The document discusses limit control functions, specifically high limit and low limit functions, used in cascade control strategies to ensure safe and reasonable setpoints between master and slave controllers. The high and low limit functions are identical to the description given for the single acting boiler temperature control Lower limit and high limit.
PID Controller Theory - Instrumentation Tools
The purpose of these functions is to place a set limit on how high or how low a signal value is allowed to go before being passed on to another portion of the control system.
This limit could be set manually or could come from the output of a.
In this article, we will explore the most effective limit control strategies for che 430 process control, including high and low limit control, override control, and auctioneering control. We would like to show you a description here but the site won’t allow us. The limit output must be a mechanical relay It cannot be a solid state relay or a switched dc control signal
And honeywell l8124 and l7224 triple aquastat relays) The control limits of your control chart represent your process variation and help indicate when your process is out of control Control limits are the horizontal lines.
