Cause the unit to automatically shut down or a protection project photoacoustic signal is as follows: The output voltage is too low, less than 320V (size can be set) output voltage is too high, stock 300-5926, higher than 450V (size can be set) output current is too high, original 300-5926, size can be set (according to the generator set power) frequency is too high, 300-5926, higher than 60Hz (size can be set) frequency is too low, lower than 40Hz (size can be set) Low-speed emergency overspeed stop, with emergency stop button to start the failed three times failed to start alarm (size can be set) oil pressure is too low, lower than 1.5bar control cabinet display shows the following: three-phase line voltage, phase voltage and frequency; generating units : Three-phase line voltage and phase voltage, phase current; frequency, power factor, active power, reactive power, leakage current, oil pressure, water temperature, speed, battery voltage, charge current, fuel level, running time, input and output point, date, etc. Specific have the following functions: 300-5926 | Cummins (certified) | 300-5926 by Dongguan Nancheng Zhongxin Electrical and Mechanical operation. Dongguan Nancheng Zhongxin Electrical and operating (zhongxin888.net.cn) Dongguan, Guangdong, industrial products leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Zhongxin Electrical and Mechanical leadership with the staff warmly welcome all inquiries negotiations to create a better future for electromechanical faithful.