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    JD2A電磁調(diào)速電機(jī)控制器

    更新:2013/9/12 13:23:29      點(diǎn)擊:
    • 產(chǎn)品品牌   
    • 產(chǎn)品型號(hào)   JD2A
    • 產(chǎn)品描述

      JD2A電磁調(diào)速電機(jī)控制器,是上海人民電氣有限公司 http://m.hqbet5695.com 為您提供的關(guān)于JD2A電磁調(diào)速電機(jī)控制器型號(hào),JD2A電磁調(diào)速電機(jī)控制器價(jià)格,有關(guān)JD2A電磁調(diào)速電...

    產(chǎn)品介紹

    概述

    JD1、JD2系列控制器是機(jī)械工業(yè)部全國(guó)聯(lián)合設(shè)計(jì)的最新產(chǎn)品,已通過(guò)部級(jí)鑒定,用作JZT,YCT系列電磁調(diào)速電機(jī)的控制設(shè)備,操作控制器面板上的旋鈕,可實(shí)現(xiàn)電機(jī)寬范圍無(wú)級(jí)調(diào)速,當(dāng)負(fù)載為風(fēng)機(jī)和泵類時(shí),節(jié)電效果顯著,可達(dá)20~30%,是我國(guó)目前推廣的節(jié)能產(chǎn)品之一。

    一、品種和主要技術(shù)數(shù)據(jù)

     

    手操普通型(JD1A為指針式,JD2A為數(shù)顯式):

    型號(hào)

    JD1A、JD2A-11

    JD1A、JD2A-40

    JD1A、JD2A-90

    調(diào)速范圍

    125~1250轉(zhuǎn)/

    132~1320轉(zhuǎn)/

    440~1320轉(zhuǎn)/

    控制電機(jī)功率

    0.55~11KW

    15~40KW

    45~90KW

    最大輸出定額

    DC90V3A

    DC90V5A

    DC90V8A

    轉(zhuǎn)速變化率

    3%

    穩(wěn)速精度

    1%

    輸入電源

    交流220V±10% 50~60HZ

    二、使用環(huán)境

     

    最高環(huán)境溫度不超過(guò)40℃,海撥不超過(guò)1000米,相對(duì)濕度不超過(guò)90%,適用于少灰塵、無(wú)腐蝕性、爆炸性氣體的場(chǎng)合。

     

    三、工作原理

     

    JD1、JD2系列電磁調(diào)速電動(dòng)機(jī)控制器是由速度調(diào)節(jié)器、移相觸發(fā)器、可控硅整流電路及負(fù)反饋等環(huán)節(jié)所組成。

    JD1AJD2A原理相同,速度指令信號(hào)電壓和速度負(fù)反饋信號(hào)電壓比較后,其差值信號(hào)被送入速度調(diào)節(jié)器進(jìn)行放大。放大后的信號(hào)電壓與鋸齒波疊加,控制了晶體管GB1的導(dǎo)通時(shí)刻,隨著差值信號(hào)電壓改變移動(dòng)脈沖,從而控制了可控硅的開(kāi)放角,使滑差離合器的激磁電流隨著變化,即滑差離合器的轉(zhuǎn)速隨著激磁電流的改變而改變。

     

    四、結(jié)構(gòu)與按裝接線

     

    JD1A、JD2A系列電磁調(diào)速電動(dòng)機(jī)控制器的結(jié)構(gòu)為塑殼密封結(jié)構(gòu),具有IP5X的防塵等級(jí),可用于面板嵌入式或墻掛式安裝,底部進(jìn)線。其外型尺寸、安裝方式和和聯(lián)并接線如圖

     

    五、調(diào)整與試運(yùn)行

     

    1、JD1AJD2A按(圖1)接線,輸出端(3)、(4)接入離合器線圈或接入100W的照明燈泡做摸擬負(fù)載,并在輸出端接入100V以上的直流電壓表

    2、接通電源,指示燈亮,當(dāng)轉(zhuǎn)動(dòng)速度指令電位器W1時(shí),輸出端應(yīng)有0~90V的突跳電壓(因測(cè)速負(fù)反饋未加入時(shí)的開(kāi)環(huán)放大倍數(shù)很大,則認(rèn)為開(kāi)環(huán)時(shí)工作基本正常)。

    3、起動(dòng)交流異步電動(dòng)機(jī),使系統(tǒng)閉環(huán)工作。

    a、轉(zhuǎn)速表的校正(適用于JD1A,JD2A跳過(guò)此項(xiàng)操作):由于每臺(tái)測(cè)速發(fā)電機(jī)的電壓都不同,故轉(zhuǎn)速表上的指示值必須要根據(jù)實(shí)際轉(zhuǎn)速進(jìn)行校正。當(dāng)離合器運(yùn)轉(zhuǎn)在某一轉(zhuǎn)速時(shí),用軸測(cè)式轉(zhuǎn)速表或數(shù)字轉(zhuǎn)速表測(cè)量其實(shí)際轉(zhuǎn)速,當(dāng)出現(xiàn)轉(zhuǎn)速表的指示值與測(cè)得的實(shí)際轉(zhuǎn)速不一致時(shí),調(diào)節(jié)“轉(zhuǎn)速表校準(zhǔn)”電位器,使之一致。

    b、最高轉(zhuǎn)速整定;此整定方法就是對(duì)速度反饋量的調(diào)節(jié),將速度指令電位器順時(shí)針?lè)较蛘{(diào)節(jié)至最大,并調(diào)節(jié)“反饋量調(diào)節(jié)”電位器,使之轉(zhuǎn)速達(dá)到滑差電機(jī)的最高額定轉(zhuǎn)速(小容量為1250轉(zhuǎn)/分,大容量為1320轉(zhuǎn)/分)。

    4、運(yùn)行中,當(dāng)加入負(fù)載后發(fā)現(xiàn)轉(zhuǎn)速有周期性的擺動(dòng),可將輸出端(3)、(4)交換連接。

     

    電氣參數(shù):

     

    • 調(diào)速范圍125-1320轉(zhuǎn)/分
    • 控制電機(jī)功率0.55-40KW
    • 轉(zhuǎn)速變化率≤3%
    • 穩(wěn)速精度≤1%
    • 電源電壓AC220V
    • 勵(lì)磁電壓DC90V
    • 勵(lì)磁電流5A
    • 外形尺寸210×150mm
    • 安裝開(kāi)孔尺寸192×132mm
    • 航空插接線:

    (圖1

    電源220V

    電磁離合器

     測(cè)速發(fā)電機(jī)

    12

    34

    567

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