Emerson Exchange 365

Tip #95: Use External-Reset Feedback for Cascade Control and Slow Final Control Elements

The value of the external-reset feedback feature in PID controllers is becoming increasingly apparent to me. I got a preview of its importance when I found that 1980s vintage DCS required a fix for override control that was addressed in the next generation of DCS by this feature. This wakeup call was followed by the [...] Read the full text.

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