Fisher FIELDVUEDVC6200f Instruction Manual page 192

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)
Supply Press Sensor Supply Press
(Sensors) Sensor (Enabled)
(Maintenance)
Temperature Sensor Temperature
(Sensors) Sensor (Enabled)
(Maintenance)
Pressure Fallback Pressure Fallback
(Sensors) (Enabled)
(Maintenance)
Supply Pressure
Supply Press High
(Environment) (Enabled)
(Offspec)
Supply Press Low
(Enabled)
Temperature Limit Temperature High
(Environment)
(Enabled)
(Maintenance)
Temperature Low
(Enabled)
192
What the Alert is Detecting
(Default)
The pressure sensor reading is
outside the functional range of
the sensor.
The temperature sensor
reading is outside the
functional range of the sensor.
A travel sensor failure or large
travel deviation has resulted in
fallback to pressure control.
The supply pressure has
exceeded the Supply Pressure
Hi Alert Point.
The supply pressure is lower
than the Supply Pressure Lo
Alert Point.
The temperature is greater
than the Temperature Hi Alert
Point.
The temperature is lower than
the Temperature Lo Alert
Point.
Effect on Valve/Instrument
None - Indicates a possible
hardware problem that would
degrade diagnostic capability.
None - Indicates a possible
hardware problem that would
degrade instrument calibration
and diagnostic capability.
None - Indicates a reduced
performance condition.
None - Indicates a condition
that could cause damage to
the instrument or actuator.
None - Indicates a condition
that could reduce performance
or prevent the valve from
shutting tightly.
None - Indicates a condition
that could shorten service life
or lead to reduced
performance.
-Continued-
Instruction Manual
D103412X012
Recommended
Help
Action
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.
Replace PWB The temperature
assembly. sensor on‐board the
device has failed or the
unit has been exposed
to an temperature
extreme beyond the
recommended limits.
Check instrument The instrument has
feedback linkage detected that the travel
and travel sensor. sensor is outside its
normal range of
operation or that a
gross deviation exists
between set point and
actual travel. It has
switched to Pressure
Control and is no
longer using the travel
sensor to position the
valve.
Confirm proper air The actual supply
supply. pressure reading
exceeded or is below
the configured alert
setting
Check instrument The actual temperature
environment. reading at the on-board
temperature sensor
exceeded the
configurable
temperature limit.