The maintenance and inspection of the frequency converter is the most prone to safety and quality problems in the use of the frequency converter. Therefore, the frequency converter manufacturer briefly introduces the maintenance and inspection methods and points for attention of the frequency converter as follows:
During maintenance, the operator must directly confirm the input power of the inverter. After the power supply is cut off, the electrolytic capacitor in the main circuit of the frequency converter may still be filled with residual high voltage.
You must wait and confirm the residual voltage in the capacitor before you can operate. Reference steps: cut off the power supply and wait for 5 ~ 10 minutes. After the charging indicator light goes out, use a multimeter to measure the DC filter capacitor voltage below 36V, and then repair and check the frequency converter;
When directly measuring the output voltage of the frequency converter, the rectifier AC voltmeter must be used. When using other general voltmeter or digital voltmeter to measure high pulse voltage, it is easy to cause misoperation or inaccurate display.
If you need to know about the inverter, you can contact our inverter manufacturer.