Customer: Huizhou City Tong frighten a hardware products factory

Brand: Fuji

Power: 45KW/380V

Fault phenomenon: customer response in the morning running fan run stop inverter display OC1 (overcurrent)

Fault analysis: to pass into the DC power converter test, indicating an overcurrent fault (OC1, this is our fault inverter more common), that is current detection and protection circuit problem, comprehensive measurement of current protection circuit, and did not find any abnormal phenomenon. Again power or display such a fault, it is strange that the fault can be reset, according to empirical analysis, the replacement of the filter capacitor drive circuit should be harvested. Because usually repair the old inverter, you must drive the filter capacitor (usually the chip capacitor) to replace the new capacitor, because these capacitors are easy to aging. After the replacement of all the capacitors, the power on the normal operation.

Failure reason: This machine is mainly due to the driving circuit of the filter capacitor aging caused by OC1 fault.

Fault handling: the replacement of the drive circuit of all the filter capacitor, the power converter to return to normal.

Jia Hong Wei repair hotline: 075528916839 Jia Hong Wei maintenance hotline: 075528916839