Shanghai ABB inverter maintenance

Shanghai
Inverter Repair Center
Welcome! ! !
Brief introduction
Hourly repair service, quick response testing. Free inspection, check the repair price first, and then carry out repairs after the user's approval
Well stocked and delivered quickly. All repaired inverters have been load tested and guaranteed
Circuit board level repairs are at preferential prices. Door-to-door service is available, fast and at an excellent price. Repairs include inability to start, weak start, running jitter, loss of excitation, overcurrent, overload, misalignment, output imbalance, encoder alarm, encoder failure, inaccurate position, etc. Sixi accessories are complete, The company has advanced testing equipment, a strong engineering team, and superb maintenance techniques that can quickly repair faulty products.
Maintenance consultation phone number
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Fax
Hand
Inverter
Hand
Inverter
Series
Low Price Promotion
Inverter
Series
Inverter
Hand
Inverter
Model
Inverter
Series
Brand new and unopened
Hand
Inverter
Series
Inverter
Hand
Inverter
Series
Good condition
Hand
Inverter
Series
Missing motherboard
Inverter
Output
Inverter
Series
Inverter
Inverter accessories
Inverter panel
Panel
Panel
Panel
Inverter operator
Operation panel
Inverter disassembly accessories
High power module
Inverter module
Inverter high power
Control board
Main control board
Inverter operation panel
Inverter fuse Drive
High-power special fuse
Inverter motherboard
Motherboard
Board
Inverter operator
Panel
Inverter
Motherboard
Control board frequency converter accessories
Series
Interface board/
Board frequency converter accessories
Panel
Operation panel
Operation panel in English
Inverter
Module
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Inverter maintenance
Common models
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Frequency converter repair
series
Frequency converters often encounter damage to the switching power supply. The inverter switching power supply uses a waveform generator integrated block with similar functions. Sudden changes in the operating voltage and damage to the load carried by the switching power supply often cause damage to the integrated block. When used for a long time , the electrolytic capacitor has also reached the end of its service life, and the use of filter capacitors has become the direct cause of damage to the switching power supply. During maintenance, the frequency converter rectifier bridge is often damaged. This is because the most compact three-phase full-bridge rectifier from International Rectifier Company is selected. Its size and load current are small, and its heat dissipation performance is poor. It will break down after a period of use. Damage will occur.
The probability of main control board failure is also quite high. There is a communication failure between the control panel and the main board. Main board failure occurs from time to time. It is difficult to repair such failures.
The Mitsubishi module was chosen. The probability of failure is relatively low. If the module is damaged, it can only be replaced, but the drive circuit must be completely normal before replacement.
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Frequency converter repair
Series
The most common failure of the frequency converter is damage to the thick film of the drive. This driving thick film already contains a driving circuit, and also includes short-circuit detection, module detection, over-current detection, etc., and has good protection functions.
High power modules are rarely damaged. If the driver thick film is damaged during maintenance, the thick film can only be repaired without accessories. Thick film components are all welded to ceramic sheets and dissipate heat very quickly. Be especially careful not to heat the soldering iron on the components for a long time. causing damage to the device. Due to limited use time,
the cooling fan may also malfunction. A common phenomenon is that after powering on, only a
buzzing sound
is heard, but the fan does not rotate. The fan coil of this type of axial fan And the bearings are fine most of the time, usually the deflection capacitor is faulty and can be restored to normal after replacement.
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Frequency Converter Maintenance
Series
The performance and quality of the frequency converter are relatively stable, but affected by the surrounding environment, improper parameter setting, and improper operation, it may cause damage to the frequency converter. causing damage to the device. Of course, natural damage is inevitable for every electrical product. Different from other series of products, the frequency converter adopts optical fiber communication, which greatly improves the communication time between boards. However, it may also cause such faults. , this kind of failure is closely related to fiber damage.
The fault is
a common fault in the inverter. Damage to the
board and/
board may cause this fault.
The switching power supply will also be damaged in the inverter. The fault mainly occurs on the switching tube. A short circuit of the switching tube will cause the power resistor used for current limiting to burn out.
Using an intelligent module, load failure and some problems during use can cause module damage.
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Frequency converter maintenance
Daily maintenance
Before powering on the frequency converter, the temperature and humidity of the surrounding environment should be detected. Excessive temperature will cause the frequency converter to overheat and alarm. In serious cases, it will Directly causing damage to the power components of the inverter and short-circuiting the circuit. Too humid air will cause a direct short circuit inside the inverter. When the inverter is running, pay attention to whether the cooling system is normal.