The operation of the machine relies on variable frequency drives for continuous adjustments. The most commonly used drives are servo variable frequency drives and numerical control variable frequency drives. Just like any equipment, servo variable frequency drives can also encounter faults, which would naturally require maintenance.
For safety reasons, we must first turn off the machine's power before proceeding with the treatment. After all, the maintenance of the inverter is not just about fixing it, but about doing so correctly and safely. Therefore, remember to always disconnect the power before starting any maintenance.
When opening the machine's interior, remove the variable frequency drive. For the drive itself, the first thing to observe is the surface. For surface inspection, it is necessary to look, smell, and test. First, look for any broken wires inside and check if there is any burning on the surface. Smell it to see if the electrical components have been damaged due to excessive heat.
Many electrical appliances fail due to excessive heat after prolonged use, which then burns out the servo inverter. Hence, the cause is evident upon inspection. It's a test to see if the inverter operates; if not, a new one is directly replaced. If the inverter functions, a multimeter is used for a check to identify any issues.
3. Once we detect an issue, we need to conduct an elimination process swiftly and accurately. After resolving the fault, it should be put back into the machine for a trial run to see the actual results and to verify if the inverter, after repair and installation, is functioning normally.
