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UDC2800 Universal Digital Controller Quick Start Guide
Lower Display Description
OUT XXX.X
Output value is shown in percent with one decimal point when Control Algorithm is NOT configured as Three
Position Step Control (TPSC), and Slidewire is connected.
OUT XXX
Output value is shown in percent with no decimal point when Control Algorithm is NOT configured as Three
Position Step Control (TPSC), Output Algorithm is configured as Position Proportion, and Slidewire fails.
COUT XXX.X
Appears when Shed function is Enabled, and Output Override register is successful override by Modbus (In Slave
Mode) .
EOUT XXX.X
Appears when Shed function is Enabled, and the controller is in Slave Mode, push A/M key to enter Emergency
Mode.
POS XXX
Slidewire Position – Used only with TPSC applications that use a slidewire input.
SP XXXX.XXX
Local Setpoint #1, appears when Control Algorithm is configured as ANY algorithm except Disable in the
Algorithms set up group.
It also appears for current setpoint when using SP Ramp.
2SP XXXX.XXX
Local Setpoint #2, appears when the following two conditions are satisfied:
• In the Algorithms set up group, configure Control Algorithm as ANY algorithm except Disable.
• In the Control set up group, configure Local SP Source as 2/3/4 Local SPs.
3SP XXXX.XXX
Local Setpoint #3, appears when the following two conditions are satisfied:
• In the Algorithms set up group, configure Control Algorithm as ANY algorithm except Disable.
• In the Control set up group, configure Local SP Source as 3/4 Local SPs.
4SP XXXX.XXX
Local Setpoint #4, appears when the following two conditions are satisfied:
• In the Algorithms set up group, configure Control Algorithm as ANY algorithm except Disable.
• In the Control set up group, configure Local SP Source as 4 Local SPs.
RSP XXXX.XXX
Remote Setpoint, appears when the following two conditions are satisfied:
• In the Algorithms set up group, configure Control Algorithm as ANY algorithm except Disable.
• In the Control set up group, configure Remote SP Source as ANY selection except Disable.
CSP XXXX.XXX
Computer Setpoint, when SP is in override.
• In the Algorithms set up group, configure Control Algorithm as ANY algorithm except Disable.
• In the Communication set up group, enable Shed Function. And CSP is successfully override by SP override
through Modbus.
SPN XXXX.XXX
Setpoint Now—Current Setpoint when SP Rate is enabled. The SP XXXX.XXX display shows the “target” or final
setpoint value.
SPN is not equal with the target SP.
DEV XXX.X
Deviation
1 IN XXXX.XXX
Input 1—Used only with combinational input algorithms.
2 IN XXXX.XXX
Input 2
PID Set X
Tuning Parameter, where X is either 1, 2, 3 or 4.
BIAS XXXX
BIAS, displays the manual reset value for algorithm PD+MR.
AUX XXX.X
Auxiliary Output, displayed only when output algorithm is not Current Duplex.
TEL O XXH: XXM
Or
TEL O XXM: XXS
Elapsed Time, time that has elapsed on the Timer in Hours: Minutes, or Minutes: Seconds.
The "O‘ is a clockwise running clock.
TRE O XXH: XXM
Or
TRE O XXM: XXS
Time Remaining, time remaining on the Timer in Hours: Minutes, or Minutes: Seconds.
The "O" is a counter-clockwise running clock.
RAMP XXXM: XXS
Setpoint Ramp Time—Time remaining in the Setpoint Ramp in minutes.
PXSX RA XXH:XXM:XXS
PXSX RA XXX/M (0~999)
PXSX RA XXX/H (0~999)
Program X(1-8) Segment X(1-8) Ramp XXH:XXM:XXS remaining
X and XX is current program or segment or time remaining
Initial hold states Ramp time should be remaining time
PXSX SK XXH:XXM:XXS Program X(1-8) Segment(1-8) Soak XXH:XXM:XXS remaining
X and XX is current program or segment or time remaining
Initial hold states Soak time should be remaining time
Recycle 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
ACTU TUNE OFF
Limit Cycle Tuning not Running, appears when Accutune is enabled but not operating.
ACTU 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.
ACTU 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.
Notices
For support, contact your local Honeywell Process Solutions Customer Contact Center (CCC). To find your local CCC visit the website,
https://www.honeywellprocess.com/en-US/contactus/customer-support-contacts/Pages/default.aspx.
Viewing the operating parameters
Under the main screen, press the Lower Display key to scroll through the operating parameters listed in table below. The lower display will
show only those parameters and their values that apply to your specific model.
51-52-25-158, Revision 3.0
June 2022
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