Rosemount罗斯蒙特 3051GP2A2B21AHR5
富士变频器维修技巧比较多，需注意的是日常要做好维护工作，比如车间的防尘、防潮，电柜内部保持恒温等，这样可以降低富士变频器的故障率。而维修专用工具的放置，同样需要专人保管，以此保证在操作变频器维修时能快速解决问题。富士变频器故障代码如下：
OH1散热片过热如冷却风扇发生故障,则变频器内部温度上升,保护动作.
OH2外部报警当控制电路端子连接制动单元制动电阻、外部热继电器等外部设备的常闭接点时，将按照这些接点的信号动作。
OH3变频器内过热
如变频器内通风散热不良，则变频器内部温度上升保护动作
DBH制动电阻过热如制动电阻刹车频率高，导致温度上升，为防止电阻烧毁，保护动作。
富士变频器故障代码OLU报警变频器过热载
这是变频器主电路半导体元件的温度保护，当变频器输出电流超过过载额定值时作。
OC1加速时过电流:电动机过电流,输出电路相间或对地短路,变频器输出电流瞬时值大于过电流检出值时,过电流保护功能动作。
富士变频器故障代码OC2报警减速时过电流
OC3恒速时过电流
EF对地短路故障检测变频器输出电路对地短路时动作
OU1加速时过电压由于电动机再生电流增加，使主电路直流电压达到过电压检出值时，保护动作。但是，变频器输入侧错误地输入过高的电压时，保护不动作。富士变频器维修免费在线咨询：
OU2减速时过电压
OU3恒速时过电压
LU欠电压电源电压降低，使主电路直流电压低到欠电压检出值以下时,保护功能动作.
Lin电源缺相如电源缺相,变频器将在电压不平衡的状态下运行,可能造成主电路整流二极管和滤波电容损坏.在这种情况下,变频器报警并停止运行.
富士变频器故障代码FUS报警DC熔断器断路当内部熔断器由于内部电路短路等原因造成损坏时，保护动作。
Er1存储器异常存储器发生数据写入错误时，保护动作。
Er2面板通信异常键盘面板和控制部份传送出现错误时，保护动作。
Er3CPU异常由于干扰等原因或CPU出错时，保护动作。
Er4选件通信异常选件卡使用出错时，保护动作。
Er5选件异常
Er6操作错误强制停止由强停止命令使变频器停止运行。
Er7输出电路自整定不良自整定时，如变频器与电动机之间接线开路或接线错误，则保护动作。
Er8RS485通信异常使用RS485通信时出现错误，保护动作
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