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Travel Accumulation Alert
Accumulated travel is a good indication for valve wear. SVI FF provides two alerts, which are
used to report two different conditions:
Travel Accumulation A
Travel Accumulation B
Combined with the travel accumulation trend, this alert is used to schedule valve
maintenance procedures.
Cycle Counter
Cycle Counter is another good indication for valve usage and the SVI FF provides two alerts,
which are used to report two different conditions:
Cycle Counter A
Cycle Counter B
Combined with the Cycle Counter Trend, this alert is used to schedule valve maintenance
procedures.
Some examples of what can cause valve cycling are:
High friction
Process (setpoint) cycling
Improper positioner tuning
Valve controlled near Tight Open/Tight Close limit
Set Point Timeout
When the Transducer block is in Auto mode, a new setpoint is expected from the FOUNDATION
fieldbus protocol on a regular basis. This alert is used to detect FF communication problems.
Supply Pressure
Having a steady source of air is essential for the valve/positioner performance. The actual
value of the supply pressure is monitored and an alert is set if it is out of the limits. The
following limits provide different alerts:
HI Alert triggered by HI Alert Limit
LO Alert triggered by LO Alert Limit
LO LO Alert triggered by LO LO Alert Limit
Temperature
Temperature alerts monitor the positioner temperature and can generate a separate alert if
the temperature crosses the High or the Low limit.
Summary of Contents for Baker Hughes Masoneilan SVI FF
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