Which system can PLCs not be customized for?

Programmable Logic Controllers (PLCs) are highly versatile and can be programmed to control a wide range of industrial processes. However, when it comes to systems that require precise control over complex reactions and variable combustion processes, such as a boiler combustion control system, PLCs may face limitations.

In boiler combustion control, the systems often require real-time adjustments based on fluctuating parameters like fuel mix, air flow, and temperature to maintain efficiency and safety standards. These processes may involve sophisticated algorithmic controls that can exceed typical PLC programming capabilities, which are generally more suited for discrete operations rather than continuous and complex feedback systems that a boiler might need.

On the other hand, systems like lime mud mixing, air dryer sequencing, and conveyor sequencing generally involve more straightforward, sequential operations that can be effectively managed through typical PLC configurations and programming, making them more customizable for such applications.