The application of frequency converter in constant pressure water supply

· Industry customized advanced features: One click setting for intelligent constant pressure water supply, solving the tedious debugging in the past, making it easy for customers to use.
· Flexible configuration of automatic control: It can achieve automatic control of up to 4 main pumps or 3 main pumps+1 small pump. Flexible configuration fully meets the requirements of various complex water supply or fire protection systems.
· Automatic pump replacement: The timed pump replacement function ensures balanced working time of each pump and improves the average service life of the water pump.
· Regular inspection and safety protection: equipped with fire pump inspection function, the fire pump is regularly inspected according to the set time in fire mode, effectively preventing rust and death of the fire pump.
· Energy saving, environmentally friendly, and long-lasting design: With the function of a dormant auxiliary small pump, it can save energy, reduce consumption, and extend the service life of the equipment.
· Pressure setting control function: It has a second target pressure setting and control function.
· Dual function of positive and negative feedback: with a selection of positive and negative feedback functions, it can be used for both water supply and pumping to maintain water level.
· Alarm control safety: It has alarm control functions such as overpressure, low water level, sensor disconnection, and frequency converter failure.
· Isolation design is more anti-interference: both analog and digital signals are optically isolated, with strong anti-interference ability.
· Matching communication configuration control: optional RS-485 communication function, standard MODBUS communication protocol, easy to connect with the upper computer for configuration control.
· The frequency conversion energy-saving efficiency of fans and water pumps is between 25–60%. 
· Energy saving comparison table: comparison of energy consumption during variable frequency speed regulation of fans and water pumps.