Honeywell UDC 3300 manual Accutune

5.21 Accutune

Introduction	There are several types of Accutune from which to choose:
	• (TUNE) Demand Tuning—Tuning is done on demand

– by pressing the

LOWER DISPLAY

and

▲

keys simultaneously,

	–	by selecting prompt “TUNE” in the lower display,
	–	via digital input.
	• (SP) Setpoint Tuning*—SP only tuning will continually adjust the
	Gain or Proportional Band (P), Reset (I), and Rate (D) tuning constants
	in response to setpoint changes.
	• (TUN+PV) Demand Tuning + PV Adapt—Provides TUNE On
	Demand tuning plus PV adaptive tuning whenever a PV process
	disturbance of 0.3 % span or greater occurs.
	• (SP+PV) Setpoint Tuning* + PV Adapt—Provides SP only tuning
	plus PV adaptive tuning whenever a PV process disturbance of 0.3 %
	span or greater occurs.
	*Not available on Basic Model DC330B
Configuration	To configure this item, refer to Section 3 – Configuration:
	• Set Up Group ACCUTUNE.

• Function Prompt ACCUTUNE or ACCUTUN2 depending on which loop you are tuning.

Two-loop and cascade operation

• Select DISABL, TUNE, SP, TUN+PV, or SP+PV. Use the ▲ or ▼

key.

If SP is selected:

–Enter the setpoint change value, function prompt SP CHANG or SP CHAN2.

–Verify or change the process gain value, function prompt KPG or KPG 2.

–Verify criteria, function prompt CRITERIA or CRITERA2.

Accutune can be used on either or both loops. However, while one loop is operating by SP tuning, the configuration of either loop cannot be changed. When one loop is operating by PV adaptive tuning, the other loop can have its configuration changed.

194 UDC 3300 Controller Product Manual 4/00