Omega CN4321, Manual, Page: 65 / 83

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very dynamic. Because of how the Autotune function is performed, a
very dynamic system would create very large overshoots which
could damage the process.
3. The system is very insulated and cannot cool down in a timely man-
ner. With such heating systems the autotuning function would take a
long time to complete, with questionable results.
During autotuning test signals are sent to the process. The test signals
are 100% output and 0% output at the Autotune point. The Autotune
point can either be at setpoint or 10% of full scale below setpoint.
The controller performs as an On/Off controller. See diagram below.
The