How does the inverter compressor controller work?

Release Time:

2022-03-07 11:36

How does the inverter compressor controller work?

Variable frequency compressor controller: After the AC voltage is reduced by the 380V transformer, it is converted to 110V DC through the rectifier, and then enters the suction board through the control device, the suction board is charged, and the reverse voltage line is applied when demagnetization, and the controller realizes the demagnetization function.

Access Control Controller: The access control controller works in two modes. One is the patrol mode, and the other is the recognition mode. In the patrol mode, the controller continues to send a query code to the card reader and receives a response command from the card reader. This mode will remain until the card reader detects the card. If the card reader detects a card, the card reader generates a different response to the controller's check command. In the response command, the card reader transmits the read detection card internal code data to the access control controller, thereby causing the access control controller to enter the identification mode. In the identification mode of the access control controller, the access control controller analyzes and detects the internal code of the card, and compares it with the card data stored on the device for subsequent operations. After the access control controller completes the data receiving action, it will send a command to respond to the card reader, so that the card reader returns to the state, and the access control controller returns to the patrol mode.

The inverter compressor controller is a means that the physical quantity controlled in the closed-loop control system can quickly and accurately approach the control target. PID control function is one of the important fields of inverter application technology, and it is an important technical means for the inverter to play a good performance.

The design, operation and maintenance personnel of the inverter compressor controller should be fully familiar with and master the basic theory of PID control.

The industrial automation level of inverter compressor controller has become an important symbol to measure the modernization level of various industries. At the same time, the development of control theory has gone through three stages: classical control theory, modern control theory and intelligent control theory. A typical example of intelligent control is fuzzy automatic washing machine, etc. Automatic control system can be divided into open-loop control system and closed-loop control system. The control system includes a controller, a sensor, a transmitter, an actuator, and an input/output interface. The output of the controller is added to the controlled system through the output interface and the actuator. The control quantity, sensor and transmitter of the control system are sent to the controller through the input interface. Different control systems have different sensors, transmitters, and actuators. For example, pressure control systems require the use of pressure sensors. The sensor in the electric heating control system is a temperature sensor. PID control and its controller or intelligent PID controller (m) has been widely used, the product in engineering has actually been widely used, there are a variety of PID controller products, major enterprises have developed a PID parameter self-adjusting function of intelligent regulator (intelligent regulator). Among them, the automatic adjustment of PID controller parameters includes the pressure, temperature, flow, liquid level controller realized intelligently or through PID control, the programmable controller (PLC) realizing PID control function, the PC system realizing PID control, etc. Programmable Logic Controller (PLC) uses closed-loop control module to perform PID control, while programmable controller can be directly connected with the ControlNet, and some controllers realize PID control function.