Monitoring and Operating the Controller
3/07 UDC3500 Universal Digital Controller Product Manual 199
Lower Display Description
XXRAHR.MN
RAMP SEGMENT NUMBER AND TIME REMAINING—Set Point Programming
display. XX is the current segment number and HR.MN is the time remaining for this
segment in Hours.Minutes. When the program is in the “HOLD” mode, the Segment
Number can be incremented/decremented.
XXSKHR.MN
SOAK SEGMENT NUMBER AND TIME REMAINING— Set Point Programming
display. XX is the current segment number and HR.MN is the time remaining for this
segment in Hours.Minutes. When the program is in the “HOLD” mode, the Segment
Number can be incremented/decremented.
RECYC XX
NUMBER OF SP PROGRAM RECYCLES REMAINING
To BEGIN
RESET SP PROGRAM TO START OF FIRST SEGMENT
RERUN
RESET SP PROGRAM TO START OF CURRENT SEGMENT
1PV XXXX
PROCESS VARIABLE 1—For Cascade or 2-loop applications.
2PV XXXX
PROCESS VARIABLE 2—For cascade or 2-loop applications.
OC1 XX.X
CHARACTERIZED OUTPUT 1—Displayed if Loop 1 output is characterized.
OC2 XX.X
CHARACTERIZED OUTPUT 2—Displayed if Loop 2 output is characterized.
Σ [Sigma]XXXXXXX
CURRENT TOTALIZER VALUE—Displays the total flow volume being measured.
1CO XXXX
FIRST CURRENT OUTPUT—Displayed only when the First Current Output is
enabled in an Auxiliary Output mode.
2CO XXXX
SECOND CURRENT OUTPUT—Displayed only when the Second Current Output is
enabled in an Auxiliary Output mode.
3CO XXXX
THIRD CURRENT OUTPUT—Displayed only when the Third Current Output is
enabled in an Auxiliary Output mode.
BIA XXXX
BIAS—Displays the manual reset value for algorithm PD+MR.
OTI XX.X
OUTPUT OVERRIDE (2 PID LOOPS ONLY)—Appears when Internal Loop 1 Output
value is displayed. This represents the internal output 1 value before override.
DEW XX.X
DEWPOINT TEMPERATURE—Shown only when Dewpoint Algorithm is selected as
Input Algorithm 2.
TUNE OFF
LIMIT CYCLE TUNING NOT RUNNING—Appears when Accutune is enabled but not
currently operating.
TUNE RUN
LIMIT CYCLE TUNING RUNNING—Appears when Accutune operation is in
progress.
DO FAST
Limit Cycle Tuning with the objective of producing quarter-damped tuning
parameters. This tuning may result in PV overshoot of the SP setting.
DO SLOW
Limit Cycle Tuning with the objective of producing damped or Dahlin tuning
parameters, depending upon the detected process deadtime. The tuning parameters
calculated by this selection are aimed at reducing PV overshoot of the SP setting.
4.5.3 Diagnostic Messages
This instrument performs background tests to verify data and memory integrity. If there is a malfunction, a
diagnostic message will be shown on the lower display alternating (blinking) with the normal display. In
the case of more than one simultaneous malfunction, the diagnostic messages will be shown in sequence,
with the highest priority message being shown first. See Section
7.5 - Background Tests and Diagnostic
Messages for a l
ist of the Diagnostic Messages and how to correct the problems that they indicate.
Diagnostic messages may be suppressed (stop the blinking) by pressing the RUN/HOLD key. The
messages will still be available for viewing by pressing the LOWER DISPLAY key. If the underlying
condition has not been corrected, then the next time the instrument is powered-down/powered-up, the
diagnostic message will return.
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