The maintenance of the frequency converter
Model: EH640A-2.2G
Failure phenomenon: running display "OC1" alarm
Fault analysis: this fault for the acceleration of the over current alarm, get the transducer for the static measurement of the IGBT module P module V is very short circuit, the rectifier part and the other are normal. It is normal to remove the module by using the oscilloscope to measure the driving waveform. By measuring the basic judgment motherboard and power are normal. May be a short circuit caused external output module damage. Replace the module to measure the output voltage is normal. With load measuring current is also basically normal. Delivery to customers for more than a month has not seen the customer response. Fault repair.
The common fault Jiahong victory Xilin converter: no display, repair phase, overcurrent, overvoltage, undervoltage, overheating, overload, grounding, parameter error, output module, display no damage, error; Hong Jia Wei complete accessories, professional maintenance engineers, test with the load test to ensure the quality of maintenance.
Jia Hong Wei repair service hotline: 0755-28916839, 13640994287 Shaw