What is Cascade Control?

Cascade Control

Understanding Cascade Control

Cascade control is a technique used to enable processes with long lags to be controlled with the fastest possible response to process disturbances including setpoint changes, whilst still minimizing the potential for overshoot. This is achieved by controlling a secondary, more responsive process that influences the main process. The main process is controlled using a master PID loop, the output of which is used to determine the setpoint of the secondary process which is controlled by a second PID loop. This second loop is referred to as the slave loop.

Ideal for:

  • Heat treatment furnaces
  • Vacuum furnaces
  • Autoclaves
  • Semiconductor diffusion
  • Batch reaction vessels • Heat exchangers
  • Crystal growth
  • Distillation columns 

Download the Technical Paper Here

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