Fisher FIELDVUEDVC6200f Instruction Manual page 191

Instruction Manual
D103412X012
Table C‐3. Using Field Diagnostic Alerts (continued)
Field Diagnostic Alert
Alert Condition
(Group)
(Default Alert Category
Check Output Block
Timeout
(Enabled)
Transducer Block
Mode error
Travel Sensor Travel Sensor
(Sensors) (Enabled)
(Failed)
Output Press Sensor
Port A Pressure
(Sensors)
Sensor (Enabled)
(Offspec)
Port B Pressure
Sensor (Enabled)
What the Alert is Detecting
(Default)
If the analog or discrete output
block has not executed for
longer than the configured
timeout.
When there is a mismatch
between the Transducer Block
Normal, target and actual
modes.
The travel feedback is within
acceptable limits.
The pressure sensor reading is
outside the functional range of
the sensor.
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.
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 actuator being at the Zero
Power Condition.
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 actuator being at the "No
Power" condition.
None - Indicates a possible
hardware problem that would
degrade diagnostic capability.
-Continued-
DVC6200f Digital Valve Controller
Field Diagnostic Alerts
Recommended
Action
Check Output To correct try the
Block following, in order,
until the issue is
resolved.
1. Verify that the
Transducer block's
target and actual
modes are equal to its
normal mode (typically
AUTO).
2. Verify that the
Output Block Timeout
time is at least twice
the macro cycle
3. Perform a download
from the controller
1. Verify that the
Transducer block's
target and actual
modes are equal to its
normal mode (typically
AUTO).
Check mounting Travel feedback value is
and linkage outside expected
limits. If this problem
occurs during
instrument set‐up, the
most likely cause is
faulty mounting or
improper adjustment
of the travel sensor. If
this problem occurs
during normal
operation, the most
likely cause is a failure
of the travel sensor or
damaged linkage.
To correct,
1) Insure proper
mounting and linkage
adjustment.
2) Inspect and test
travel sensor
3) Toggle the
transducer target
mode.
If the problem persists,
replace the printed
wiring board (PWB)
assembly.
Confirm proper air The pressure sensor
supply on‐board the device
has failed. This may be
due to excessive supply
pressure or
contaminated air.
If it is verified that the
air supply is ok, replace
the printed wiring
board (PWB) assembly.
February 2017
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