The PLC-controlled intelligent LED street light system, supplied by Renesas, builds up mutual communication through existing power lines directly, thus effectively reducing total cost of this system. Meanwhile, its unique auto connection and auto reconnection functions realize reliable communication and convenient use.

Inside the control center, operators are allowed to switch on, switch off or dim road lights, and they could check the working status of every road light as well, thereby facilitating maintenance work.

Advantage
1. Low cost: Extra wiring is not required since there are existing power lines
2. Reliable performance: Auto reconnection if communication fails
3. Intelligent operation and low power consumption: 78K0/I×2 microcontroller for precise brightness control and DALI protocol communication
4. AC drive: LED is driven by AC, thus reducing the total number of electronic devices

Application
Outdoor lighting