Operation
48 UDC3300 Basic Model: DC33XB User Manual 12/00
4.10 Digital Input Option (Remote Switching)
The Digital Input option detects the state of external contacts for either of two inputs.
On contact closure, the controller will respond according to how each digital input is
configured. Make your selection under the Option Set Up group function prompt
“DIG IN1” or “DIG IN2.”
Table 4-11 Digital Input Option Action on Contact Closure
DIG IN1 or
DIG IN2
Selections
Display Indication Action on Contact Closure
Returns (toggles) to original state when contact
opens, unless otherwise noted.
None DI 1 2 always off*
No Digital Input selection
TO MAN MAN blinks
Puts the controller into manual mode.
TO LSP
Puts the controller into local setpoint 1.
TO 2SP RSP annunciator
blinks
Puts the controller into local setpoint 2.
TO 3SP RSP annunciator
blinks
Puts the controller into local setpoint 3.
TO DIR
Selects direct controller action.
ToHOLD H blinks
Suspends setpoint program or setpoint ramp operation.
ToPID2 PIDSET2 in lower
display
Selects PID set 2.
PV 2IN II (II blinks)
IN
Selects the PV to equal Input 2.
RERUN
Resets the Setpoint Program back to the beginning of the
first segment in the program and leaves the program in
the same Run Or Hold mode that it was in when the DI
closed. Opening the DI has no further effect.
TO RUN R indicator blinks
Starts a stopped SP Program.
ToBEGN
Resets the Setpoint Program back to the beginning of the
first segment in the program and places the program into
the Hold mode.
STOP I
Disables PID Integral (I) action.
MAN FS MAN blinks
Unit goes to manual mode, output goes to the failsafe
value.
ToLOCK LOCKED when a
key is pressed
Disables all keys.
ToAout
Output is forced to value set at control prompt “AUTO
OUT” when controller is in automatic mode.
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