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Chapter 4: Communication-Based Operation
4.8.3 Valve Diagnostic Status
Select [Diagnostics] >> [Valve Diagnostic Status]. You will be able to check the status
conditions shown below. If the value of an item is ON, an alarm was triggered.
Status Details
Stick Slip Alarm The Stick Slip Alarm occurs when the valve exhibits stick and slip
movement.
Total Stroke Alarm The Total Stroke Alarm occurs when the total distance of the valve
plug/stem stroke movement exceeds the threshold.
Cycle Count Alarm The Cycle Count Alarm occurs when the number of control valve
reverse operation cycles exceeds the threshold
0% Tvl Error + Alarm The 0% Tvl Error + Alarm occurs when there is upward deviation
between current 0% travel angle and initial 0% travel angle.
0% Tvl Error − Alarm The 0% Tvl Error − Alarm occurs when there is downward deviation
between current 0% travel angle and initial 0% travel angle.
Shut-Off Count Alarm The Shut-Off Count Alarm occurs when the total number of valve
closures exceeds the threshold.
Max Tvl Speed + Alarm The Max Tvl Speed + Alarm occurs when the maximum stem
movement speed in the upward direction in a day exceeds the
threshold.
Max Tvl Speed − Alarm The Max Tvl Speed − Alarm occurs when the maximum stem
movement speed in the downward direction in a day exceeds the
threshold.
Deviation + Alarm The Deviation + Alarm occurs when there is a positive deviation
between current travel (%) and input signal (%).
Deviation − Alarm The Deviation − Alarm occurs when there is a negative deviation
between current travel (%) and input signal (%).
Temp High Alarm The Temp High Alarm occurs when the measured temperature
exceeds the upper threshold.
Temp Low Alarm The Temp Low Alarm occurs when the measured temperature falls
below the lower threshold.
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