Variable frequency controller manufacturers tell you the common faults and treatment methods of inverter

Release Time:

2022-04-29 10:18

The inverter controller is an intelligent instrument that realizes the remote operation of the inverter. It remotely controls the start, stop, acceleration, deceleration, forward and reverse rotation of the inverter through the network, and displays the operating state information such as the working frequency and speed of the inverter in real time. However, during use, failures may also occur. The following inverter controller manufacturer, Shenzhen yingte chuang intelligent technology co., ltd, tells you the common faults and treatment methods of inverter.

Common faults and handling methods CP650 series: possible causes and solutions (indicated by>)

1. Variable frequency controller manufacturer-no display on power-on.

No or too low grid voltage> Check data input power

Switching power supply fault on inverter drive panel,> Check bus voltage

Disconnect and reinsert the 8-core and 40-core wires between the control board, driver board and keyboard

Inverter buffer resistance damage> return to the factory, seek factory service

Control board, keyboard failure> Return to factory for factory service

Rectifier bridge damage> return to factory, seek a factory to provide services

2. Variable frequency controller manufacturer-"HC" is always displayed on power-on ".

Poor connection between driver board and control board> Reinsert 8 core 28 core flat cable

Control panel related equipment damage> return to the factory, seek factory service

Or the motor line is short to ground \u003E returns to the factory to find the manufacturer's service.

Hall sensor failure> return to factory, seek service from manufacturer

The voltage of the power grid is too low> go back to the factory and find the service of the factory.

3. Variable frequency controller manufacturer-power-on display "Err23" alarm.

Measure the insulation between the motor and the output line using an insulation tester

If the inverter is damaged, return it to the factory and seek the services of the manufacturer.

4. The power-on frequency converter will display normally, and "HC" will be displayed after operation and shutdown will occur immediately.

The fan is damaged or blocked,> Replace the fan

If the peripheral control terminal wiring is shorted, remove the external short circuit

5. Error 14(igbt overheating) is the reported fault

Set carrier frequency too high \u003E Decrease carrier frequency (F0-15)

The fan system is damaged or the air duct is blocked> Replace the fan and clean the air duct

Inverter internal device damage (thermocouple or other)> Return to the factory and seek service from the manufacturer

6. The motor does not rotate after the inverter runs

Motor and motor line> reconfirm whether the connection between frequency converter and motor enterprise is correct

Inverter parameter setting error> restore factory parameters, reset the reasonable parameter group;

Check whether the encoder structure parameters are correctly set and the rated operating parameters of the motor system are correctly set, such as the rated frequency and rated speed of the motor; check whether the F0-01 (control management mode), F0-02 (operation development mode) and settings are correct; In V/F mode, adjust the F3-01 (torque increase) parameters under heavy load starting.

Poor connection between the drive board and the control board contact> Re-pull the plug connection to ensure that the connection is firm;

Drive board failure> Return to the factory and seek service from the manufacturer.

7.DI terminal failure.

Parameter setting errors> Check and reset F4 group related parameters

External signal error> Re-connect external signal line OP and 24V

jumper loose \u003E Reconfirm the OP and 24V jumpers and make sure they are tight.

Control board failure> return to factory, seek service from manufacturer

8. In the closed loop, vector control cannot increase the motor speed

Encoder fault> Replace the encoder disc and reconfirm the wiring

Encoder connection error or poor contact> Change pg card

PG Card Failure \u003E Replace the PG card or seek service from the manufacturer.

Drive board failure> Return to factory, seek factory service

Inverters often report over-current and over-voltage faults.

Motor parameters are not set to> Reset motor parameters or motor tuning

Improper acceleration and deceleration time> Set appropriate acceleration and deceleration time

Load Fluctuation> Return to Plant Service

10. Report "Err17" when starting up (or running)"

Soft start contactor is not closed> 1 check whether the contactor cable is loose

Check the contactor system for faults

Check whether the 24V power supply of the contactor is faulty.

Return to the factory and seek a manufacturer to provide services

11. When the motor decelerates or decelerates, the braking torque of the motor is insufficient

If the encoder is disconnected or the overvoltage stall protection is active in the speed sensor vector control mode (F0-01 = 1), check the encoder wiring. If brake resistance is configured, select Overpressure Stall Enable as Inactive (set F3-23 = 0) and turn off Overpressure Stall.