Design of Ex Soft Starter Control System Based on TMS320LF2407A

According to the soft starter operation requirements of coal mine underground flameproof and intrinsically safe AC motor,the paper introduced design principles and methods of the mine flame-proof soft start control system with TMS320LF2407A chip as its core.The hardware and software design of the soft start control system were described.The system had advantages of high reliability,smooth motor starts,reducing the starting current,etc,which made very good starting results.