The RS485 communication control board is the interface for automatic control of the DC rectifier. Each rectifier needs to be equipped with an RS485 communication control board. This communication board converts the internal analog signal of the rectifier into a digital signal through the RS485 communication line and sends it to a computer or PLC. The user can simply directly control the rectifier or systematically automatically control it. The communication board has the following characteristics: It is highly compatible with a personal computer or PLC for automatic control, which makes the operation more efficient. A single computer or PLC can control more than 100 rectifiers at the same time. It uses two-core shielded wire communication, simple wiring, and uses digital quantities. Transmission, high transmission accuracy, strong anti-interference ability, accurate output control, closed-loop control and real-time output monitoring mechanism.
* Adopt international RS485 network control system, high control accuracy, simple and convenient wiring, digital signal transmission, strong anti-interference ability, no signal attenuation, when PLC and upper computer program fails, manual/automatic switching control can be adopted Electric current is currently the most advanced network control system.
* Each rectifier display control system is equipped with an RS485 network control card, which can convert the internal analog signal of the rectifier into a digital quantity and transmit it to the host computer/touch screen, and can receive the host computer/touch screen instructions at the same time to realize voltage and current control of the power supply. All power supplies are connected to the host computer through a communication card and PLC. Each communication card can simultaneously realize RS485 network control with 64 power supplies. More than 64 power supplies need to add a communication card.