扬中LG变频器维修
用交流变频控制,效果极好。 安川变频器吊车、翻斗车类负载应用 吊车、翻斗车等负载转巨大且要平稳,正反频繁且要可靠。变频装置控制吊车、翻斗车满足这些要求 石化工厂采用变频调速和PLC控制焦化翻斗车,取得了较高可靠性和经济效益。安川变频器维修常见的开关电源损坏,通常由于开关电源的负载发生短路造成,在众多变频器的开关电源线路设计上,安川变频器做的比较成功。系列产品616G3采用两级的开关电源,类似于日本富士G5系列产品,先由级开关电源将直流母线侧500多伏的直流电压转变成300多伏的直流电压。然后再通过高频脉冲变压器的次级线圈输出5V、12V、24V等较低电压供变频器的控制板,驱动电路,检测电路等做电源使用。这些是安川变频器维修技巧中需要处理好地方。步骤/方法 安川变频器开关电源损坏:在第二级开关电源的设计上,安川变频器使用TL431可控稳压器件来调整开关管的占空比,从而达到稳定输出电压的目的。可以从输出侧查找故障,此外当发生无显示,控制端子无电压,DC12V,24V风扇不运转等现象时首先检查开关电源是否已损坏。 安川变频器SC—故障:IGBT模块损坏是引起SC故障报警的原因之一,此外驱动电路损坏也容易导致SC故障报警。安川在驱动电路的设计上,上桥使用了驱动光耦PC923,这是专用于驱动IGBT模块且带有放大电路的一款光耦;下桥驱动电路则采用光耦PC929,是一款内部带有放大电路、及检测电路的光耦。此外电机抖动,三相电流,电压不平衡,有频率显示却无电压输出,这些现象都有可能是IGBT模块损坏。IGBT模块损坏的原因有多种,首先是外部负载发生故障而导致IGBT模块的损坏,如负载发生短路,堵转等。其次驱动电路老化有可能导致驱动波形失真,或驱动电压波动太大而导致IGBT损坏,从而导致SC故障报警。 安川变频器OH—过热报警:过热是平时会遇到的一个故障。当遇到这种情况时,先检查散热风扇是否运转,观察机器外部就会看到风扇是否运转,此外对于30kW以上的机器,在机器内部会带有一个散热风扇,此风扇的损坏也会导致OH的报警。 安川变频器UV—欠压故障:当出现欠压故障时,首先检查输入电源是否缺相,假如输入电源正常,接着检查整流回路是否有故障,假如都没有问题,就需要看直流检测电路上是否有问题了。对于200V级的机器当直流母线电压低于190VDC,UV报警就要出现了;对于400V级的机器,当直流电压低于380VDC则故障报警出现。主要检测一下降压电阻是否断路。 安川变频器GF—接地故障:接地故障同样是常见的故障,在排除电机接地存在问题的原因外,可能发生故障的部分就是霍尔传感器了,霍尔传感器由于受温度,湿度等环境因数的影响,工作点容易发生飘移,导致GF报警。 安川变频器维修其它案例—故障现象:面板显示正常,可以启动,但输出电机振动很大,接着出现过电流停机。故障分析与维修:从故障分析,该变频器可以判断为输出缺相引起的电机振动,拆下机子测量6个触发电压正常,证明各路电源是好的,IGBT也没问题,但开机后测量发现有两路没有信号到IGBT,触发端电压一直保持在负9.5伏,接着在这一回路查出两个光耦已烧坏,更换新零件后,机子恢复正常运行。
VS-616F7A43P71A6,530V7AT43P705,VS-616F7A45P51A7,VS-606V7AT45P517,
VS-616F7A47P51A[KD]7,VS-606V7AT47P517,VS-616F7A40111A[KD]9,VS-616F7A40151A[KD]12,VS-616F7A40180A[KD]15,VS-616F7A40220A[KD]18,3VS-616F7A40300A[KD]22,676GL5
VS-616F7A40370A[KD]24VS-616F7A40450A[KD]30,VS-616F7A40550A[KD]34,
VS-616F7A40750A[KD]48,VS-616F7A40900A[KD]70,VS-616F7A41100A[KD]80,
VS-616F7A41320A[KD]92,VS-616F7A41600A[KD]103,VS-616F7A41850A129,3
VS-616F7A42200A149,VS-616F7A43000A203
VS-616G5,VS-616G7系列:
VS-616G5A20P41F4,VS-616G7A20P41C3,VS-616G5A20P71F5,VS-616G7A20P71C4,
VS-616G5A21P51F5,VS-616G7A21P51C5,VS-616G5A22P21F6,VS-616G7A22P21C5,
VS-616G5A23P71F7,VS-616G7A23P71C5,VS-616G5A25P51F9,VS-616G7A25P51C7,
VS-616G5A27P51F10,VS-616G7A27P51C8,VS-616G5A20111F14,VS-616G7A20111C12,
VS-616G5A20151F17,VS-616G7A20151C15,VS616G5A20180F24,VS616G7A20180C22,
VS-616G5A20220F26,VS-616G7A20220C24,VS616G5A20300F35,VS616G7A20300C26,
VS-616G5A20370F45,VS-616G7A20370C34,VS616G5A20450F52,VS616G7A20450C36,
VS-616G5A20550F61,VS-616G7A20550A46,VS-616G5A20750F99,VS616G7A20750A88,
VS616G5A20900F139,VS616G7A20900C124,VS616G5A21100F148,VS616G7A21100C134,
VS-616G5A40P41F4,VS-616G7A40P41C5,VS-616G5A40P71F5,VS-616G7A40P71C5
VS-616G5A41P51F6,VS-616G7A41P51C6,VS-616G5A42P21F6,VS-616G7A42P21C6,
VS-616G5A43P71F7,VS-616G7A43P71C8,VS-616G5A45P51F9,VS-616G7A45P51C9,
VS-616G5A47P51F(KD)9,VS-616G7A47P51C10,VS-616G5A40111F(KD)13,
VS-616G7A40111C13,VS-616G5A40151F(KD)16,VS-616G7A40151C16,
VS-616G5A40180F(KD)19,VS-616G7A40180C23,VS-616G5A40220F(KD)21,
VS-616G7A40220C25,VS-616G5A40300F(KD)26,VS-616G7A40300C33,
VS-616G5A40370F(KD)33,VS-616G7A40370C40,VS-616G5A40450F(KD)40,
VS-616G7A40450C47,VS-616G5A40550F(KD)51,VS-616G7A40550A55,
VS-616G5A40750F(KD)67,VS-616G7A40750A72,VS-616G5A40900F80,
VS-616G7A40900C92,VS-616G5A41100F(KD)91,VS-616G7A41100C95,
VS-616G5A41320F102,VS-616G7A41320A124,VS-616G5A41600F115,
VS-616G7A41600A146,VS-616G5A41850F141,VS-616G7A41850A181,
VS-616G5A42200F165,VS-616VS-616G7A42200A212,VS-616G5A43000F226,
VS-616VS-616G7A43000A289
VarispeeD E7系列:
CIMR-E7B20P4,CIMR-E7B20P7,CIMR-E7B21P5CIMR-E7B22P2,CIMR-E7B23P7,
CIMR-E7B25P5,CIMR-E7B27P5,CIMR-E7B2011,CIMR-E7B2015,CIMR-E7B2018,
CIMR-E7B2022,CIMR-E7B2030,CIMR-E7B2037,CIMR-E7B2045,CIMR-E7B2055,
CIMR-E7B2075,CIMR-E7B2090,CIMR-E7B2110,CIMR-E7B40P4,CIMR-E7B40P7,
CIMR-E7B41P5,CIMR-E7B42P2,CIMR-E7B43P7,CIMR-E7B44P0,CIMR-E7B45P5,
CIMR-E7B47P5,CIMR-E7B4011,CIMR-E7B4015,CIMR-E7B4018,CIMR-E7B4022
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
FR-F740-18.5K-CHT、FR-F740-22K-CHT
FR-F740-30K-CHT、FR-F740-37K-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-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
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
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
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
FR-F720-0.75K
FR-F720-1.5K