Diagnostic Messages - Honeywell UDC3500 Product Manual

Lower Display
XXSKHR.MN
RECYC XX
To BEGIN
RERUN
1PV XXXX
2PV XXXX
OC1 XX.X
OC2 XX.X
Σ [Sigma]XXXXXXX
1CO XXXX
2CO XXXX
3CO XXXX
BIA XXXX
OTI XX.X
DEW XX.X
TUNE OFF
TUNE RUN
DO FAST
DO SLOW

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 list 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.
10/05
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.
NUMBER OF SP PROGRAM RECYCLES REMAINING
RESET SP PROGRAM TO START OF FIRST SEGMENT
RESET SP PROGRAM TO START OF CURRENT SEGMENT
PROCESS VARIABLE 1—For Cascade or 2-loop applications.
PROCESS VARIABLE 2—For cascade or 2-loop applications.
CHARACTERIZED OUTPUT 1—Displayed if Loop 1 output is characterized.
CHARACTERIZED OUTPUT 2—Displayed if Loop 2 output is characterized.
CURRENT TOTALIZER VALUE—Displays the total flow volume being measured.
FIRST CURRENT OUTPUT—Displayed only when the First Current Output is
enabled in an Auxiliary Output mode.
SECOND CURRENT OUTPUT—Displayed only when the Second Current Output is
enabled in an Auxiliary Output mode.
THIRD CURRENT OUTPUT—Displayed only when the Third Current Output is
enabled in an Auxiliary Output mode.
BIAS—Displays the manual reset value for algorithm PD+MR.
OUTPUT OVERRIDE (2 PID LOOPS ONLY)—Appears when Internal Loop 1 Output
value is displayed. This represents the internal output 1 value before override.
DEWPOINT TEMPERATURE—Shown only when Dewpoint Algorithm is selected as
Input Algorithm 2.
LIMIT CYCLE TUNING NOT RUNNING—Appears when Accutune is enabled but not
currently operating.
LIMIT CYCLE TUNING RUNNING—Appears when Accutune operation is in
progress.
Limit Cycle Tuning with the objective of producing quarter-damped tuning
parameters. This tuning may result in PV overshoot of the SP setting.
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.
UDC3500 Universal Digital Controller Product Manual
Monitoring and Operating the Controller
Description
187