Using PlantWeb Alerts
December 2009
C-5
Table C-2. Setting PlantWeb Alerts (Continued)
PlantWeb Alert
(Group)
(Default Alert Category)
Alert Condition
and (Default)
What the Alert is
Detecting
Related Parameters and
(Default)
Guidelines for Setting
Travel Sensor
(Sensors)
(Failed)
Travel Sensor
(Enabled)
The travel feedback is within
acceptable limits.
Self Test Shutdown (No)
Shutdown Recovery (Auto)
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.
IIf 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.
Output Press Sensor
(Sensors)
(Maintenance)
Port A Pressure
Sensor (Enabled)
The pressure sensor reading
is outside the functional range
of the sensor.
Self Test Shutdown (No)
Shutdown Recovery (Auto)
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.
Port B Pressure
Sensor (Enabled)
None Use default settings
Supply Press Sensor
(Sensors)
(Advisory)
Supply Press
Sensor (Enabled)
The pressure sensor reading
is outside the functional range
of the sensor.
None Use default settings
Temperature Sensor
(Sensors)
(Advisory)
Temperature Sensor
(Enabled)
The temperature sensor
reading is outside the
functional range of the sensor.
None Use default settings
Pressure Fallback
(Sensors)
(Maintenance)
Pressure Fallback
(Enabled)
A travel sensor failure or large
travel deviation has resulted in
fallback to pressure control.
None Use default settings
Supply Pressure
(Environment)
(Maintenance)
Supply Press High
(Enabled)
The supply pressure has
exceeded the Supply
Pressure Hi Alert Point.
Alert Point (145 psig)
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.
Supply Press Low
(Enabled)
The supply pressure is lower
than the Supply Pressure Lo
Alert Point.
Alert Point (19 psig)
Enable the alert in the Maintenance Alert
Category.
Double Acting Actuators— Set the
Alert Point above the minimum required
for valve shutoff and no greater than
1 psig below
the supply regulator setting
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.
−Continued−
C
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