位置進(jìn)行智能步距調(diào)整精確定位
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