Honeywell UDC 3300 manual Accutune Set Up Group

3.9Accutune Set Up Group

Introduction	The Accutune Set Up group offers these selections:
	•	FUZZY
		Fuzzy Overshoot Suppression—Uses fuzzy logic to suppress or
		eliminate any overshoot that may occur when the PV approaches
		setpoint.
	•	TUNE
		Demand Tuning—The tuning process is initiated through the operator
		interface keys or via a digital input (if configured). The algorithm then
		calculates new tuning parameters and enters them in the tuning group.
		TUNE does operate with 3 Position Step Control.
	•	SP*
		SP Tuning—SP tuning continuously adjusts the PID parameters in
		response to setpoint changes. You can select tuning on minimum
		setpoint changes of 5 % up to 15 % span. Perform SP tuning after you
		have configured the controller.
		SP tuning does not operate with 3 Position Step Control algorithm.
	•	TUN+PV*
		or
		SP+PV*
		PV Tuning—The (TUNE) Demand Tuning or the (SP) Setpoint
		Tuning portions of these selections work as stated above. PV Adapt
		will occur during Process Variable (PV) disturbances (0.3 % span or
		larger) which result from non-linearities, process dynamics, load
		changes, or other operating conditions. When this condition exists, the
		controller monitors the process response for 1 and 1/2 process cycles
		around the setpoint to determine whether there has been a true process
		change or a momentary upset.
		Process retuning occurs as the process dynamics are learned. When the
		process is being learned with possible retune, a t is shown in the upper
		left display digit.

*SP + PV Tuning not available on Basic Model DC330B.

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