Configuration
Function Prompt Selections or
Parameter
Lower Display
Range of Setting
Upper Display
Definition
ACCUTUNE
DISABLE
TUNE
ACCUTUNE III
DISABLE —Disables the Accutune function.
DEMAND TUNING—If TUNE is selected, and tuning
is initiated through the operator interface or digital
input (if configured), the algorithm calculates new
tuning parameters and enters them into the tuning
group. This tuning requires no process knowledge
and does not require line out for initialization.
DUPLEX
DUPLEX ACCUTUNING III – These prompts only
appear when a duplex output type has been
configured.
This prompt only
appears when a
Duplex Control
Algorithm has been
configured
MANUAL
MANUAL – Tune manually using LSP 1 and LSP 2
values. LSP 1 is used to derive tuning parameters
associated with HEAT (output > 50 %). LSP 2 is
used to derive tuning parameters associated with
COOL (output < 50 %).
AUTO
AUTOMATIC – Tuning is performed automatically
on both HEAT and COOL sequentially. LSP 1 is
used for HEAT tuning and LSP 2 is used for COOL
tuning. To initiate tuning, either LSP 1 or LSP 2
must be in use.
DISABLE
DISABLE – The current SetPoint is used to derive a
single set of blended tuning parameters. This tuning
is performed over the range of the output limits
similar to Simplex Tuning. The Tuning Parameters
derived are placed into both the HEAT and COOL
tune sets (PID 1 and PID 2).
AT ERROR
(Read Only)
ACCUTUNE ERROR STATUS—When an error is
detected in the Accutune process, an error prompt
will appear.
NONE
NONE—No errors occurred during last Accutune
procedure.
RUNNING
RUNNING—An Accutune process is still active
checking process gain, even though “T” is not lit. It
does not affect keyboard operation.
ABORT
CURRENT ACCUTUNE PROCESS ABORTED—
Caused by one of the following conditions:
• changing to manual mode
• digital input detected
• in heat region of output but a cool output was
calculated, or vice versa.
SP2
SP2—LSP2 not configured or a Setpoint other than
LSP1 or LSP2 is in use.
12/04 UDC3200 Universal Digital Controller Product Manual 49
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