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WOODWARD控制器9907-1200、8440-1750、5501-372、5453-750、8256-0809907-252、9905-0209905-068C505PARTS8440-1750

WOODWARD控制器9907-1200、8440-1750、5501-372、5453-750、8256-0809907-252、9905-0209905-068C505PARTS8440-1750

WOODWARD控制器9907-1200、8440-1750、5501-372、5453-750、8256-0809907-252、9905-0209905-068C505PARTS8440-1750

容济机电变频器的过流出现的就比较少。因为有保护装置的存在 五、过载 过载也是变频器跳动比较频繁的故障之一，平时看到过载现象我们其实首先应该分析一下到底是马达过载还是变频器自身过载，一般来讲马达由于过载能力较强，只要变频器参数表的电机参数设置得当，一般不大会出现马达过载。而变频器本身由于过载能力较差很容易出现过载报警。我们可以检测变频器输出电压。容济机电变频器简洁明了的页面在检测电路时十分方便。 六、输出不平衡 输出不平衡一般表现为马达抖动，转速不稳，主要原因：模块坏，驱动电路坏，电抗器坏等。 1565bc3ad10cba74830f281a1025f7dd.jpg 七、开关电源损坏 这是众多变频器最常见的故障，通常是由于开关电源的负载发生短路造成的，当发生无显示，控制端子无电压，DC12V，24V风扇不运转等现象时我们首先应该考虑是否开关电源损坏了。 八、SC故障 SC故障是安川变频器较常见的故障。IGBT模块损坏，这是引起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模块的带有放大电路的一款光耦，安川的下桥驱动电路则是采用了光耦PC929，这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。其次驱动电路老化也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。 九、GF—接地故障 接地故障也是平时会碰到的故障，在排除电机接地存在问题的原因外，最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，工作点很容易发生飘移，导致GF报警。这十点常见故障都是根据容济机电整理所得的，容济机电考虑到用户体验，容济机电在这方面做了很多。 bf3f1c4d754db7f98d82b2de35d70c9f.jpg 十、限流运行 在平时运行中我们可能会碰到变频器提示电流极限。对于一般的变频器在限流报警出现时不能正常平滑的工作，电压（频率）首先要降下来，直到电流下降到允许的范围，一旦电流低于允许值，电压（频率）会再次上升，从而导致系统的不稳定。容济机电温馨提示：在不超过预定限流值的情况下寻找工作点，并控制电机平稳地运行在工作点，并将警告信号反馈，依据警告信息我们再去检查负载和电机是否有问题。

 

二、过压

  过电压报警一般是出现在停机的时候，其主要原因是减速时间太短或制动电阻及制动单元有问题。

 

三、欠压

  欠压也是我们在使用中经常碰到的问题。主要是因为主回路电压太低（220V系列低于200V，380V系列低于400V），主要原因：整流桥某一路损坏或可控硅三路中有工作不正常的都有可能导致欠压故障的出现，其次主回路接触器损坏，导致直流母线电压损耗在充电电阻上面有可能导致欠压。还有就是电压检测电路发生故障而出现欠压问题。

ea82e1eb0c042901fd9bc4af2ececf5e.jpg 

四、过流

过流是变频器报警最为频繁的现象。

（1）重新启动时，一升bai速就跳闸。这是过电流十分严重的现象。主要原因有：负载短路，机械部位有卡住；逆变模块损坏；电动机的转矩过小等现象引起。

（2）上电就跳，这种现象一般不能复位，主要原因有：模块坏、驱动电路坏、电流检测电路坏。重新启动时并不立即跳闸而是在加速时，主要原因有：加速时间设置太短、电流上限设置太小、转矩补偿（V/F）设定较高。容济机电变频器的过流出现的就比较少。因为有保护装置的存在

 

 

五、过载

  过载也是变频器跳动比较频繁的故障之一，平时看到过载现象我们其实首先应该分析一下到底是马达过载还是变频器自身过载，一般来讲马达由于过载能力较强，只要变频器参数表的电机参数设置得当，一般不大会出现马达过载。而变频器本身由于过载能力较差很容易出现过载报警。我们可以检测变频器输出电压。容济机电变频器简洁明了的页面在检测电路时十分方便。

 

六、输出不平衡

  输出不平衡一般表现为马达抖动，转速不稳，主要原因：模块坏，驱动电路坏，电抗器坏等。

1565bc3ad10cba74830f281a1025f7dd.jpg 

七、开关电源损坏

  这是众多变频器最常见的故障，通常是由于开关电源的负载发生短路造成的，当发生无显示，控制端子无电压，DC12V，24V风扇不运转等现象时我们首先应该考虑是否开关电源损坏了。

 

八、SC故障

  SC故障是安川变频器较常见的故障。IGBT模块损坏，这是引起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模块的带有放大电路的一款光耦，安川的下桥驱动电路则是采用了光耦PC929，这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。其次驱动电路老化也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。

 

九、GF—接地故障

  接地故障也是平时会碰到的故障，在排除电机接地存在问题的原因外，最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，工作点很容易发生飘移，导致GF报警。这十点常见故障都是根据容济机电整理所得的，容济机电考虑到用户体验，容济机电在这方面做了很多。

 bf3f1c4d754db7f98d82b2de35d70c9f.jpg

十、限流运行

   在平时运行中我们可能会碰到变频器提示电流极限。对于一般的变频器在限流报警出现时不能正常平滑的工作，电压（频率）首先要降下来，直到电流下降到允许的范围，一旦电流低于允许值，电压（频率）会再次上升，从而导致系统的不稳定。容济机电温馨提示：在不超过预定限流值的情况下寻找工作点，并控制电机平稳地运行在工作点，并将警告信号反馈，依据警告信息我们再去检查负载和电机是否有问题。

 Jump on the power, this phenomenon generally can not be reset, the main reasons are: module bad, drive circuit bad, current detection circuit bad. Restart does not trip immediately but in acceleration, the main reasons are: acceleration time set too short, current upper limit set too small, torque compensation (V/F) set too high. The overcurrent of capacitive electromechanical frequency converter appears less. Because of the protection

Five, overload

Overload is one of the frequency converter to beat more frequent failure, usually see that overload phenomenon, we should first analyze the motor overload or overload, inverter itself in general motor due to overload ability is strong, as long as the motor parameter is set properly, the inverter parameter table generally appear unlikely to motor overload. The inverter itself is prone to overload alarm due to poor overload capacity. We can detect the output voltage of the converter. The simple and clear page of rongji electromechanical inverter is very convenient for detecting circuit.

Six, output imbalance

Output imbalance is generally shown as motor jitter, speed instability, the main reasons: module bad, drive circuit bad, reactor bad.

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Seven, switch power supply damage

This is the most common failure of many frequency converters. It is usually caused by short circuit of the load of the switching power supply. When there is no display, no voltage in the control terminal, DC12V, 24V fan does not operate and other phenomena, we should first consider whether the switching power supply is damaged.

8. SC faults

SC fault is a common fault of Yaskawa inverter. The IGBT module is damaged, which is one of the causes of SC fault alarm. In addition, drive circuit damage is also easy to cause SC fault alarm. In the design of the drive circuit, Yaskawa uses the drive optocoupler PC923 on the upper bridge, which is dedicated to drive IGBT module with an amplifier circuit, while yaskawa uses the drive optocoupler PC929 on the lower bridge, which is an internal amplifier circuit and a detection circuit. In addition, motor jitter, three-phase current, voltage imbalance, frequency display but no voltage output, these phenomena may be damaged IGBT module. There are many reasons for IGBT module damage. First, external load failure leads to IGBT module damage, such as load short-circuit, blocking, etc. Secondly, the aging of the driving circuit may also lead to the distortion of the driving waveform, or the fluctuation of the driving voltage is too large and lead to the damage of IGBT, thus leading to SC fault alarm.

GF -- Ground fault

Ground fault is usually encountered fault, in excluding the cause of the problem of motor grounding, the most likely part of the fault is the Hall sensor, hall sensor due to the impact of temperature, humidity and other environmental factors, the working point is easy to drift, resulting in GF alarm. These ten common faults are based on the rongji mechanical and electrical finishing, rongji mechanical and electrical considering the user experience, rongji mechanical and electrical in this regard to do a lot.

bf3f1c4d754db7f98d82b2de35d70c9f.jpg

Ten, limited flow operation

In normal operation we may encounter the frequency converter to indicate the current limit. For the general inverter can not work smoothly when the current limiting alarm appears, the voltage (frequency) should be lowered first until the current drops to the allowed range. Once the current is lower than the allowed value, the voltage (frequency) will rise again, resulting in the instability of the system. Rongji electromechanical warm tip: in the case of not exceeding the predetermined current limit value to find the working point, and control the motor to run smoothly at the working point, and the warning signal feedback, according to the warning information we go to check whether there is a problem with the load and motor.