Qingxi Hailip frequency converter maintenance hotline

Qingxi Hailip frequency converter maintenance hotline

Dongguan Changping Juyou ElectromechanicalEquipment Maintenance Department specializes in repairing Mitsubishi servo drives, Panasonic servo drives, Yaskawa servo drives, Dongrong servo drives, Sanyo servo drives, Fuji servo drives, Delta servo drives, Omron servo drives, Fanuc servo drives, etc; MitsubishiPLCPanasonicPLCSiemensPLCOmronPLCWait; Various touch screens, frequency converters, industrial circuit boards, etc.

Provide on-site service near the company,Bringing you convenience. We have the advantages of short maintenance cycle, high repair rate, reasonable price, and no need for circuit diagrams, We have also repaired different types of circuit boards for multiple companies. Customers from outside the province can send the servo to be repaired to our company, and we will conduct testing on the day of receiving the goods and arrange for repairs as soon as possible. If the customer's machine is severely damaged and cannot be repaired, our company will not charge any fees. Welcome to consult and cooperate!

Qingxi Hailip frequency converter maintenance hotline

HailipTypical Fault Case Analysis and Maintenance Methods of Frequency Converter

Typical Fault Case Analysis and Maintenance Methods of HOLIP Inverter

1、 Core Fault Types and Case Analysis

1. ‌Overcurrent fault (OC/E001 category)‌

• ‌Abnormal loadMotor stalling or mechanical jamming, it is necessary to check whether the transmission components (such as bearings and couplings) are stuck610.

• ‌Improper parameter settingsThe acceleration time is too short (default F0-17/F0-18 is too low). Adjust the acceleration time to 5-15 seconds and perform motor parameter self-tuning510.

• ‌Hardware damage‌：

• IGBT module breakdown: Static measurement of P/N terminal resistance (normal>10k Ω). If there is a short circuit, the module needs to be replaced and the carbonization marks on the drive board need to be cleaned67.

• Current detection circuit offset: Check the output signal of the Hall sensor (within ± 10mA deviation), calibrate or replace the sensor710.

• Report "OC" code or E-series fault prompt during operation (such as E.XX), accompanied by severe motor vibration or shutdown56.

• ‌phenomenon‌：

• ‌Reasons and Handling‌：

2. ‌Overvoltage/undervoltage fault (OU/LU type)‌

• ‌Overvoltage (OU/E002)If the grid voltage exceeds the limit (>480V) or the braking unit fails, install a braking resistor and adjust parameter F3-24 (overvoltage suppression gain)510.

• ‌Undervoltage (LV/E12.01)Input power phase loss or aging of main capacitor (capacity<80% of nominal value), check the balance of three-phase input voltage, replace electrolytic capacitor58.

• ‌Typical Case‌：

3. ‌No display when powered on (HC/Er.XX)‌

• Measure the input terminal voltage (three-phase balance) and troubleshoot for broken wires or poor contacts8.

• Check the power output of the driver board switch (such as ± 15V), and replace the power chip or filter capacitor if there is any abnormality810.

• Check the resistance of the rectifier bridge (positive and negative difference) and replace the damaged rectifier module68.

• Abnormal bus voltage caused by input power not connected (missing grid voltage) or damaged rectifier bridge8.

• ‌trigger condition‌：

• ‌Maintenance steps‌：

4. ‌Module overheating (OH/E014)‌

• The cooling fan stops running or the air duct is blocked, clean the dust and test the fan speed (≥ 2000rpm)610.

• The carrier frequency is too high (default F0-15 ≥ 8kHz), reduce it to 2-6kHz to reduce switching losses510.

• ‌High frequency reasons‌：

2、 Standardized maintenance process

3、 High frequency misdiagnosis avoidance strategy

• ‌False input phase loss (E12.01~E12.05)Actually, the abnormal current is caused by a short circuit between the turns of the motor winding, and a megohmmeter needs to be used to detect the insulation resistance of the motor (≥ 1M Ω)78.

• ‌Misjudging brake failureIf the resistance deviation of the braking resistor is greater than 5% or the wiring is loose, calibrate the resistance value (such as 50 Ω± 2.5 Ω) and tighten the terminals510.

4、 Maintenance precautions

1. ‌Drive circuit compatibilityReplace the optocoupler (such as PC929) with the same parameters as the prototype (isolation voltage ≥ 2500V), and replace the drive power filter capacitor (47 μ F/25V) in pairs68.

2. ‌Cooling maintenance cycleClean the dust in the air duct every 3 months, and it is recommended to install auxiliary heat dissipation devices in high temperature environments610.

3. ‌Parameter Debugging SpecificationAfter maintenance, it is necessary to readjust the motor parameters (F1 group) to avoid overcurrent or insufficient torque caused by improper V/F curve settings