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Section 4: Operation
February 2018
4.1.1
Graphics Display and Message Center
The graphics display shows the mode of operation, valve status, position, torque,
and alarm symbols. The message center displays actuator setup selections, data
entry feedback, and alarm messages. When no alarms are active and the valve is
not moving or is not at either limit, the message center will be blank.
4.1.2
Control Knob and Selector Knob
The control knob performs normal Open/Stop/Close function in the local control
mode and YES/NO function in the "MONITOR/SETUP" mode as detailed in Table 4-1.
The NO selection increments the displayed value but does not decrement.
To decrement continuously hold the NO position until the highest value is reached.
The display value will then start at the lowest value and increment from there. If the
control knob is held in the NO position for more than 2 seconds the incrementing
rate will increase from 0.5 seconds per new value to 0.1 seconds per value.
The selector knob performs normal selector switch Local/Stop/Remote function
and alternate Next/Back display function in the "MONITOR/SETUP" mode as
detailed in Table 4-1.
The NEXT and BACK selections are used strictly for cycling through the SETUP
displays to locate the desired display or to exit the "SETUP" mode.
Table 4-1.
NOTE:
If the selector knob remains in either NEXT or BACK position, the display will scroll.
4.1.3
LEDs
There are three LEDs on the LDM:
•
•
•
The default function of these LEDs is detailed in Table 4-2.
See Section 5.5.2, Valve Control Setup to reverse Red to indicate closed/closing
and Green to indicate opened/opening.
30
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LDM Rotating Knobs
Knob
Rotation Direction Function
Spring return to
center
Clockwise
(CLOSE)
Control
Counterclockwise
(OPEN)
Selector
STOP
Clockwise
(REMOTE)
Counterclockwise
(LOCAL)
Red
Green
Yellow
Installation and Operation Manual
Result
Completes YES or NO entry cycle.
Neutral
Exception: when knob is held for
Position
continuous data entry updates.
Accepts the displayed question or
data entry. Advances to the next
YES
display.
Exception: when knob is held for
continuous data entry updates.
Rejects displayed question or data.
Increments to the next data value or
NO
display. Exception: when knob is
held for continuous data entry
updates.
Neutral
Sets up entry, completes NEXT or
Position
BACK entry cycle. See Note below
NEXT
Advances to the next display
BACK
Returns to the previous display
E2K-405-0218 Rev. 2
Operation
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