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The top 10 common faults are as follows:
1. Overcurrent. Overcurrent is the most frequent phenomenon of frequency converter alarms.
1. Phenomenon. 1) When restarting, it trips as soon as the speed is raised. This is a very serious phenomenon of overcurrent. The main reasons are: short circuit of load, stuck mechanical parts; The inverter module is damaged; The torque of the motor is too small.
2) Jump when power on, this phenomenon generally cannot be reset, the main reasons are: the module is bad, the drive circuit is bad, and the current detection circuit is bad. The main reasons for restarting are as follows:
The acceleration time is set too short, the upper current limit is set too small, and the torque compensation (V f) is set too high.
Inverter heat dissipation Troubleshooting, maintenance and repair Details.
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2. Overvoltage. The overvoltage alarm generally appears when the machine is stopped, and the main reason is that the deceleration time is too short or there is a problem with the braking resistance and braking unit.
3. Undervoltage. Undervoltage is also a problem that we often encounter in use. The main reason is that the main circuit voltage is too low (200V for 220V series and 400V for 380V series), and the main reason: rectifier bridge.
A circuit is damaged or thyristor.
Abnormal work in the three circuits may lead to the occurrence of undervoltage faults, followed by the main circuit contactor.
Damage, resulting in DC bus voltage loss on the charging resistor, may lead to undervoltage. There is also the problem of undervoltage due to the failure of the voltage detection circuit.
Fourth, overheating. Overheating is also a relatively common fault, the main causes: the surrounding temperature is too high, the fan stalls, and the temperature sensor.
Poor performance, motor overheating.
Fifth, the output is unbalanced.
The output imbalance is generally manifested as motor jitter and unstable speed, the main reasons: bad module, bad drive circuit, reactor. Bad, etc.
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Work haha, divide and combine.
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Summary. <> pro
Hello, I'm glad to answer for you. The E04 is one of the inverter faults** and is usually expressed as a motor stall alarm. This can be due to the following reasons:
1.The supply voltage is abnormal or there is a phase sequence missing. 2.
The output current exceeds the set value. 3.The sensor is abnormal or damaged.
4.Motor failure. 5.
Feedback lines, control lines, or input signals are abnormal.
Inverter fault**e04
Hello, I'm glad to answer for you. The E04 is one of the inverter faults** and is usually expressed as a motor stall alarm. This can be caused by mass burial due to:
1.The power supply voltage is abnormal or there is a lack of phase inspection imitation ant sequence. 2.
The output current exceeds the set value. 3.The sensor is abnormal or damaged.
4.Motor failure. 5.
Feedback lines, control lines, or input signals are abnormal.
Kiss, the solution to this problem is as follows:1Check whether the supply voltage and phase sequence are in full swing.
2.Set the appropriate output current protection. 3.
Check the connection and status of the sensor. 4.Check the status of the motor itself.
5.Check the connection and status of the anti-crack lease feeder line, control line, or input signal.
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The fault information of E014 is the output phase loss. 1. Users need to check whether the motor cable is open by themselves. 2. The inverter fault cannot be solved by the user by himself, and external cooperation is required, generally for the detection loop fault or drive loop fault.
Compared with the V F control, the macro pressure vector control of the electric peifeng is very advantageous at low speed, and the dynamic characteristics of the transmission can be significantly improved. In addition, because the control system can better estimate the load torque and give the vector values of voltage and current, the voltage vector control can also obtain a good static characteristic compared to the case of scalar control (only the value of the base absolute size).
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1. The load of the pump is too large, exceeding the frequency conversion protection value, the treatment method is to check how much the current is displayed when the frequency conversion is running, press the shift button to view, press the A light to see if the current on the pin beat display screen exceeds the rated current of the frequency conversion, and the display value exceeds the rated value, indicating that the frequency conversion selection is small, and it is recommended to increase the frequency conversion power. 2. Check the load of the water pump, the pump will burn out and there will be excessive current frequency conversion protection, you can disconnect the load of the water pump, let the frequency conversion run without load, and whether the frequency conversion is normal. 3. The water pump lacks phase, and the loss type auspicious output is unbalanced, resulting in excessive current. Rent eggplant.
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Summary. 1.If there is no wrong wire, it is the sensor or remote pressure gauge is broken and needs to be replaced.
Operation steps: press the stop button first, then press the menu key, display e0, press the OK key, display, then press the upper button to adjust, press the OK key, and the display is 9 kg), press the upper button to change this value to be higher than the pressure you set (for example, set the pressure to 10 kg, then adjust this number to 12 or 13 kg or something like that). Then press the OK button to display, press the menu button twice to go back, and then press the run button to try it out.
2.If you can do it after the first step, it's OK, if it still doesn't work, and it still displays e024 when it is running, then perform the following steps: press the stop button first, and then remove the water pressure of the pipe network, and then compare the pressure gauge pressure of the pipe network and the feedback pressure on the inverter (you can see it by pressing the shift view button all the time, and the display is like this, the first one is your set pressure, and the second one.
Inverter E042 alarm.
1.Let's see if the setting is too small, if yes, adjust it up, if not, Wang Xiang will see if there is a problem with the wiring, if there is no wrong wire, it is the sensor or the remote pressure gauge is broken, and it needs to be replaced. (Procedure:.)
Press the stop button first, then press the menu button to display e0, press the OK button, display, then press the up button to adjust, press the OK button, and the display is 9 kg), press the up button to change this value to be higher than the pressure you set (for example, set the pressure to 10 kg, then adjust this number to 12 or 13 kg or something). Then press the OK button, display, press the menu button twice to go back, and then press the run button to try it. 2.
If you can do it after the first step, it's OK, if it still doesn't work, and it still displays e024 when it is running, then perform the following steps: press the stop button first, and then remove the water pressure of the pipe network, and then compare the pressure gauge pressure of the pipe network and the feedback pressure on the inverter (you can see it by pressing the shift view button all the time, and the display is like this, the first one is your set pressure, and the second one.
The latter one is the actual pressure fed back by the pipe network) If there is no water on the Nasan Zhengbu surface in the pipe network, Dong Qingshi will still appear -16 and other numbers, that is, the pipe network has no water pressure, but there is still pressure when the feedback is received, that is, the sensor or remote pressure gauge is broken and needs to be replaced).
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Summary. Hello dear and happy to answer your <>
The fault of inverter E-09 is the lack of phase of the input power supply or the abnormality. The method of maintenance of the inverter power supply side is still very simple, use the multimeter to detect the three-phase voltage to see if the input power supply is normal, and detect whether the terminal is loose, burned, short circuit, etc. on the motor side, in one is whether the connecting cable is disconnected, and the common phase loss fault generally occurs on the first cable, especially in the cable chain, due to the back and forth drag for the harder cable may appear internally disconnected, you can choose the flexible cable dedicated to the drag chain.
What is the fault of the inverter E-09.
Hello dear and happy to answer your <>
The fault of the inverter E-09 is the lack of phase of the input power supply or the abnormal shouting of renting dates. The method of maintenance of the power supply side of the inverter is still very simple, use the multimeter to detect the three-phase voltage to check whether the input power supply is normal, and detect whether the terminal is loose, burned, short circuit, etc., on the motor side, whether the connection cable is disconnected, the common phase loss fault generally occurs on the first cable, especially in the cable chain, due to the back and forth drag for the harder cable may appear internally disconnected, you can choose the type of stupid drag chain special flexible cable.
Hello to the kiss Kai, the expansion for you is <> below
The input phase is missing, and the general key needs to check the installation and wiring of the input line to detect whether the three-phase voltage is the same. Generally fine. I have encountered a special article Zen shed situation, that is, the voltage measurement is normal, but can not be loaded, and the switch is missing phase after loading, so pay attention to it.
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Summary. Dear, I'm glad to answer for you, the reason for the appearance of the inverter E-09 is: 1
Transmission lines or power supplies are damaged, and transmission lines or power supplies may be short-circuited or damaged, resulting in unstable voltage or inability to input the inverter normally. This results in a loss of phase in the output, making it impossible for the drive to function properly. 2.
Rectifier circuit failure, rectifier circuit rectifier, three-phase bridge components or lines may fail, resulting in input voltage instability or distortion, and then cause inverter output phase loss. 3.The output port is faulty, and the wiring in the output port of the inverter is loose or the contact is poor, resulting in the failure of the output phase, and then the output phase loss fault.
4.Faulty controllers, if the controller is damaged or incorrect, can cause the inverter output to be out of phase. The controller may incorrectly judge that there is a problem with an output stage, causing the output phase to fail.
5.Wrong parameter setting, incorrect setting of some parameters of the inverter, over-current protection, short-circuit protection, etc., will lead to the occurrence of output phase loss fault. <>
What is the fault of the inverter E-09.
Dear, I'm glad to answer for you, the reason for the appearance of the inverter E-09 is: 1The transmission line or power supply may be short-circuited or damaged, resulting in unstable voltage or inability to input the inverter normally.
This results in a loss of phase in the output, making it impossible for the drive to function properly. 2.Rectifier circuit failure, rectifier circuit rectifier, three-phase bridge components or lines may fail, resulting in input voltage instability or distortion, and then cause inverter output phase loss.
3.The output port is faulty, and the wiring in the output port of the inverter knows that the belt bridge is loose or in poor contact, resulting in the failure of the output phase, and then causing the output phase loss fault. 4.
Faulty controllers, if the controller is damaged or incorrect, can cause the inverter output to be out of phase. The controller may incorrectly judge that there is a problem with an output link, and the output phase will fail. 5.
Wrong parameter setting, incorrect setting of some parameters of the inverter, over-current protection, short-circuit protection, etc., will lead to the occurrence of output phase loss fault. <>
<> kiss, to expand you, the solution of the inverter E-09 is: hold the ruler reputation 1Check the motor, the inverter E-09 error is usually caused by the failure of the motor section line.
Please check that the motor has been overhauled, regularly maintained, and check if the motor is operating properly. 2.Inspect the cables, check that the cables are properly connected, and that the cable glands are loose or damaged.
If the cable gland is loose or damaged, it needs to be repaired or replaced in time. 3.Check the inverter parameters, please check whether the inverter parameters are set correctly.
If the inverter parameter setting is incorrect, it will cause the motor to run abnormally. <>
The principle of inverter (English variable-frequency drive, referred to as VFD) is a power control equipment that uses the principle of frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the working power supply of the motor. The power supply used is divided into AC power supply and DC power supply, and the general DC power supply is mostly obtained by AC power supply through transformer voltage transformation and rectification filtering. AC power accounts for about 95% of the total power supply used by people.
For the OC alarm of large current in a short time, in general, there is a problem with the current detection loop of the drive board, and the module may also have been impacted (damaged), and it is possible that the fault will continue to occur after resetting, and the reasons are basically the following situations: the motor cable is too long, the output leakage current caused by the critical cable selection is too large, or the arc effect occurs when the load current is increased due to the loosening of the output cable joint and the damage to the cable. >>>More
The fault adjustment mode of SV inverter is generally input by the optocoupler to the MCU alarm signal, and the input side (some of which are the output side) of the optocoupler can be short-circuited to shield the fault alarm. >>>More
Stalled. See if the motor is spinning too slowly and the current is not too large. >>>More
Look at the manual, there is a fault input point, and the fault will be reported when it is connected!