The main role of the frequency conversion control cabinet is to regulate the operating frequency of the device, so that the equipment can work smoothly, which can reduce energy consumption.The frequency conversion control cabinet generally has communication functions, macro function, and analog input control functions.It is distinctive, not only low operating costs, but also saving energy, which can improve the control accuracy of pressure, extend the service life of the motor, and reduce noise.
The role of frequency conversion control cabinet
1. Power switching and protective function variable frequency control cabinets of the frequency conversion control cabinet are usually designed with interruption components. It connects the power supply to help the frequency conversion control cabinet to complete the circuit break operation.Provide protection when overloading.In addition, the frequency cabinet can also cut off the power supply of the operator safety during motor maintenance.2. The inverter -frequency speed -regulating function variable frequency control cabinet of the frequency conversion control cabinet is set on the control panel with variable frequency speed adjustment. According to the output frequency of the operator, the instruction signal to the motor can be controlled to control the speed of the motor.Some of the products in the inverter control cabinet have a working frequency switching function to ensure that when the inverter fails, the motor switch back to the motor frequency power supply by automatically control the circuit.
Principle of frequency conversion control cabinet work principle
The core device of the frequency conversion control cabinet is the frequency converter. The speed of the motor depends mainly on the power supply frequency. In addition to the small turning rate of the asynchronous motor, the speed is basically proportional to the power supply frequency.Propopy.Adjust the output frequency of the inverter to change the speed of the motor.The frequency conversion control cabinet is mainly used to regulate the operating frequency of the device, reduce energy loss, can start the device smoothly, and reduce the damage to the motor generated by the large current generated when the device directly starts.At the same time, with the simulation input (speed control or feedback signal), PID control, pump switching control (for constant voltage), communication function, macro function (different parameter settings for different occasions), multi -speed speed, etc.EssenceIt can be widely used in automatic control in various occasions such as water supply, drainage, firefighting, spray pipeline measuring mesh, and heating air -conditioned hot and cold water circulation of industrial and agricultural production and various buildings.
Frequency control cabinet design specification
1. General Principles: Before the design and installation of the frequency conversion control cabinet, the designer must not only consider the normal working conditions of the frequency conversion control cabinet, but also consider the possible fault conditions, predictable misunderstandings, and the excess of the power supply of temperature, pollution, humidity, power grid power supply,Voltage, harmonic interference and other external influences.Be a beautiful structure and reduce the volume as much as possible for transportation.2. Cabinet requirements: (1) Control cabinet installation method: Wall -mounted and floor -to -ceiling type exist at the same time.(2) Number of control cabinets dragging motors: one drag and one, can be extended to one drag.(3) Work frequency and frequency conversion switching method: The work frequency and frequency conversion work are spare, and automatically switch protection during failure.(4) Control cabinet control method: manual/automatic, local/remote, communication group network.(5) The isolation of the control cabinet: the front and back end are convenient to install noise filter, add a DC filter, and output electricity.
Variable frequency control cabinet price
The inverter control cabinet is still more expensive in the current market. The overall price is around 3500 yuan, but the price of the inverter control cabinet of different specifications will still be different. For exampleAt about 4,500 yuan, the other model is the price of LHSK778 at about 3600 yuan.

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