Honeywell UDC2500 manual Fuzzy Overshoot Suppression, Tune, Accutune, Duplex

Configuration

Function Prompts

Table 3-6 ATUNE Group (Numeric Code 300) Function Prompts

Function Prompt		Selection or Range of Setting			Parameter
Lower Display		Upper Display			Definition
English	Numeric	English	Numeric
	Code		Code
FUZZY	301				FUZZY OVERSHOOT SUPPRESSION—
					Can be enabled or disabled independently of
					whether Demand Tuning or SP Tuning is
					enabled or disabled.
		DIS	0		DISABLE—Disables Fuzzy Overshoot
					Suppression.
		ENAB	1		ENABLE—The UDC uses Fuzzy Logic to
					suppress or minimize any overshoot that
					may occur when PV approaches SP. It will
					not recalculate any new tuning parameters.
TUNE	302				ACCUTUNE III
		DIS	0		DISABLE —Disables the Accutune function.
		TUNE	1		DEMAND TUNING—If TUNE is selected,
					and tuning is initiated through the operator
					interface or digital input (if configured), the
					algorithm calculates new tuning parameters
					and enters them into the tuning group. This
					tuning requires no process knowledge and
					does not require line out for initialization.
DUPLEX	303				DUPLEX ACCUTUNING III – These prompts
					only appear when a duplex output type has
					been configured.
		MANU			MANUAL – Tune manually using LSP 1 and
					LSP 2 values. LSP 1 is used to derive tuning
					parameters associated with HEAT (output >
					50 %). LSP 2 is used to derive tuning
					parameters associated with COOL (output <
				50 %).
		AUTO			AUTOMATIC – Tuning is performed
					automatically on both HEAT and COOL
					sequentially. LSP 1 is used for HEAT tuning
					and LSP 2 is used for COOL tuning. To
					initiate tuning, either LSP 1 or LSP 2 must be
					in use.

44 UDC2500 Universal Digital Controller Product Manual 4/07