Using Field Diagnostic Alerts - Fisher FIELDVUEDVC6200f Instruction Manual

DVC6200f Digital Valve Controller
Field Diagnostic Alerts
February 2017
Table C‐2. Setting Field Diagnostic Alerts (continued)
Field Diagnostic Alert
(Group)
(Default Alert Category)
Stroke close time
Stroke History exceeded
(Disabled)
Automatic PST Pending
(2)
PST Pending
(Enabled)
1. Performance Alerts are only available with a PD or a PST instrument.
2. FST/PST Alerts are only available with a PST instrument.

Using Field Diagnostic Alerts

Refer to table C‐3 for information on using Field Diagnostic alerts.
Table C‐3. Using Field Diagnostic Alerts
Field Diagnostic Alert
Alert Condition
(Group)
(Default Alert Category
Drive Current Drive Current
(Electronics) (Enabled)
(Failed)
Drive Signal Drive Signal
(Electronics) (Enabled)
(Offspec)
Processor Impaired Program Memory
(Electronics) (Enabled)
(Failed)
Static Memory
(Enabled)
Processor
(Enabled)
I/O Processor
(Enabled)
190
Alert Condition
What the Alert is Detecting
(Default)
The measured close stroke
time is more than the
configured stroke close time
threshold.
An automatic PST is due sooner
than the configured PST
Pending alert time
What the Alert is Detecting
(Default)
The difference between the
expected Drive Current and the
actual Drive Current has
exceeded the Drive Current
Alert Time.
If one of the following
conditions exist for 20 seconds:
Where Zero Power Condition is
defined as closed:
Drive Signal 10% and
<
Calibrated Travel
Drive Signal 90% and
>
Calibrated Travel
Where Zero Power Condition is
defined as open:
Drive Signal 10% and
<
Calibrated Travel
Drive Signal 90% and
>
Calibrated Travel
A pending Flash or NVM failure
is present.
A failure of the FRAM memory
where static parameters are
stored.
A failure of the main Processor.
A failure of the I/O Processor.
Related Parameters
Stroke Close threshold
PST Pending Alert Time
Effect on Valve/Instrument
If configured for Self Test
Shutdown, then the transducer
Actual mode is placed Out of
Service until the problem is
fixed. Out of Service results in
the instrument output
pressure(s) and actuator
position being at the Zero
Power Condition.
None - Indicates reduced
performance.
3%
>
97%
<
97%
<
3%
>
If configured for Self Test
Shutdown, then the transducer
Actual mode is placed Out of
Service until the problem is
fixed. Out of Service results in
the instrument output
pressure(s) and actuator
position being at the Zero
Power Condition.
-Continued-
Instruction Manual
Guidelines for Setting
(Default)
Enable this alert for valves where
stroke close time is critical.
Enable this alert when using auto PST
and configure an alert time that
allows enough time for the operator
to safely run a PST when the process
permits.
Recommended
Action
Check I/P module
Check instrument
pneumatics
Replace PWB
assembly
D103412X012
Help
The instrument has
detected that the
difference between the
expected Drive Current
and the actual Drive
Current is greater than
the configured limit for
more than the
configured time
1) Replace the I/P
module
2) Calibrate the device.
If the problem persists,
replace the printed
wiring board (PWB)
assembly.
The instrument I/P
drive signal necessary
to generate the
pressure output from
the instrument is not
within the expected
range. Potential causes
include I/P filter
plugged, instrument
pneumatic relay failure,
low supply pressure, air
leaks, or valve sticking.
Test the control valve
assembly for proper
operation. ValveLink
diagnostics can be used
for this purpose.
An error has been
detected in the printed
wiring board (PWB)
assembly. Replace the
PWB assembly.