Abstract : The electrical control system of the bucket wheel stacker-reclaimer adopts PROFIBUS-DP bus control, which can save a lot of control cable and installation costs, and is easy to install and maintain. In practice, the system has a fast response time, strong anti-interference capability, stable operation, and reliable safety. Keywords : Bucket wheel stacker-reclaimer; PROFIBUS-DP bus; PLC; Frequency converter [b][align=center]Application of PROFIBUS-DP in bucket wheel stacker -reclaimer electricity FENG M in, LIU Yu (Research Institute, Harbin Heavy Machinery Plant, Harbin 1 50040, China)[/align][/b] Keywords: bucket wheel stacker and reclaimer; PROFIBUS-DP bus master; PLC; frequency convener 1 Introduction The bucket wheel stacker-reclaimer is a large-scale bulk material handling machine. Its electrical control equipment is mainly concentrated in the driver's cab, upper electrical room, lower electrical room, and high-voltage electrical room. The traditional configuration places the automatic control cabinet in the driver's cab and sends control signals to the electrical control cabinets in the upper and lower electrical rooms via multi-core control cables. This results in complex control wiring, a large amount of installation wiring, and difficult maintenance. Using a SIMATIC S7-300 programmable controller and PROFIBUS-DP (distributed I/O) to control the various actuators on the machine, the control network is simple, the system is optimized, and it fully meets the control requirements of each actuator on the machine. [b][align=center]For more details, please click: Application of PROFIBUS-DP in the Electrical Control System of Bucket Wheel Stacker-Reclaimer[/align][/b]