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過流故障

過流故障可分為加速、減速、恒速過電流。其可能是由于變頻器的加減速時間太短、負載發生突變、負荷分配不均，輸出短路等原因引起的。這時一般可通過延長加減速時間、減少負荷的突變、外加能耗制動元件、進行負荷分配設計、對線路進行檢查。如果斷開負載變頻器還是過流故障，說明變頻器逆變電路已環，需要更換變頻器。

過載故障

過載故障包括變頻過載和電機過載。其可能是加速時間太短，電網電壓太低、負載過重等原因引起的。一般可通過延長加速時間、延長制動時間、檢查電網電壓等。負載過重，所選的電機和變頻器不能拖動該負載，也可能是由于機械潤滑不好引起。如前者則必須更換大功率的電機和變頻器；如后者則要對生產機械進行檢修。

FR-F740-0.75K-CHT
FR-F740-1.5K-CHT、

FR-F740-2.2K-CHT
FR-F740-3.7K-CHT、

FR-F740-5.5K-CHT
FR-F740-7.5K-CHT、

FR-F740-11K-CHT
FR-F740-15K-CHT、

FR-F740-18.5K-CHT、

FR-F740-22K-CHT
FR-F740-30K-CHT、

FR-F740-37K-CHT
FR-F740-45K-CHT
FR-F740-55K-CHT
FR-F740-S75K-CHT
FR-F740-S90K-CHT
FR-F740-S110K-CHT
FR-F740-S132K-CHT
FR-F740-S160K-CHT
FR-F740-S185K-CHT
FR-F740-S220K-CHT
FR-F740-S250K-CHT

三菱E740變頻器維修型號：

FR-E740-0.4K-CHT
FR-E740-0.75K-CHT、

FR-E740-1.5K-CHT
FR-E740-2.2K-CHT、

FR-E740-3.7K-CHT
FR-E740-5.5K-CHT、

FR-E740-7.5K-CHT
FR-E740-11K-CHT、

FR-E740-15K-CHT

三菱A740變頻器維修型號：
FR-A740-0.75K-CHT、

FR-A740-1.5K-CHT
FR-A740-2.2K-CHT、

FR-A740-3.7K-CHT
FR-A740-5.5K-CHT、

FR-A740-7.5K-CHT
FR-A740-11K-CHT、

FR-A740-15K-CHT

FR-A740-22K-CHT
FR-A740-30K-CHT 、

FR-A740-37K-CHT
FR-A740-45K-CHT
FR-A740-55K-CHT
FR-A740-75K-CHT
FR-A740-90K-CHT

三菱D740變頻器維修型號：
FR-D740-0.4K-CHT、

FR-D740-0.75K-CHT
FR-D740-1.5K-CHT、

FR-D740-2.2K-CHT
FR-D740-3.7K-CHT、

FR-D740-5.5K-CHT
FR-D740-7.5K-CHT、

FR-A740-18.5K-CHT


三菱A720變頻器維修型號：
FR-A720-0.4K
FR-A720-0.75K
FR-A720-1.5K
FR-A720-2.2K
FR-A720-3.7K
FR-A720-5.5K
FR-A720-7.5K
FR-A720-11K
FR-A720-15K
FR-A720-18.5K
FR-A720-22K
FR-A720-30K
FR-A720-37K
FR-A720-45K
FR-A720-55K
FR-A720-75K
FR-A720-90K
三菱F720變頻器維修型號：
FR-F720-0.75K
FR-F720-1.5K
FR-F720-2.2K
FR-F720-3.7K
FR-F720-5.5K
FR-F720-7.5K
FR-F720-11K
FR-F720-15K
FR-F720-18.5K
FR-F720-22K
FR-F720-30K
FR-F720-37K
FR-F720-45K
FR-F720-55K
FR-F720-75K
FR-F720-90K
FR-F720-110K

FR-E720S-0.4K-CHT
FR-E720S-0.75K-CHT
FR-E720S-1.5K-CHT
FR-E720S-2.2K-CHT
FR-E720-0.4K
FR-E720-0.75K
FR-E720-1.5K
FR-E720-2.2K
FR-E720-3.7K
FR-E720-5.5K
FR-E720-7.5K
FR-E720-11K
FR-E720-15K
-[ FR-D720系列, 3相 220V 50HZ 等級, 簡易型 (150% 60秒 過載能力) ] -
FR-D720-0.4K
FR-D720-0.75K
FR-D720-1.5K
FR-D720-2.2K
FR-D720-3.7K
FR-D720-5.5K
FR-D720-7.5K
FR-F740-S280K-CHT
FR-F740-S315K-CHT
FR-F740-S355K-CHT
FR-F740-S400K-CHT
FR-F740-S450K-CHT
FR-F740-S500K-CHT
FR-F740-S560K-CHT
FR-F740-S630K-CHT
FR-A740-110K-CHT
FR-A740-132K-CHT
FR-A740-160K-CHT
FR-A740-185K-CHT
FR-A740-220K-CHT
FR-A740-250K-CHT
FR-A740-280K-CHT
FR-A740-315K-CHT
FR-A740-355K-CHT
FR-A740-400K-CHT
FR-A740-450K-CHT
FR-A740-500K-CHT
FR-A740-0.4K-CHT
FR-A740-0.75K-CHT
FR-A740-1.5K-CHT
FR-A740-2.2K-CHT
FR-A740-3.7K-CHT
FR-A740-5.5K-CHT
FR-A740-7.5K-CHT
FR-A740-11K-CHT
FR-A740-15K-CHT
FR-A740-18.5K-CHT
FR-A740-22K-CHT
FR-A740-30K-CHT
FR-A740-37K-CHT
FR-A740-45K-CHT
FR-A740-55K-CHT
FR-A740-75K-CHT
FR-A740-90K-CHT