Function Blocks
3/99 Function Block Reference Guide 225
2.74 TPSC (3POS) Function Block,
continued
Configuration Parameters,
continued
Table 2-62 Accutune Tab Configuration Parameters
Properties
Group
Parameter Index# Parameter Description Value or Selection
Accutune Type Disabled
N/A Disables Accutune Click on radio button
to select
On Demand
N/A When initiated, the controller will
start controlling to the setpoint
while it identifies the process,
calculates the tuning constants,
and begins TPSC control with
the correct tuning parameters.
Click on radio button
to select
Click on block to select
27 Fuzzy Overshoot Suppression minimizes overshoot after
a setpoint change or a process disturbance.
The fuzzy logic observes the speed and direction of the
PV signal as it approaches the setpoint and temporarily
modifies the internal controller response action as
necessary to avoid an overshoot.
There is no change to the TPSC algorithm, and the fuzzy
logic does not alter the TPSC tuning parameters.
This feature can be independently Enabled or Disabled
as required by the application to work with “TUNE” On-
Demand tuning.
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