Flowserve Logix MD+ ValveSight - Manual (Page 36)

ValveSight™ Diagnostics DTM Manual for Logix MD+ Positioner with HART®
FCD- LGENSF0014-00
© Flowserve Corporation
36
DTM.
Position Status
Soft Stop High Alert
•
Definition: The Final Command would move the valve beyond the
user-set Soft Limit, but the internal software is holding the position at
the limit.
•
Implications: The function is similar to a mechanical limit stop except it
is not active if the unit is un-powered.
•
Possible Solutions: If more travel is needed, reset the Soft Limits. If
not, adjust the Final Command signal back into the specified range.
Soft Stop Low Alert
•
Definition: The Final Command would move the valve beyond the
user-set Soft Limit, but the internal software is holding the position at
the limit.
•
Implications: The function is similar to a mechanical limit stop except it
is not active if the unit is un-powered.
•
Possible Solutions: If more travel is needed, reset the Soft Limits. If
not, adjust the Final Command signal back into the specified range.
Position High Limit Alert
•
Definition: The position has reached or is exceeding a user defined
upper position indicator.
•
Implications: This is similar to a limit switch indicator.
•
Possible Solutions: Set the limit to a higher value if more travel is
needed, or adjust the command signal back in the specified range.
Position Low Limit Alert
•
Definition: The position has reached or is exceeding a user defined
lower position indicator similar to a limit switch indicator.
•
Implications: This is similar to a limit switch indicator.
•
Possible Solutions: Set the limit to a lower value if more travel is
needed, or adjust the command signal back in the specified range.
Feedback Linkage Alarm
•
Definition: The feedback linkage is broken or the position feedback
POT is out of range.
•
Possible Solutions: Fix broken linkage or adjust feedback arm until full
motion is within the range of the POT.
Actuation Status