Accutune Set Up Group - Honeywell UDC2800 Product Manual

Chapter 4 - Configuration

Accutune Set Up Group

Introduction
Accutune III automatically calculates GAIN, RATE, and RESET TIME
(PID) tuning constants for your control loop. When initiated on
demand, the Accutune algorithm measures a process step response
and automatically generates the PID tuning constants needed for no
overshoot on your process.
Fuzzy , Fuzzy Overshoot Suppression: When enabled, this
configuration will suppress or eliminate any overshoot that may
occur as a result of the existing tuning parameters, as the PV
approaches the 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 will operate with PIDA, PIDB, PD+MR and
Three Position Step Control algorithms.
Simplex Tuning is used when a Simplex Control Algorithm is
configured and uses the current SP value and alters the output over
the Output Limit Range.
Duplex Tuning is used when a Duplex Control Algorithm is
configured. To perform a Duplex Tune, Two Local Setpoints must be
configured. See Control Set Up Group for more information.
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