Honeywell UDC3300 - 4.15 Accutune

Setpoint Rate/Ramp/Soak Program Operation
74 UDC3300 Expanded Model: DC330E User Manual 5/00
Digital Inputs 1 and 2 Combination Selections
Table 4-20 Digital Input Combinations “DIG IN1” or “DIG IN2”
Selections used in
Combination with
“DIG IN1” or “DIG
IN2”
Display Indication Action on contact closure
Returns (toggles) to original state
when contact opens.
+PID2 PIDSET 2 in lower display
Selects PID set 2.
+ToDIR
Puts the controller into direct action.
+ToSP2 RSP blinks
Selects the second local setpoint.
+DISAT T indicator is no longer lit
Disables Adaptive tune.
+ToSP1
Selects the local setpoint.
+RUN R indicator blinks
Starts or restarts RUN of SP RMP/PROG.
4.14 Fuzzy Overshoot Suppression
Fuzzy Overshoot Suppression minimizes overshoot after a setpoint change or a
process disturbance. This is especially useful in processes which experience load
changes or where even a small overshoot beyond the setpoint may result in damage
or lost product. It can be configured to apply to Loop 1, Loop 2, or both loops.
Configuration
To configure this item, refer to Section 3 – Configuration:
• Set Up Group ACCUTUNE
• Function Prompt FUZZY
• Select ENABLE or DISABL (▲ or ▼)
4.15 Accutune
There are several types of Accutune from which to choose in DC330E Models:
• (TUNE) Demand Tuning—Tuning is done on demand
n by pressing the LOWER DISPLAY and ▲ keys simultaneously,
n by selecting prompt “TUNE” in the lower display,
n 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.