The induction heating furnace debugging method is summarized, so that debugging is the safest!

After the induction heating furnace is installed, it is necessary to debug. We will debug the induction heating furnace according to the production requirements and environment to avoid the failure of the induction heating furnace caused by over-voltage or over-current. More induction furnace failures and treatment methods Please pay attention to the induction heating furnace. Frequently asked questions, however, how to debug induction furnaces? What is the debugging method? The electric furnace engineer sums up the debugging method, debugging principle and precautions of the induction heating furnace control panel, so that you can easily debug the induction heating furnace and stay away from the fault.

1. induction heating furnace control board overvoltage debugging method

1) Start the power supply, slowly increase the power potentiometer to make the intermediate frequency voltage reach 750v, adjust the overvoltage protection potentiometer W8 clockwise to make the overvoltage protection action, and the overvoltage indicator light.

2) The power potentiometer returns to zero, and the quenching device automatically resets the protection system. (The reset principle has been detailed in the previous chapter.) Turn the piezoelectric positioner W8 counterclockwise two to three times to release the limiter.

3) Restart the power supply so that the induction heating furnace voltage rises to 800v~820v, and slowly adjust the voltage leveler W8 clockwise to make the intermediate frequency power supply overvoltage protection action, and the overvoltage indicator light is on. Start again to verify that the overvoltage protection value is accurate.

4) Restore the limit voltage setting value and adjust the inverter angle potentiometer to make the ratio of the intermediate frequency voltage and the DC voltage about 1.4.

Note: The overvoltage limit voltage should be debugged under no-load conditions. These two adjustments are strictly prohibited under heavy load! Otherwise the consequences are serious.

2. Induction heating furnace power supply voltage limiting debugging method

1) Turn on the power, start the inverter, and slowly increase the power potentiometer to gradually increase the intermediate frequency voltage. When the voltage reaches 750v, the voltage level device W9 is adjusted clockwise, so that the intermediate frequency voltage does not rise with the rotation of the power potentiometer.

2) During the commissioning, the voltage of the intermediate frequency electric furnace may rise to less than 750v. Reason: The current limit action is pre-emptive. First adjust the current limiter Ws slightly counterclockwise to see if the intermediate frequency voltage has risen. If it cannot rise, stop the transfer.

3. Induction heating furnace power limiting current debugging method

1) Start the secondary power supply with no load, verify the basic starting performance of the power supply and whether the instruments are normal.

2) Fill the induction heating furnace with the charge, which is a large block, induction heating furnace to exchange the amount of charge. (The stove is full of material commonly known as: heavy furnace)

3) Restart the power supply slowly and see if the starting performance of the heavy furnace is good. If the intermediate frequency voltage is difficult to establish at startup, it is difficult to start. The ic signal of the potentiometer should be adjusted to increase the angle of the inverter.

4) Start slowly again. After the startup is successful, gradually increase the power (at this time, the current is slower). When the current reaches the rated value, the current limiter Ws is adjusted so that the current does not rise with the power potentiometer.

There may be several situations in this commissioning application;

1 If the over-current is not reached when the rated value is reached, the action is first protected. At this time, the over-current protection action value can be amplified by counterclockwise adjusting the flow potentiometer W7.

2 When the power potentiometer is turned to a large position, the current does not reach the rated value. The gap of the charge is large, and the medium frequency melting furnace is not caused by the fact that the small material is added in the gap of the large material to make the charge actually.

3 The inverter angle is small, causing the current not to go up. (This point is described in detail in the inverter working principle section) Just increase the 1C signal potentiometer potentiometer to increase the inverter angle.

4, induction heating furnace power overcurrent debugging method

1) Slowly start the power supply, the current reaches the rated value, and the over-current protection device W8 is adjusted to make the over-current protection action.

2) Release the current limiting potentiometer Ws and turn the overcurrent potentiometer W7 two to three times counterclockwise.

3) Start the power supply is 1.2 times the rated current, adjust the over-current potentiometer W7 to make the over-current protection action, and the over-current indicator light. This debugging is repeated twice, verifying that the overcurrent value is indeed about 1.2 times the rated current.

For safety reasons, please refer to the following introduction

1，Induction heating furnace control board debugging precautions

2，Induction heating furnace control panel debugging principle

3，Tools for preparation of induction heating furnace control panel debugging

4，Induction heating furnace protection safety debugging process

5，The induction heating furnace debugging method is summarized, so that debugging is the safest!