PROSOFT MVI46-MBP模塊ProSoft Technology 專業為大型自控產品供應商，如 Rockwell Automation 和 Schneider 電氣等，開發通訊解決方案。
PROSOFT MVI46-MBP模塊
PROSOFT MVI46-MBP模塊
造成三菱變頻器過電流故障的原因有很多，應該根據實際情況進行分析。如果找對根源，然后對根據故障情況對三菱變頻器進行維修，一般都可以解決。電機電纜連接著變頻器和電機。那就從變頻器側和電機側分別進行分析。
1、首先是來自變頻器側的影響。
變頻器側可能造成三菱變頻器過電流的常見原因有：
加速時間太短。此時所需要的電機轉矩就越大，轉矩與電流成正比，所以電流也很大。適當延長加速時間。
提升功能。如果在V/f控制時，起動過程中，電壓提升過高，也可能造成過電流。適當降低電壓提升值。
PID參數不合適。過高的動態響應，可能造成過電流。延長濾波時間，減P加I。
2、其次是來自電機側的影響。
電機側可能造成變頻器過電流的常見原因有：
電機電纜對地短路。電纜絕緣不好，有破皮。可以用搖表對電纜絕緣進行檢測，以確認電纜質量。
電機堵轉。此時變頻器會嘗試使用更大的轉矩讓電機轉動，可能造成過電流故障。
3、zui后是硬件問題。
如果變頻器內部的電流檢測機構工作不正常，或者CPU處理機制出了問題，這些都不是設參數就能解決的，需要報修。
如果變頻器與電機電流不匹配，也可能造成過電流故障。比如小變頻器帶大電機，或者銘牌參數寫錯了，都可能造成過電流故障。
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