Valve fault indication and control
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United States of America Patent
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Jun 4, 2013
Grant Date -
Sep 15, 2011
app pub date -
Mar 12, 2010
filing date -
Mar 12, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
According to aspects described herein, there is disclosed a method of and system for indicating a fault associated with a fluid valve moveable between an open and a closed operative position. The method and system compare a valve state indicator to a valve last command, wherein the valve state indicator represents a detected operative position of the valve and the valve last command being an operative command sent to the fluid valve. The method and system also initiate a fault indication after a predetermined time delay relative to the valve last command being sent and when the valve state indicator does not match the valve last command. After the time delay a fault indication can be initiated immediately upon receipt of a different valve state indicator.
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