Kerun inverter fault code U27?

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.

When the 24V fan power supply of the small-capacity (below) inverter is short-circuited, it will also cause an OC3 alarm, and the 24V fan power supply on the motherboard will be damaged, and other functions of the motherboard will be normal. If there is a "1, OC2" alarm and cannot be reset or the "OC3" alarm is displayed as soon as it is powered on, it may be that there is a problem with the motherboard; If the "OC3" alarm is displayed when the RUN button is pressed, the driver board is broken.

Inverter failure, like this, may be caused by unstable voltage.

Is the profit drive faulty? Another phase of this failure, why did this occur? I don't know much about it, and I won't fix it.

Is the profit inverter fault code U27? Of course it is, he's this number, the 127 number is this code, and he's the twenty-seven code.

Profit inverter fault number Yuoji, in fact, should it be this, it should be this, because it is not right.

Kerun inverter failure, I don't know what's going on in the second phase, you call ** to see the customer service.

If the Kerun inverter is out of order, it is still necessary to find a professional person to see it.

Generally speaking, I think that if there is a fault code in an inverter like this, you can restart it.

If the fault code of the profit inverter is used, it is generally necessary to know the specific fault of the inverter through the substitution function.

Summary. Dear, hello, glad to answer for you, Kerun inverter U-13 troubleshooting? Answer; The output is out of phase.

1. The lead wire from the inverter to the motor is abnormal, and the peripheral fault is eliminated. 2. When the motor is running, the three-phase output of the inverter is unbalanced, check whether the three-phase winding of the motor is normal and troubleshoot. 3. The driver board is abnormal.

4. The module is abnormal. There are the following steps:1

There is a disconnection between the output of the inverter and the motor: 1) Start normally, and test whether the three-phase output current is balanced with a clamp meter; 2) Check whether the output cable is disconnected from the motor; 2.The contactor main terminal contact at the rear end of the inverter is damaged or oxidized, and the relay output has been disconnected because the motor has not stopped, resulting in arc damage to the terminal; 3.

Motor damage: When the inverter is not electrified, disconnect the motor cable, and use the shake meter to detect whether the motor is open or abnormal; 4.Hall or cable abnormality:

Whether the socket is loose and whether the contact is good; whether the pins are offset; 5.Hall cable plugging error (switching): Confirm that the Hall cable phase sequence corresponds to one by one (U-U, V-V, W-W), and whether it is consistent with the driver phase sequence; 6.

If the driver board is abnormal, check whether the driver board control board has obvious broken or detached devices, or replace the driver board for debugging; The door operator is non-standard, and it is not connected to the motor, and it will also alarm.

Kerun inverter U-13 troubleshooting.

Hello, let you wait for a long time, is consulting information for your questions to answer, please be patient Dear, hello, happy to answer for you, Kerun Dajing inverter U-13 troubleshooting? Answer; The output is out of phase. 1. The lead wire from the inverter to the motor is abnormal, and the peripheral fault is eliminated.

2. When the motor is running, the three-phase output of the inverter is unbalanced, check whether the three-phase winding of the motor is normal and troubleshoot. 3. The driver board is abnormal. 4. The module is abnormal.

There are the following steps:1The inverter output to the motor has a broken wire:

1) Start normally, use a clamp meter to test whether the three-phase output current is balanced; 2) Check whether the output cable is disconnected from the motor; 2.The contactor main terminal contact at the rear end of the inverter is damaged or oxidized, and the relay output has been disconnected because the motor has not stopped, resulting in arc damage to the terminal; 3.Motor damage:

When the inverter is not electrified, disconnect the motor cable, and use the shake meter to detect whether the motor is open or abnormal; 4.Hall or cable abnormality: whether the connector is loose and whether the contact is good; whether the pins are offset; 5.

Hall cable plugging error (switching): Confirm that the Hall cable phase sequence corresponds to one by one (U-U, V-V, W-W), and whether it is consistent with the driver phase sequence; 6.If the driver board is abnormal, check whether the control board is obviously damaged or taken off, or replace the driver board and debug it carefully; The door operator is non-standard, and it is not connected to the motor, and it will also alarm.

If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress. If you feel that I am satisfied with the answer of Fu Lu, you can click on my avatar for one-on-one consultation. Finally, I wish you good health and a good mood!

Hello dear! The fault code U27 of Kerun inverter usually indicates that the DC voltage is too high alarm, which is caused by the DC voltage exceeding the rated range of the inverter. Here's why:

1.Abnormal external power supply voltage: When the power supply voltage connected to the inverter is too high or unstable, it may cause the DC voltage of the inverter to rise, which will cause the U27 fault code to report the line slip alarm.

2.Capacitor aging or damage: There are multiple capacitors inside the Kerun inverter, if these capacitors are aged or damaged during use, it may lead to the situation that the DC voltage is too high.

3.Motor failure: When the driven motor fails, it may resist in reverse, which in turn affects the operation of the inverter, resulting in excessive DC voltage.

The solution to the U27 fault code is as follows:1Check whether the voltage of the external power supply is normal and ensure its stability.

2.Check whether the capacitor inside the Kerun inverter is aging or damaged, and replace it in time if necessary. 3.

Check whether the driven motor is faulty, and repair or replace it in time if necessary.

Summary. Qinqin is happy to answer for you: the fault code U27 of Kerun inverter indicates that the capacitor is faulty, and this fault is caused by the following factors:

1.aging and damage of capacitors; 2.Poor contact of capacitor components; 3.

Capacitors are short-circuited and open-circuited internally. A capacitor is a device that stores and releases electrical charge to filter out electromagnetic interference and boost and buck and provide a smooth DC power supply. <>

<> Kerun inverter fault code U27?

Qinqin is happy to answer for you: the fault code U27 of Kerun inverter rental indicates that the capacitor is missing fault, which is caused by the following factors: 1

aging and damage of capacitors; 2.Poor contact of capacitor components; 3.The capacitor is internally disguised as a short circuit and an open circuit.

A capacitor is a device that stores and releases electrical charge to filter out electromagnetic interference and boost and buck and provide a smooth DC power supply. <>

<> try the following methods to fix the problem:1Inspect the capacitor and check for any visible damage.

If the capacitor is damaged or aged, it needs to be replaced in time. 2.Check for loose or broken connectors.

Check whether the connection of the capacitor assembly is in good condition. If there is a poor connection, reconnect the component. 3.

If neither of the above methods solves the problem, you can use a test device to perform a capacitor test to see if there is an internal open circuit or short circuit. <>

Summary. Kiss! Hello, a blessing, a warmth, a touch.

Have a grateful heart. Life is full of touching! Your question has been received, it will take a little time to type, please wait a moment and please do not end the consultation.

You can also take this time to provide more effective information so that I can better answer for you. Hope mine can solve your problem and sort out the answer for you right away, please wait a moment!

Kiss! Hello, a blessing, a warmth, a touch. Have a grateful heart.

Life is full of emotional impulses! Your question has been received, it will take a little time to type, please wait a moment and please do not end the consultation. You can also take this time to provide more effective information so that I can better answer for you.

I hope mine can solve your problem, and immediately sort out the answer for you, please wait for a while!

Hello, glad to answer for you. Kerun inverter U27 fault: Kerun inverter fault branch stuffy treatment U-02 U-02 inverter accelerated operation overcurrent Reason:

1. Whether the output circuit of the inverter is grounded or short-circuited; 2. Whether the connection between the motor and the inverter is too long; 3. There is no self-learning of motor parameters with vector control mode; 4. The acceleration time is too long or the grinding is short; 5. Manual torque improvement.

Do you have any other questions? I can go on and on for you to answer 3I hope this service can help you, you can click on my avatar to follow me, and if you have any questions in the future, you can consult me again, and look forward to serving you again.

Wishing you well; Have a good life and all the best! 4.If you are satisfied with my service, please give a thumbs up, and I wish you all the best!

Peace and joy <>

The Kerun inverter shows what is going on with the U-04.

Hello dear. We'll be happy to answer for you. U-04 Causes of overcurrent for constant speed operation of inverter:

1. Whether the output circuit of the inverter is grounded or short-circuited 2. Whether the connection between the motor and the inverter is too long, 3. The number of motor participants and vertical hands is not self-taught in the vector control mode; 4. The load is abruptly changed or abnormal; 5. The acceleration and deceleration time is set too short; 6. The grid voltage is low; 7. The inverter is selected to be small, and the countermeasures are: 1. Rewiring 2. Install reactors or output filters; 3. Self-learning of motor parameters. 4. Check the sudden change of load or reduce load; 5. When the acceleration and deceleration time of the fiber wheel is extended; 6. Check the input power supply; 7. Select the inverter with large power level.

I hope I can help my relatives, I wish my relatives good health and all the best!

The U-02 inverter accelerates the operation of overcurrent.

Reason: 1. Whether the output circuit of the inverter is grounded or short-circuited 2. Whether the connection between the motor and the inverter is too long.

3. The self-learning of motor parameters is not carried out in the vector control mode; 4. The acceleration time is too short; 5. The manual torque is lifted or the V F curve is not suitable; 6. The rotating motor is restarted; 7. The grid voltage is low; 8. There is a sudden load in the acceleration process; 9. The inverter selection is too small; Countermeasures: 1. Rewiring 2. Install reactors or output filters; 3. Self-learning of motor parameters.

4. Extend the acceleration time.

5. Adjust the V F curve setting, adjust the manual torque lifting amount or change to automatic torque lifting; 6. Set it to speed tracking and then start or wait for the motor to stop before starting.

7. Detect the input power supply 8. Cancel the sudden load 9. Select the inverter with large power level.