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整體調節型部分回轉電動執行器

結構原理：

1、組成部分編輯

MW系列角行(xing)程調節電動(dong)執行(xing)機構由動(dong)力部(bu)(bu)件和(he)位(wei)置(zhi)定位(wei)器（PM-2控(kong)(kong)制(zhi)板(ban)）兩大部(bu)(bu)分(fen)組成。其(qi)中(zhong)動(dong)力部(bu)(bu)件主(zhu)要由電動(dong)機、減速器、力矩行(xing)程限制(zhi)器、開關控(kong)(kong)制(zhi)箱(xiang)、手輪和(he)機械限位(wei)裝置(zhi)以及位(wei)置(zhi)發送器等組成，其(qi)各部(bu)(bu)分(fen)作用簡述如下：

2、電動機

電(dian)(dian)(dian)(dian)(dian)動(dong)機是特(te)種單(dan)相或三相交流異步電(dian)(dian)(dian)(dian)(dian)動(dong)機，具有(you)高啟動(dong)力矩、低啟動(dong)電(dian)(dian)(dian)(dian)(dian)流和較(jiao)小的轉動(dong)慣(guan)量，因而有(you)較(jiao)好(hao)的伺服(fu)特(te)性。在(zai)電(dian)(dian)(dian)(dian)(dian)動(dong)機定子(zi)內(nei)部裝(zhuang)有(you)熱(re)(re)敏開(kai)(kai)關（詳見圖3所示(shi)）做過熱(re)(re)保護，當(dang)電(dian)(dian)(dian)(dian)(dian)動(dong)機出現異常(chang)過熱(re)(re)（內(nei)部溫度超(chao)過130℃）時該開(kai)(kai)關將控制電(dian)(dian)(dian)(dian)(dian)動(dong)機的電(dian)(dian)(dian)(dian)(dian)路斷(duan)開(kai)(kai)以(yi)保護電(dian)(dian)(dian)(dian)(dian)動(dong)機和執(zhi)(zhi)行機構，當(dang)電(dian)(dian)(dian)(dian)(dian)動(dong)機冷卻以(yi)后開(kai)(kai)關恢復接通(tong)，電(dian)(dian)(dian)(dian)(dian)路恢復工(gong)作(zuo)。為了克服(fu)慣(guan)性惰走，調節型電(dian)(dian)(dian)(dian)(dian)動(dong)執(zhi)(zhi)行機構的電(dian)(dian)(dian)(dian)(dian)動(dong)機控制電(dian)(dian)(dian)(dian)(dian)路均(jun)有(you)電(dian)(dian)(dian)(dian)(dian)制動(dong)功(gong)能。

整體調節型部分回轉電動執行器工(gong)作(zuo)環境和主要技術(shu)參數：

1電(dian)源(yuan)：常規，三相(xiang)380V（50Hz）

特(te)殊，三相660V、415V（50Hz、60Hz）；

單(dan)相(xiang)220V、110V（50Hz、60Hz）

2工作環境

2.1環境溫度：-20~+60℃（特殊訂貨-40~+80℃）

2.2相(xiang)對濕度(du)：≤95%（25℃時）

2.3防護類型

2.3.1戶(hu)外型：用于無(wu)(wu)易燃、易爆(bao)和無(wu)(wu)腐(fu)蝕性介質的(de)場所(suo)；

2.3.2隔爆型：有dI和dIIBT4兩(liang)種，dI適(shi)用于(yu)煤礦非采(cai)掘工(gong)作(zuo)面；dIIBT4用于(yu)工(gong)廠，適(shi)用于(yu)環境為IIA、IIB級T1-T4組的爆炸性氣體混(hun)合物。（詳(xiang)見GB3836.1）

2.4防護等級(ji)：IP55（特殊訂貨IP65、IP67）

2.5工作制：短(duan)時10分(fen)鐘（特殊訂(ding)貨30分(fen)鐘）