The Phidia GTS five-axis gantry burned out 7 servo drives in a month, which was too abnormal and the manufacturer did not give a solution. Last month, a company had two domestic non-dia GTS32 five-axis gantrys, which had been in use for two years, and one imported GT F35 five-axis gantry had been used for less than a year. In May, the servo drive was frequently damaged, not the same shaft, and the manufacturer could not find out the cause on the spot, so that the grounding device could be re-made. The user made a grounding device and the next day damaged a servo drive. My company also went to the scene to check, just look at the machine tool electrical, found that these three machine tools and the whole workshop machine tool is different, these three power lines from the regulated voltage power supply, the voltage is 380V, the fluctuation range is 5%. After entering the cabinet, connect the booster transformer, tap output 400V, enter the filter, and then enter the servo drive. Workshop other DMG five-axis machining center, Taiwan's gantry machining center, Doosan vertical machining center, Taiwan Kaibak vertical machining center are using automatic voltage stabilized power supply power supply, into the machine tool, the machine tool has an isolation transformer, the main power supply and through the reactor, and then into the servo drive, the use of two years has not appeared servo drive damage problem.
The use of the same environment, are the same power supply, there is no interference source nearby. I don't know if the cause of the damage is that there is no reactor and the isolation transformer, and it is not broken in June, which is very strange.
Then there is the poor installation wiring of fidia's drive, which is crimped with a nut, especially the motor wire and grounding wire in the lower part of the drive, without the convenience of Siemens and Fanuc.
