描述

加速時間的設(shè)定

異步電動機在額定頻率和電壓下直接啟動時，啟動電流很大。使用變頻器后，由于其輸出頻率可以從很低時開始，頻率上升的快慢可以任意設(shè)定，從而可以有效地將啟動電流限制在一定范圍內(nèi)。

從減小電動機啟動電流的角度來說，加速時間應(yīng)設(shè)定得長一些，但若加速時間過長會影響系統(tǒng)的效率。

2．減速時間的設(shè)定

變頻器減速時間有兩種：一種是工作頻率從基本頻率降到0Hz所需的時間；另一種是工作頻率從最高頻率降低到0Hz所需的時間。所有變頻器中，減速時間的設(shè)定范圍和升速時間相同。

友情提示：

變頻器加速時間設(shè)定的基本原則是：在電動機啟動電流不超過允許值的前提下盡可能地縮短加速時間。設(shè)定減速時間考慮的主要因素是拖動系統(tǒng)的慣性，一般情況下，慣性越大，設(shè)定的減速時間越長。
歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計算機控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列

本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

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