Flowserve Logix MD+ ValveSight - Manual (Page 117)

ValveSight™ Diagnostics DTM Manual for Logix MD+ Positioner with HART®
FCD- LGENSF0014-00
© Flowserve Corporation
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Command Frequency
The Command Frequency page allows you to view the current value and set warning limits
related to the command frequency detected by the positioner. The Command Frequency is
the number of times the command to the positioner changes direction in an hour.
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.
Command Frequency 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.