Fisher FIELDVUEDVC6200f Instruction Manual page 194

DVC6200f Digital Valve Controller
Field Diagnostic Alerts
February 2017
Table C‐3. Using Field Diagnostic Alerts (continued)
Field Diagnostic Alert
Alert Condition
(Group)
(Default Alert Category)
(1)
Performance Reduced Performance
(Performance) Reduced (Enabled)
(Offspec)
(1)
Performance Information Performance
(Performance) Information
(Check) (Enabled)
Latch Active Latch Active
(Function Check) (Enabled)
(2)
PST Pass PST Pass
(Enabled)
(2)
PST Abnormal PST Abnormal
(Maintenance) (Enabled)
(2)
FST Pass FST Pass
(Enabled)
194
What the Alert is Detecting
(Default)
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 latchor 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.
Effect on Valve/Instrument
None - Indicates reduced
performance.
None - Indicates information
that may pertain to control
performance.
Valve will not respond to
setpoint changes until the latch
is cleared.
None
Valve may not go to the
demand position when
commanded.
None
-Continued-
Instruction Manual
D103412X012
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Help
Action
Check I/P, Relay, On‐board diagnostics
Valve, Actuator or have detected a
Ext. Tubing as performance issue that
indicated. has reduced control
performance. Check or
replace the component
indicated in the
possible cause detail.
No action On‐board diagnostics
required. have detected an
abnormal performance
condition. No
immediate action
required.
Position latch has
to be cleared
manually. Ensure
the supply
pressure is higher
than the threshold
and the output
block is normal
and then perform
a reset i.e. press
the reset button
or issue a reset
from the user
interface. Setpoint
Latch will follow
the user
configured reset,
if the transducer
block is targeted
to Auto.
Manual Reset:
Output block
initiated demand
will latch and need
to be cleared by
taking the output
block to normal
and issuing a reset
from the user
interface.
No action Informational, no
required. action required.
Identify the cause If the test was not
and address the cancelled then initiate
problem. another PST and check
if the valve moves
smoothly to its PST
target position and
returns to its normal
seat within the
configurable PST
completion time. Verify
that the supply
pressure low alert was
not active during the
test.
No action Informational, no
required. action required.