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In the design of Fan Group Control System, PIC18F14K50 supports many kinds of serial communication interface including USB2.0, USART and Spi, which can realize data conversion and transmission between USB and SPI interface, and greatly simplifies the hardware circuit, thus, the stability and reliability of the whole module are greatly enhanced. The circuit includes communication circuit, display and key-press circuit, etc. . The terminal control node has rich resources, including PWM control module and SPI interface, which greatly simplifies the design of peripheral circuit and the development of system. The design adopts the special PWM control module of Motor control on Dspic30f2010, combines the main circuit to complete the intelligent frequency conversion speed regulation control of FFU Fan, and uses the SPI interface to connect with nRF2401 to complete the wireless data communication networking. The electrical parameters are collected by the 10 bit Analog-to-digital converter on the chip, the motor speed is collected by the orthogonal encoder interface, and the output air volume is calculated. The hardware of the wireless measurement and control terminal includes the main circuit and the control circuit. The main circuit includes rectifier filter and inverter circuit. The Control Circuit includes control power supply circuit, sampling and processing circuit, isolation and amplification drive circuit, radio frequency communication module, display and other circuit modules. The real-time feedback signal is used to control the motor, which reduces the disturbance of human factors to the production process, improves the process control precision, improves the product quality and output, and reduces the energy consumption. With the use of AC variable frequency speed governor, the failure of electrical equipment is greatly reduced, and there has never been an abnormal shutdown accident caused by the thermal relay action or the air switch action caused by the large starting current and the process fluctuation. Especially when the power grid fluctuates and starts again, because it can start from the actual operating frequency of the motor at that time, the starting is smooth and the impact on the power grid is small. Before the use of AC variable frequency speed governor, restarting often causes thermal relay action or air switch action, resulting in an accident shutdown. Wide Range of fan speed regulation. Fan Motor operating frequency range of 35-45 H: , and frequency converter speed range of 10-50 Hz, fully meet the requirements of process production. The Motor starts without impact and runs smoothly. The starting current of the original AC actuating system has a great impact on the equipment. After the use of AC variable frequency governor, the motor starts from zero, and then gradually smooth speed up, thus reducing the impact on the equipment, so that the system equipment failure rate 6 conclusion AC variable frequency governor uses ZA

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DI524

AEG SPS Modul KPE-141 

 AEG SPS Modul MEA 842 

 AEG Microverter D 1-8/500

 AEG Einbaukarte A81 470.001 176 470-001-176 02-G1-A1-A425

 AEG Thyrosoft T-Soft 3DA 500-60H

 AEG SPS Modul MWA-16PN 6051-042.194970

 AEG hitex PB386-PMB-S-4.1 SN:48 CPU 386

 AEG PS451 PS 451 Schutzmodul P 89451-0-1232003-301-402-602

 AEG SPS Modul VCU 851 6058-042.239035 B500 

 AEG SPS Modul VPU 852 6058-042.239668 B500 

 AEG  DEA 201 DEA201/AS-BDEA-211 042.701626 701626

 AEG Modicon B875 AS-B875-102

 AEG DAP106 DAP 106 6051-042.248276 248276

 AEG Modnet 1/IS Master BKF101 7634-042.261001 261001 E8 Modicon A250

 AEG Einbaukarte A81 470-001-121 470.001.121 02-G1-A1-A421

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