電磁(ci)加熱器(qi)多溫區控制(zhi)就是有(you)兩種：

第種：是臺(tai)電(dian)磁加熱(re)控(kong)制器控(kong)制多組線圈。

第二種:是臺(tai)設(she)(she)備使用多(duo)個(ge)電磁加(jia)熱控制(zhi)器(qi)(qi)分(fen)別控制(zhi)多(duo)個(ge)線圈。現在例如(ru)注(zhu)塑機(ji)(ji)，拉絲機(ji)(ji)，吹膜機(ji)(ji)，擠出機(ji)(ji)等機(ji)(ji)械(xie)設(she)(she)備，料(liao)管加(jia)熱部分(fen)都(dou)需要幾個(ge)不同溫度才能滿足生產，這時候(hou)就要使用到(dao)電磁加(jia)熱器(qi)(qi)多(duo)溫區來控制(zhi)。

第三(san)種：臺電(dian)磁加(jia)熱控(kong)制(zhi)器控(kong)制(zhi)多(duo)組(zu)線(xian)圈比較(jiao)少用，因(yin)為如(ru)果(guo)主機旦出現故障，整個幾個溫度都(dou)將無法(fa)加(jia)熱，影響正規生(sheng)產，而且維護起來也是(shi)比較(jiao)麻(ma)煩的(de)。

第四種(zhong)：多個電磁加熱控制(zhi)器分別控制(zhi)獨立線圈，這樣(yang)不但便于管(guan)理，而且加熱非常均勻(yun)，維護起來也(ye)是十(shi)分方便的。

普及下電(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)加熱(re)(re)(re)器的應(ying)用(yong)原(yuan)理(li)，電(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)加熱(re)(re)(re)是將380V50Hz交流電(dian)(dian)變成530VDC-560VDC50HZ直流電(dian)(dian)，再經過(guo)變頻控制技術逆變成5KHZ-30Hz的高頻交流電(dian)(dian)流，通過(guo)電(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)加熱(re)(re)(re)感應(ying)器與電(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)線圈組合轉換為高頻交變磁(ci)(ci)(ci)(ci)(ci)場(chang)，交變磁(ci)(ci)(ci)(ci)(ci)場(chang)的磁(ci)(ci)(ci)(ci)(ci)力(li)線作(zuo)用(yong)到金(jin)屬管道(dao)上(shang)產生鍋(guo)流，從(cong)而快速加熱(re)(re)(re)金(jin)屬管道(dao)。

電磁感應(ying)加(jia)熱器對(dui)比普通熱圈加(jia)熱方式有什么優勢(shi)？

1、耗(hao)電的95%轉化為工作熱能(neng)線圈損耗(hao)≈2%,控制單元損耗(hao)≈2%,緣隔熱層(ceng)可以將98%的能(neng)量保留在料筒上(shang)。

2、只加熱料筒，而螺桿保持冷卻。

3、消(xiao)除加熱(re)的慣性現象，升(sheng)溫(wen)降溫(wen)迅速。

4、電磁(ci)感(gan)應(ying)加(jia)(jia)熱器加(jia)(jia)熱無死角，整體(ti)料筒均勻加(jia)(jia)熱。

5、電磁線(xian)圈保(bao)持(chi)涼爽(shuang)，因(yin)此(ci)壽命超長。

電(dian)磁加熱器(qi)的電(dian)流(liu)小于5A時，控制器(qi)會自(zi)動檢測，如果連(lian)續(xu)超過三次檢測均小于5A時顯示窗(chuang)1會顯示“E1”并閃(shan)爍，“電(dian)流(liu)小”指示燈會閃(shan)爍提(ti)示，蜂(feng)鳴音每5秒(miao)短響次。解(jie)決方法：

1、確認線圈是否已正確連接(jie)。

2、檢(jian)測與低(di)頻(pin)互感(gan)器(qi)相連的相線是否正(zheng)常。

3、檢測低頻(pin)互感器是(shi)否開、短路(lu)。

4、檢測CN7連接(jie)是否正(zheng)常。

5、檢測(ce)C39、DB1、R30、C41、R19、C40、C42、是否短路(lu)。

6、檢測DB1、R20、R18是否開路(lu)。

7、檢測U5第18腳(jiao)是否接觸(chu)良(liang)好。

電(dian)磁(ci)加熱板(ban)(ban)的配件有哪(na)些？2P排線(xian)、10K熱敏電(dian)阻、吸收板(ban)(ban)1塊、風扇線(xian)、顯示盒、530V電(dian)源線(xian)（帶(dai)磁(ci)環(huan)）、高頻(pin)互感(gan)器。

電磁加(jia)熱(re)(re)器優(you)點電磁感應加(jia)熱(re)(re)優(you)勢：

1、非接觸電磁感應加(jia)熱。

2、耗電的 95% 轉化為工(gong)作熱能。線圈損耗 ≈ 2%, 控(kong)制單元損耗 ≈ 2%, 緣(yuan)隔熱層可以將98%的能量保留(liu)在料筒(tong)上。

3、只加熱料筒，而螺桿保(bao)持(chi)冷卻。

4、消除(chu)加(jia)熱(re)的慣性現象，升溫(wen)降溫(wen)迅(xun)速。

5、加熱(re)無(wu)死角，整體(ti)料(liao)筒均勻加熱(re)。

6、電磁線圈(quan)保(bao)持(chi)涼(liang)爽，因此壽命超長。

哪些因素(su)會導致電磁加熱(re)器發生故障？

：電(dian)(dian)(dian)磁(ci)加熱器電(dian)(dian)(dian)路(lu)設計(ji)不(bu)科學。目前(qian)，在大功(gong)率電(dian)(dian)(dian)磁(ci)加熱電(dian)(dian)(dian)路(lu)系統中，大部(bu)分廠家采(cai)用(yong)(yong)過去的(de)(de)傳統模擬3525或(huo)494電(dian)(dian)(dian)路(lu)，產(chan)生兩路(lu)或(huo)四路(lu)PWM，采(cai)用(yong)(yong)調(diao)(diao)頻方法(fa)驅動IGBT，改(gai)變諧振回電(dian)(dian)(dian)流大小(xiao)來達到調(diao)(diao)節功(gong)率大小(xiao)的(de)(de)目的(de)(de)，再(zai)采(cai)用(yong)(yong)4046進(jin)行鎖(suo)相控制(zhi)，在工業上加熱應用(yong)(yong)已經很普遍，技術也(ye)比(bi)較成(cheng)熟(shu)。但是，它的(de)(de)硬件電(dian)(dian)(dian)路(lu)復(fu)雜，所以大多體積(ji)龐大，也(ye)不(bu)便于生產(chan)和調(diao)(diao)試，特(te)別是容(rong)(rong)(rong)易由于所選(xuan)用(yong)(yong)的(de)(de)器件特(te)性差異，致使(shi)電(dian)(dian)(dian)源致性差，工作中生產(chan)的(de)(de)高強的(de)(de)電(dian)(dian)(dian)磁(ci)干(gan)擾時，鎖(suo)相或(huo)保護部(bu)分容(rong)(rong)(rong)易失靈，容(rong)(rong)(rong)易造成(cheng)故障。

二：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力器(qi)件布局(ju)不(bu)合(he)(he)理。在(zai)大功(gong)(gong)率(lv)(lv)(lv)工業電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁加(jia)熱(re)(re)主結構電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中，常為(wei)半橋(qiao)(qiao)(qiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)和全(quan)橋(qiao)(qiao)(qiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，通常2-25KW功(gong)(gong)率(lv)(lv)(lv)別采用(yong)(yong)半橋(qiao)(qiao)(qiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，全(quan)橋(qiao)(qiao)(qiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)可以實現20KW以上(shang)功(gong)(gong)率(lv)(lv)(lv)。般(ban)地，功(gong)(gong)率(lv)(lv)(lv)大于(yu)25KW后，線圈的高頻電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流比(bi)較(jiao)大，發熱(re)(re)比(bi)較(jiao)多，當(dang)主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力功(gong)(gong)率(lv)(lv)(lv)器(qi)件布局(ju)不(bu)合(he)(he)理時(shi)，可能會產生高強干(gan)擾(rao)，有可能使慮波電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、揩振電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)或IGBT模塊擊穿。為(wei)了用(yong)(yong)戶(hu)的安(an)裝安(an)全(quan)考慮，般(ban)把(ba)半橋(qiao)(qiao)(qiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)大功(gong)(gong)率(lv)(lv)(lv)定為(wei)15KW，降低IGBT模塊電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流應力，當(dang)功(gong)(gong)率(lv)(lv)(lv)大于(yu)20KW時(shi)，建議(yi)用(yong)(yong)戶(hu)選(xuan)擇全(quan)橋(qiao)(qiao)(qiao)主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)結構。當(dang)然(ran)，在(zai)特定的應用(yong)(yong)場合(he)(he)，需要加(jia)熱(re)(re)面積比(bi)小，功(gong)(gong)率(lv)(lv)(lv)密度比(bi)較(jiao)大時(shi)，我們合(he)(he)理科(ke)學(xue)地可以幫助用(yong)(yong)戶(hu)把(ba)半橋(qiao)(qiao)(qiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)安(an)全(quan)做到30KW。

電(dian)磁感應加(jia)熱(re)器不加(jia)熱(re)原因主要有(you)以下三點：

1、線(xian)路故(gu)障(zhang)，沒電供及。

2、元件(jian)損壞(huai)，查找(zhao)更換。

3、調(diao)整不當，重新調(diao)整適當數據。