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04/08 UDC3200 Universal Digital Controller Operator Manual 55
Function
Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter
Definition
TO RUN
RUN—Contact closure starts a stopped SP Ramp or Program.
Upper left character blinks “R”. Reopening the contact puts
controller in HOLD mode.
This selection applies to either loop.
ToBEGIN
EXTERNAL SP PROGRAM RESET—Contact closure resets SP
Program back to the beginning of the first segment in the program
and places the program in the HOLD mode. Program cycle number
is not affected. Reopening switch has no effect.
This selection applies to either loop.
ATTENTION Once the last segment of the setpoint program has
timed out, the controller enters the mode of action specified in the
configuration data and the program cannot be reset to the
beginning of the first segment by digital input closure.
STOP I
INHIBIT INTEGRAL (RESET)—Contact closure disables PID
Integral (Reset) action.
MAN FS
MANUAL FAILSAFE OUTPUT—Controller goes to Manual mode,
output goes to the Failsafe value.
ATTENTION This will cause a bump in the output when switching
from Automatic to Manual. The switch back from Manual to
Automatic is bumpless. When the switch is closed, the output can
be adjusted from the keyboard.
TO LOCK
KEYBOARD LOCKOUT—Contact closure disables all keys.
Lower display shows LOCKED if a key is pressed.
TO Aout
AUTOMATIC OUTPUT—Contact closure sends output to the
value set at Control prompt AUTO OUT when the controller is in
the Automatic mode. Reopening the contact returns the controller
to the normal output.
ATTENTION Does not apply to Three Position Step Control.
TIMER
TIMER—Contact closure starts timer, if enabled. Reopening the
switch has no effect.
AM STA
TO AUTO/MANUAL STATION—Contact closure causes the
control loop to perform as follows:
PV = Input 2
Action = Direct
Control algorithm = PD+MR
PID SET = 2
SP = LSP 2
TO TUNE
INITIATE LIMIT CYCLE TUNING—Contact closure starts the
tuning process. The lower display shows TUNE ON. Opening the
contact has no effect.
SP Init
SETPOINT INITIALIZATION—Contact closure forces the setpoint
to the current PV value. Opening the contact has no effect.