Flowserve Logix MD+ ValveSight - Manual (Page 65)

ValveSight™ Diagnostics DTM Manual for Logix MD+ Positioner with HART®
FCD- LGENSF0014-00
© Flowserve Corporation
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Friction
The Friction Tolerance Settings page allows you to adjust the warning and alarm limits
related to friction. Friction is the force required to move the valve assembly. Friction is
calculated by the positioner during normal operation or during a friction calibration.
Status Area
The Active Indicator area shows the status of the most relevant active indicator. The color
of the "LED light" corresponds to the Active Indicator and the first color of the blink code
sequence on the positioner. Generally green indicates no immediate issues. Yellow
indicates a developing issue. Red indicates the ability to control may be compromised. A
detailed list of the indicators is given in the
Alarm Congfiguraion - Alarm Annunicator page.
The Command Source field indicates weather the positioner is being controlled by digital or
an analog (4-20 mA) command source.
Friction Histogram
The graph displays a histogram with current values and a histogram with data gathered
during the training period. This is an easy way to see the range of typical values to set
meaningful warning and alarm limits. It is also helpful to see how the data may have shifted
since the training period. The histogram is frequently updated when the positioner is in
operation.