Fisher FIELDVUEDVC6200f Instruction Manual page 189

Instruction Manual
D103412X012
Table C‐2. Setting Field Diagnostic Alerts (continued)
Field Diagnostic Alert
(Group)
(Default Alert Category)
Cycle Counter
(Disabled)
Movement History
(Travel History)
(Offspec)
Travel Accumulator
(Disabled)
(1)
Performance Critical
Performance Critical
(Performance)
(Enabled)
(Failed)
(1)
Performance Reduced
Performance Reduced
(Performance)
(Enabled)
(Offspec)
(1)
Performance Information
Performance Information
(Performance)
(Enabled)
(Check)
Latch Active Latch Active
(Function Check) (Enabled)
PST Pass
(2)
PST Pass
(Enabled)
(2)
PST Abnormal PST Abnormal
(Maintenance) (Enabled)
FST Pass
(2)
FST Pass
(Enabled)
(2)
FST Abnormal FST Abnormal
(Maintenance) (Enabled)
Diagnostic in Progress Diagnostic in Progress
(Check) (Enabled)
PST Overdue
(Disabled)
(2)
Test Overdue
FST Overdue
(Disabled)
Stroke Open time
Stroke History exceeded
(Disabled)
Alert Condition
What the Alert is Detecting
(Default)
The number of travel reversals
has exceeded the configured
limit.
The accumulated travel has
exceeded the configured limit.
Critical performance issues
based on continuous PD tests
internal to the instrument.
Reduced performance issues
based on continuous PD tests
internal to the instrument.
Performance Information
based on continuous PD tests
internal to the instrument.
Either the position latch or the
setpoint latch is active.
A successful partial stroke test
was run
If the valve reached the
minimum travel point,
returned to the normal end and
some simple configuration
errors like when the set point
change is smaller than the
minimum PST travel point. The
user can add to this list of
evaluation criteria.
A successful full stroke test was
run.
If the valve reached the
opposite end, returned to the
normal end. The user can add
to this list of evaluation criteria.
A diagnostic is in progress (PST,
FST, Total Scan, Step
Response).
Time since the last good PST is
more than the configured PST
overdue threshold.
Time since the last good FST is
more than the configured FST
overdue threshold.
The measured open stroke
time is more than the
configured stroke open time
threshold.
Related Parameters
(Default)
Alert Point (1,000,000)
Deadband (1%)
Alert Point (1,000,000)
Deadband (1%)
None
None
None
None
Outgoing pressure threshold
Incoming pressure threshold
Breakout pressure threshold
Breakout Time
PST completion time
None
FST completion timeout
None
PST Overdue threshold
FST Overdue threshold
Stroke Open threshold
-Continued-
DVC6200f Digital Valve Controller
Field Diagnostic Alerts
Guidelines for Setting
Bellows Seal Bonnets— enable the
alert in the Maintenance Alert
Category. Use the bellows
manufacturer's cycle life data to set
cycle limits.
Packing Bonnets— enable the alert in
the Maintenance Alert Category.
When packing leaks are discovered,
set the Travel Accumulator alert to
90% of the current Travel
Accumulator Value, triggering an
alert prior to anticipated leak.
Use default setting
Use default setting
Use default setting
Use default setting
None
Enable the outgoing pressure
threshold and set the alert point.
None
Use default setting
Use default setting
Enable this alert for valves where
periodic PST is required.
Enable this alert for valves where
periodic PST is required.
Enable this alert for valves where
stroke open time is critical.
February 2017
189