Product Name: Air Fan Water Pump Type Frequency ConverterProduct Category: Water Pump Control Cabinet•Power range: 5.5KW ~ 415KW (three-phase 380V)• It can set large-scale motor control IC +dedicated drive circuit +IGBT as the core,Website: , and the whole machine has high reliability;• It uses the power grid strongly and the fluctuations can be ± 20%, and it's particularly suitable for the countries and regions which have poor power quality;• The function is one for six and the automatic switching of frequency conversion and power frequency can be achieved;• There are built-in on by alarm, dormancy and other functions;• There are three types of pressure feedback signal settings: resistance 0 ~ 400Ω, current 4 ~ 20mA, voltage 0 ~ 10V;• There are PID control and upper and lower control modes;• There are up to 12 time zones and six pressure target values, which is convenient for user'sprogram to run;• There are many working ways to protect the pump and it can extend the pump's life to the maximum;• There is RS485 interface, which is convenient to form centralized control system;