Operation
50 UDC3300 Basic Model: DC33XB User Manual 12/00
4.11 Fuzzy Overshoot Suppression
Fuzzy Overshoot Suppression minimizes overshoot after a setpoint change or a
process disturbance. This is especially useful in processes that experience load
changes or where even a small overshoot beyond the setpoint may result in damage
or lost product.
Configuration
To configure this item, refer to Section 3 – Configuration:
• Set Up Group ACCUTUNE
• Function Prompt FUZZY
• Select ENABLE or DISABL (▲ or ▼)
4.12 Accutune
Demand Tuning is available for the UDC3300 Basic 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.
Configuration
To configure this item, refer to Section 3 – Configuration.
Rules and Regulations
• TUNE On Demand tuning will work for all control algorithms except ON/OFF.
Process line out is not required.
• TUNE On Demand tuning works for integrating processes.
• Tuning is done in automatic mode.
• Tuning can be monitored or reconfigured using communications option.
• Tuning can be enabled via digital inputs.
• Tuning can be aborted by going to manual mode or disabling via configuration.
• When tuning is in progress, a large T appears in the upper display and
disappears as soon as tuning is completed.
• Setpoint changes can be made during operation. The setpoint at the time tuning
starts is captured and Tune runs until completion, then proceeds to the new SP
value following the completion of tuning.
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