Motorola MVME-376亮點(diǎn)
1) 高精度的伺服PLC驅(qū)動(dòng)器，32位處理器，具備極高的運(yùn)算及控制精度，程序掃描時(shí)間可達(dá)1ms；
2) 除具備9400伺服驅(qū)動(dòng)器特性外，還兼容PLC功能。一臺(tái)9400伺服PLC可替代PLC+伺服驅(qū)動(dòng)器的組合，減少成本，性價(jià)比較高；
3) 可執(zhí)行公式生成的計(jì)算CAM曲線或者固定CAM曲線，CAM曲線之間可進(jìn)行在線切換；
4) 兼容第三方設(shè)備的Profibus DP、ProfiNet、EtherCAT等常用的通訊；
5) 外圍可擴(kuò)展IO端口。
6 結(jié)論
Motorola MVME-376驅(qū)動(dòng)器除具備高精度伺服控制的特點(diǎn)，兼具PLC的功能，支持ST、FBD等多種編程語言，還可以進(jìn)行外圍IO擴(kuò)展，具備較高的性價(jià)比。此外，還可以實(shí)現(xiàn)在線CAM曲線計(jì)算、固定CAM曲線與計(jì)算CAM曲線的切換等多種功能，對(duì)于灌裝設(shè)備技術(shù)水平的提升有著重要的實(shí)際應(yīng)用意義。在現(xiàn)代社會(huì)中，瓶灌裝生產(chǎn)線廣泛應(yīng)用于食品、醫(yī)藥、日化等行業(yè)，灌裝生產(chǎn)線水平的高低直接關(guān)系著產(chǎn)品的質(zhì)量和生產(chǎn)的效率。隨著經(jīng)濟(jì)的發(fā)展和科學(xué)技術(shù)的突飛猛進(jìn)，特別是自動(dòng)化、智能化技術(shù)的廣泛應(yīng)用，瓶灌裝機(jī)行業(yè)受益匪淺。目前，瓶灌裝機(jī)市場需求龐大，國內(nèi)外生產(chǎn)廠商眾多，競爭極為激烈。面對(duì)競爭激烈的市場，如何降低成本，提高生產(chǎn)線技術(shù)水平成為眾多企業(yè)的迫切需求。
為降低成本、提高技術(shù)水平，電子凸輪取代機(jī)械凸輪的使用成為一種趨勢(shì)。電子凸輪的使用極大地降低了生產(chǎn)成本。一般來說，一種電子凸輪對(duì)應(yīng)一種瓶灌裝產(chǎn)品，對(duì)于需要灌裝多種規(guī)格瓶子的生產(chǎn)線，需要在伺服驅(qū)動(dòng)器中預(yù)置對(duì)應(yīng)數(shù)目的電子凸輪曲線，但對(duì)于計(jì)劃外的瓶子灌裝則無能為力。Lenze公司推出了9400伺服PLC，采用在線電子凸輪曲線計(jì)算的方式解決了這個(gè)問題，本文以灌裝半固體物質(zhì)的瓶灌裝機(jī)為例，提出了電子凸輪CAM在線計(jì)算的解決方案。
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