Fisher FIELDVUEDVC6200f Instruction Manual page 187

Instruction Manual
D103412X012
Table C‐2. Setting Field Diagnostic Alerts (continued)
Field Diagnostic Alert
(Group)
(Default Alert Category)
Travel Sensor
Travel Sensor
(Sensors)
(Enabled)
(Failed)
Port A Pressure Sensor
Output Press Sensor
(Enabled)
(Sensors)
(Offspec)
Port B Pressure Sensor
(Enabled)
Supply Press Sensor
Supply Press Sensor
(Sensors)
(Enabled)
(Maintenance)
Temperature Sensor
Temperature Sensor
(Sensors)
(Enabled)
(Maintenance)
Pressure Fallback
Pressure Fallback
(Sensors)
(Enabled)
(Maintenance)
Supply Press High
(Enabled)
Supply Pressure
(Environment)
(Offspec)
Supply Press Low
(Enabled)
Alert Condition
What the Alert is Detecting
(Default)
The travel feedback is within
acceptable limits.
The pressure sensor reading is
outside the functional range of
the sensor.
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.
Related Parameters
(Default)
Self Test Shutdown (No)
Shutdown Recovery (Auto)
Self Test Shutdown (No)
Shutdown Recovery (Auto)
None
None
None
None
Alert Point (145 psig)
Alert Point (19 psig)
-Continued-
DVC6200f Digital Valve Controller
Field Diagnostic Alerts
Guidelines for Setting
Double Acting Actuators— Enable the
alert and configure it to report in the
Failed Alert Category. Self Test
Shutdown is generally not enabled.
Single Acting Actuators—
If Travel / Pressure Control is
configured as Travel with Pressure
Fallback: enable the alert and
configure it to report in the
Maintenance Alert Category. Do not
enable Self Test Shutdown.
If Travel / Pressure Control is
configured as Travel: Enable the alert
and configure it to report in the Failed
Alert Category. Self Test Shutdown is
generally not enabled.
If Travel / Pressure Control is
configured as Pressure: enable the
alert and configure it to report in the
Failed Alert Category. Enable the Self
Test Shutdown.
For all other Travel / Pressure Control
selections, enable the alert to report
in the Maintenance Alert Category
and do not enable the Self Test
Shutdown.
Use default settings
Use default settings
Use default settings
Use default settings
Enable the alert in the Maintenance
Alert Category. Set the Alert Point to
which ever is lower of
a. the maximum instrument
pressure of 145 psig or
b. the maximum actuator casing
pressure. Or
c. set to 5 psig over supply
pressure.
Enable the alert in the Offspec Alert
Category.
Double Acting Actuators— Set the
Alert Point above the minimum
required for valve shutoff and no
greater than 3 psig below supply
pressure.
Single Acting Actuators— Set the
Alert Point above the minimum
required for valve shutoff and no
greater than 1 psig below the supply
regulator setting. This is generally
about 3 psig above the actuator
upper bench set (stroking) pressure.
February 2017
187