Honeywell UDC2500 Product Manual page 85

Function Prompt
Lower Display
English Numeric
Code
4/07
Selection or Range of Setting
Upper Display
English Numeric
TIMR
TUNE
INIT
RSP
MNLT
TRAK
STRT
UDC2500 Universal Digital Controller Product Manual
Code
TIMER—Contact closure starts timer, if
12
enabled. Reopening the switch has no
effect.
INITIATE LIMIT CYCLE TUNING—Contact
13
closure starts the slow tuning process. The
lower display shows DoSLOW. Opening the
contact has no effect.
SETPOINT INITIALIZATION—Contact
14
closure forces the setpoint to the current PV
value. Opening the contact has no effect.
TO REMOTE SETPOINT—Contact closure
15
selects the Remote setpoint.
MANUAL LATCHING—Contact closure
16
transition forces the loop to Manual mode.
Opening the switch has no effect. If the M-A
RESET key is pressed while the switch is
closed, the loop will return to Automatic
mode.
OUTPUT TRACKS INPUT 2—Contact
17
closure allows Output to track Input 2. While
the switch is open, the output is in
accordance with its pre-defined functionality.
When the switch is closed, the output value
(in percent) will track the Input 2 percent of
range value. When the switch is reopened,
the output will start at this last output value
and normal PID action will then take over
control. The transfer is bumpless.
PV HOTSTART—Contact closure starts the
18
SP Ramp or SP Program at the original
selected starting Setpoint Value that existed
at the time that the SP Ramp or Program
was first started. Opening contact has no
effect. This configuration must be selected
prior to the first time the SP Ramp or
Program is placed in the RUN mode, as
otherwise the unit will not be able to capture
the initial Setpoint value. This selection
allows the unit to retain the initial Setpoint
value even if power to the unit is lost.
When the STATE selection in the SP Ramp
or Program Set Up group is set to HOLD and
the digital input contact is left closed, then
when the end of the program or ramp is
reached, the program or ramp will
Configuration
Parameter
Definition
71