IGBT inverter repair overcurrent protection HCPL-316J have to IGBT over-current protection, protective action to implement it by detecting the IGBT turn-on voltage drop. The same can be seen from the figure, in its internal fixed 7V level Fuji inverter repair, in the detection circuit, it detected IGBT C ~ E pole with built-in voltage drop across 7V level comparison, When it exceeds 7V, HCPL-316J chip output low shutdown IGBT, while an on-chip error detection signal is fed back to the input side of the optocoupler drive repair, in order to take corresponding measures. When the IGBT is turned off, the voltage of its C ~ E pole at both ends must be over 7V, but this time, the overcurrent detection circuit failure, HCPL-316J chip does not report failure signal. In fact lg inverter repair, since the diode voltage drop between the IGBT of C ~ E voltage less than 7V to take protective action when the chip. 6ES5090-8MA01 compact S5-90U programmable controller and battery, 10 DI 24V 6 relay contacts, the power supply voltage 115 / 230V6ES5090-8ME11S5 IM 90 interface module is used to extend the S5-90U with maximum 6 S5-100U I / O modules 9V and 24V DC power supply 440 buses drive repair, electrical Shen (certified), Suifenhe drive repair on the people by the Shenyang Electric Limited. Shenyang on China Electric Co., Ltd. (www.zsmsy.com) is Shenyang, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. On Shen Electrical leadership with the staff warmly welcome all inquiries negotiations to create a better future for electric Shen.