西門子全新一代標準變頻器MicroMaster440

功能強大，多面手，應用廣泛

----MicroMaster440是全新一代可以廣泛應用的多功能標準變頻器。它采用高性能的矢量控制技術，提供低速高轉矩輸出和良好的動態特性，同時具備*的過載能力，以滿足廣泛的應用場合。創新的BiCo（內部功能互聯）功能有*的靈活性。

主要特征

• 200V-240V ±10%，單相/三相，交流，0.12kW-45kW；
• 380V-480V±10%，三相，交流，0.37kW-250kW；
• 矢量控制方式，可構成閉環矢量控制，閉環轉矩控制；
• 高過載能力，內置制動單元；
• 三組參數切換功能。

控制功能

• 線性v/f控制，平方v/f控制，可編程多點設定v/f控制，磁通電流控制免測速矢量控制，閉環矢量控制，閉環轉矩控制，節能控制模式；
• 標準參數結構，標準調試軟件；
• 數字量輸入6個，模擬量輸入2個，模擬量輸出2個，繼電器輸出3個；
• 獨立I/O端子板，方便維護；
• 采用BiCo技術，實現I/O端口自由連接；
• 內置PID控制器，參數自整定；
• 集成RS485通訊接口，可選PROFIBUS-DP/Device-Net通訊模塊；
• 具有15個固定頻率，4個跳轉頻率，可編程；
• 可實現主/從控制及力矩控制方式；
• 在電源消失或故障時具有"自動再起動"功能；
• 靈活的斜坡函數發生器，帶有起始段和結束段的平滑特性；
• 快速電流限制（FCL），防止運行中不應有的跳閘；
• 有直流制動和復合制動方式提高制動性能。

保護功能

過載能力為200％額定負載電流，持續時間3秒和150％額定負載電流，持續時間60秒； 過電壓、欠電壓保護； 變頻器、電機過熱保護； 接地故障保護，短路保護； 閉鎖電機保護，防止失速保護； 采用PIN編號實現參數連鎖。

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