Analysis of electromagnetic interference faults during Yaskawa inverter maintenance: If there are interferences around the Yaskawa inverter, they will invade the inside of the inverter through radiation or power lines, causing the control loop to malfunction, causing abnormal operation or shutdown, and even damaging the inverter in severe cases. . It is especially necessary to take external noise suppression measures to eliminate interference sources. The specific solutions are:
First, shorten the wiring distance of the control loop as much as possible and separate it from the main line
Second, the Yaskawa inverter grounding terminal should be carried out according to regulations and cannot be used with electric welding or high-power power. Mixed use of equipment grounding
Third, a noise filter is installed at the input of the Yaskawa inverter to avoid interference introduced by the power line.
Analysis of faults caused by improper or untimely maintenance during Yaskawa inverter maintenance:
Some Yaskawa inverter faults are caused by improper maintenance or untimely maintenance by equipment operation and management personnel. Some inverters lack normal routine for a long time. Maintenance causes excessive dust in the inverter, accelerates the aging of components, and causes frequent failures.
Preventive measures and solutions include:
Strengthen the standardized use and management of frequency converters, establish a daily maintenance system for frequency converters, and set up dedicated personnel to be responsible for maintenance. The specific content includes recording operating data and fault records. Regularly measure the operating data of the inverter and motor, including the inverter output frequency, output current, output voltage, internal DC voltage of the inverter, radiator temperature, working environment temperature, humidity and other parameters, and compare them with reasonable data to facilitate early discovery. Hidden Faults If the inverter trips due to fault, be sure to record the fault code and the operating conditions of the inverter at the time of trip, so as to facilitate a detailed analysis of the cause of the fault.
. Strengthen daily inspection
It is best to check once every half month, check and record the three-phase output voltage of the inverter in operation, and pay attention to compare the balance between them, check and record the three-phase output current of the inverter , and pay attention to compare the balance between them, check and record the radiator temperature, the working environment temperature, check whether the inverter has abnormal vibration and sound, and whether the fan is operating normally.
. Strengthen the daily maintenance of Yaskawa inverters
Maintain the inverter once a quarter, remove dust and dirt inside the inverter in time, keep the inverter clean, and the operation panel is clean and bright. At the same time, carefully check whether there are any heating and discolored parts in the inverter, whether the damping resistor is cracked, whether the electrolytic capacitor is expanding, leaking, protruding explosion-proof holes, etc., whether there is any abnormality on the B board, whether there are any hot and yellow parts, etc.
. Strengthen the inverter maintenance knowledge training for Yaskawa inverter operators and managers, improve their on-site maintenance capabilities, and avoid failures caused by improper or untimely maintenance.
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