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搜狐騰訊新浪人民網(wǎng)-雅虎科技財(cái)經(jīng)網(wǎng)21cn齊魯網(wǎng)pchomecio時(shí)代c114和訊科技驅(qū)動(dòng)之家價(jià)值中國(guó)中國(guó)電子銀行網(wǎng)techwebit時(shí)代周刊中國(guó)艾瑞網(wǎng)搜狐企業(yè)郵箱慧聰電子網(wǎng)視頻創(chuàng)投-億邦動(dòng)力網(wǎng)安卓機(jī)鋒網(wǎng)邁點(diǎn)網(wǎng)驅(qū)動(dòng)中國(guó)家緣網(wǎng)物聯(lián)中國(guó)華強(qiáng)北電腦網(wǎng)中國(guó)家電網(wǎng)91助手it之家軟信網(wǎng)中搜資訊蜂鳥(niǎo)網(wǎng)產(chǎn)品：plc/pac工控機(jī)變頻器伺服與運(yùn)動(dòng)機(jī)械傳動(dòng)傳感器自動(dòng)化軟件人機(jī)界面工業(yè)以太網(wǎng)工業(yè)安全電力電子低壓電器dcs嵌入式電機(jī)機(jī)器人執(zhí)行機(jī)構(gòu)機(jī)器視覺(jué)scada儀器儀表現(xiàn)場(chǎng)總線測(cè)控通信電源機(jī)柜箱體
隨著西門子變頻器的大力推廣后以及用戶對(duì)西門子變頻器的口碑傳播后，使得西門子變頻器在市場(chǎng)上受到群眾的大力追捧，不過(guò)用戶都會(huì)根據(jù)自己的實(shí)際工藝要求和運(yùn)用場(chǎng)合選擇不同類型的西門子變頻器，那么在選擇西門子變頻器時(shí)，選擇者應(yīng)該注意些什么問(wèn)題呢？選擇西門子變頻器應(yīng)該從哪些方面進(jìn)行選擇呢？本文將給大家一一講解。
對(duì)于這個(gè)問(wèn)題，我們需要從不用的角度進(jìn)行分析和選擇。1、從變頻器負(fù)載特性上面進(jìn)行選擇
一般從負(fù)載特性進(jìn)行選擇的，都是類似于吹風(fēng)機(jī)等一下電氣，那么對(duì)這類型的，建議選擇西門子變頻器的mmv/mdv、mm420/mm440。
2、實(shí)際電動(dòng)機(jī)電流值作為變頻器選擇的依據(jù)
應(yīng)充分考慮變頻器的輸出含有豐富的高次諧波，會(huì)使電動(dòng)機(jī)的功率因數(shù)和效率變差。因此，用變頻器給電動(dòng)機(jī)供電與用工頻電網(wǎng)供電相比較，電動(dòng)機(jī)的電流會(huì)增加10%而溫升會(huì)增加20%左右。所以在選擇電動(dòng)機(jī)和變頻器時(shí)應(yīng)考慮到這種情況，適當(dāng)留有余量，以防止溫升過(guò)高，影響電動(dòng)機(jī)的使用壽命。
3、考慮西門子變頻器的緊湊型
推薦SINAMICS G120C緊湊型變頻器，在許多方面為同類變頻器的設(shè)計(jì)樹(shù)立了典范。包括它緊湊的尺寸，便捷的快速調(diào)試，簡(jiǎn)單的面板操作，方便友好的維護(hù)以及豐富的集成功能都將成為新的標(biāo)準(zhǔn)。
我們?cè)趤?lái)看看對(duì)于選擇西門子變頻器我們應(yīng)該注意那些事項(xiàng)呢？
1、變頻器若要長(zhǎng)電纜運(yùn)行時(shí)，此時(shí)應(yīng)該采取措施抑制長(zhǎng)電纜對(duì)地耦合電容的影響，避免變頻器出力不夠。所以變頻器應(yīng)放大一、兩擋選擇或在變頻器的輸出端安裝輸出電抗器。
2、當(dāng)變頻器用于控制并聯(lián)的幾臺(tái)電動(dòng)機(jī)時(shí)，一定要考慮變頻器到電動(dòng)機(jī)的電纜的長(zhǎng)度總和在變頻器的容許范圍內(nèi)。如果超過(guò)規(guī)定值，要放大兩擋來(lái)選擇變
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DB-10-2-52/315Y
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DB-10-2-52/315Y
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Lamb-Ametek #116158-01 36V 5.7 2 Stage Vacuum Motor
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AMETEK HUNTER SPRING FORCE GAUGE LO-1M 16 OUNCES
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DB-10-2-52/315Y
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