After (a) access-controlled or remote start command, DSE4520, the unit should be able to start automatically; to the electricity grid and the use of the standby unit, when the voltage drop (380V-20% ~ + 15% adjustable), or interruption of power supply or open phase, the unit after the delay should be able to automatically start 5s; (b) the unit automatically starts the first 3 failed, failed to start signal shall be given; (c) from the start command to automatically send power to the load time ≤12s ; (time can be set) (d) unit starts automatically after a successful, original DSE4520, the first loading of ≥50% of rated load; (e) the unit is turned on after the rated load shall be automatically and reliable operation; (f) set to start automatically the success rate of not less than 98%. 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, higher than 450V (size can be set) output current is too high, the size can be set set (depending on power generating units) frequency is too high, higher than 60Hz (size can be set) frequency is too low, lower than 40Hz (size can be set) low speed emergency 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 DSE4520, controller (certified), DSE4520 provided by the Dongguan City, South City 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.