DSQC539 DC power module

The application of frequency converter energy-saving technology in coal mine mechanical equipment is beneficial for reducing equipment energy consumption and improving coal mine production efficiency. This technology plays an important role in coal mine production. The article introduces the application of the new Kerui frequency converter on the main ventilation fan of a certain coal mine, and the results show that using the new Kerui frequency converter for speed regulation and energy-saving transformation of the coal mine main ventilation fan equipment has good social and economic benefits. The automation level of coal mines has been further improved, and the production process of coal mines is safer and more reliable.

Check the appearance of the fan to see if the fan power cord is detached or damaged; Check if the fan blades are broken;

Listen to the fan for any abnormal sound;

If both of the above points are normal, please check the F8-48 (Cooling Fan Control) parameter and set it to 1. If the fan is not running, use a multimeter to check if the fan voltage is normal, usually around 24V. If it is not normal, there is a problem with the fan. Try replacing it with a new fan. If 24V is not normal, unplug the fan power cord and test 24V again. If it is still normal after unplugging, it indicates that there is a problem with the power board, If the power is unplugged but it works properly, there may be an internal short circuit in the fan.

Conclusion

In short, during the maintenance of high-voltage frequency converters in summer, attention should be paid to the temperature of the installation environment of the frequency converter, and the internal dust of the frequency converter should be regularly cleaned to ensure the smoothness of the cooling air path. Strengthen inspection and improve the surrounding environment of frequency converters, motors, and circuits. Check whether the wiring terminals are tightened to ensure the correct and reliable connection of all electrical components. Prevent unnecessary shutdown accidents from occurring.

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Contact person: KELLY

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4 digital inputs, 1 analog input, and 1 relay output.

Product specifications:

Starting torque: 180% at 3 Hz, 200% at 5 Hz (vector)

Carrier frequency: 1-15 KHz

Control method: SVPWM, V/F control, magnetic flux vector control

Output frequency: 0-650.00 Hz

Starting torque: 180% at 3 Hz, 200% at 5 Hz (flux vector)

Protection function: output short circuit, overcurrent/voltage, low voltage, motor overheating, IGBT overheating, grounding/leakage, communication abnormality protection

Cooling method: 0.4KW product natural cooling, other air cooling

Display functions: output frequency, output current, output voltage, output power, alarm recording (up to 12 sets), etc

LED light: frequency monitoring, voltage monitoring, current monitoring, motor operation indication, control mode indication, external operation panel indication

Surrounding temperature: -10~+50 ℃ (unfrozen)

Surrounding humidity: below 90% Rh (without condensation)

Storage temperature: -20~+65 ℃

Protection level: IP20

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