The specific implementation of each functional module of the trolley annealing furnace

The programming of PLC is carried out according to the way set by its programming software, and then according to the requirements of the programmer. The program compiled is the specific manifestation of the functions set by the PLC itself. The programming languages we often use in the PLC of the trolley annealing furnace include various representations such as ladder diagrams and statement tables.
In the PLC hardware configuration used in the annealing furnace, the PLC program design adopts the programming software GXDeveler, which can complete the programming of Mitsubishi FX2N series PLC, with many advantages such as good function, simple programming, and simple operation. The programs designed through it have many advantages, such as clear and easy to understand programs, convenient updates and debugging.
The specific implementation of each functional module of the trolley annealing furnace:
The temperature control system implemented in this article includes multiple auxiliary control modules, including the forward and backward movement of the trolley, the rise and fall of the furnace door, the start and stop of the combustion fan, the start and stop of the induced draft fan, and the pressure control of the annealing furnace. Control the above modules through PLC programming software to achieve complete operation of the entire annealing furnace.
1. Trolley and furnace door control:
The control of the trolley and furnace door of the trolley annealing furnace is a relatively basic control of the entire furnace, and it is also the key to determining whether the furnace can operate normally. In the control of the trolley and furnace door, both the forward and backward movement of the trolley and the upward and downward movement of the furnace door must be interlocked and equipped with emergency stop settings to prevent dangerous situations from occurring. A safety interlock is also installed between the trolley and the furnace door. The furnace door can only be lowered after the trolley is in place, and the trolley can only operate after the furnace door is lifted in place.
2. Control of combustion fan:
The function of the combustion fan is to provide oxygen for the combustion of the burner and serve as a medium for thermal circulation. The starting method of the combustion fan for the trolley annealing furnace is selected as star angle starting, which has relatively stable performance.