The project is a central air-conditioning control system of a subsidiary of a domestic photovoltaic giant, the system uses Siemens S7-400CPU as the main controller, 17pcs ET200SP are slave station of IO, The monitoring software of upper computer is WinCC7.5.
The low voltage control cabinet system used for onsite and remote operation of the feeding system, rotary kiln, secondary combustion chamber, dust extraction and tail fume treating equipment of the equipment.
The working principle of the solenoid valve controlling cabinet is to control the opening and closing of the cold and hot primary air and the cold bypass baffle valve of the coal mill in the power station.