Digital Input Option (Remote Switching); Table 5-26 Digital Input Option Action On Contact Closure - Honeywell DR4500A Product Manual

5.12 Digital Input Option (Remote Switching)

Introduction
The digital input option detects the state of external contacts wired to it. On contact closure, the recorder
responds according to how each digital input is configured.
Make your selection under Set Up group "CONTROL1" or "CONTROL2", function group prompt

"REM SW": see Subsection 3.10—Table 3-7 or Subsection 4.6—Table 4-5.
Action on contact closure
T able 5-26 lists the configuration prompt selections, the "Action on Contact Closure", and the display
8 4 H
indication for each selection available.
REM SW
Selections
None
To MAN
To LSP
To 2SP
To DIR
RN/HOLD
TUNE
Keyboard operation
If a particular mode or parameter is selected by the contact closure, using the keyboard to select the same
parameter ensures that the selected mode will be maintained after the remote digital switch is reopened.
Release M DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
April 2017

Table 5-26 Digital input option action on contact closure

Display Indication
None
"MAN" blinks
"RSP" blinks
"RSP" blinks
None
"H" blinks in upper display
TUNING x
Operation - Digital Input Option (Remote Switching)
Action on Contact Closure
No Digital Input selection
Puts the recorder into manual mode; contact open
returns the recorder to former mode unless AUTO/MAN
key is pressed while digital input is active.
Puts the recorder into local setpoint 1(switches out of
remote). When contact opens, the recorder returns to
former operation unless the FUNC key is pressed while
digital input is active.
Puts the recorder into local setpoint 2.
Selects direct controller action (transfer if in reverse).
Suspends setpoint program or setpoint ramp.

Keyboard takes priority over external switch for
RUN/HOLD function.

Contact open runs the program or ramp.

If initially in the HOLD state, close then open the
contact to remotely start the SP ramp or program.
Initiates Accutune.
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