Emerson Fisher FIELDVUE DVC6000f Instruction Manual page 328

DVC6000f Digital Valve Controllers
PlantWeb Alert
(Group)
(Default Alert Category)
Temperature Limit
(Environment)
(Advisory)
Travel Deviation
(Travel)
(Maintenance)
Travel Limit
(Travel)
(Advisory)
N/A
C (Travel)
(N/A)
N/A
(Proximity)
(N/A)
Cycle Counter
(Travel History)
(Maintenance)
C-6
Table C-2. Setting PlantWeb Alerts (Continued)
Alert Condition What the Alert is
and (Default) Detecting
The temperature is greater
Temperature High
than the Temperature Hi Alert
(Enabled)
Point.
The temperature is lower than
Temperature Low
the Temperature Lo Alert
(Enabled)
Point.
The Travel Deviation has
Travel Deviation exceeded the Travel Deviation
(Enabled) Alert Point by more than the
Travel Deviation Time.
Travel Limit Hi Hi The Travel has exceeded the
(Disabled) Travel Limit Hi Hi Alert Point
Travel Limit Lo Lo The Travel is lower than the
(Disabled) Travel Limit Lo Lo Alert Point.
Travel Limit Hi The Travel has exceeded the
(Disabled) Travel Limit Hi Alert Point.
Travel Limit Lo The Travel is lower than the
(Disabled) Travel Limit Lo Alert Point.
Travel Open The Travel is greater than the
(Disabled) Open Alert Point
Travel Closed The Travel is greater than the
(Disabled) Closed Alert Point
Proximity Hi Hi
(Disabled)
Proximity Hi
The Travel is within the
(Disabled)
configured band of the
Proximity Lo
configured center point.
(Disabled)
Proximity Lo Lo
(Disabled)
The number of travel
Cycle Counter
reversals has exceeded the
(Disabled)
configured limit.
Related Parameters and
(Default)
Alert Point ( 186_C)
Alert Point ( −63_C)
Alert Point (5%)
Alert Time (10 sec)
Deadband (2%)
Alert Point (125%)
Deadband (5%)
Alert Point (−25%)
Deadband (5%)
Alert Point (125%)
Deadband (5%)
Alert Point (−25%)
Deadband (5%)
Alert Point (99.5%)
Deadband (5%)
Alert Point (0.5%)
Deadband (5%)
Alert Point (125%)
Deadband (5%)
Alert Point (125%)
Deadband (5%)
Alert Point (−25%)
Deadband (5%)
Alert Point (−25%)
Deadband (5%)
Alert Point (1,000,000)
Deadband (1%)
−Continued−
Guidelines for Setting
Use default settings
Other alert points may be chosen to
indicate changes in the instrument
environment.
Enable the alert in the Maintenance Alert
Category. Set the Alert Point at −40_F if
the instrument uses Nitrile elastomers
and −63_F if it uses Fluorosilicone
elastomers.
Other alert points may be chosen to
indicate changes in the instrument
environment.
Enable the alert in the Maintenance Alert
Category. Use the default settings with
valves that are 4 inch and smaller with
PTFE packing systems.
With other valves, the user can refine
the settings with ValveLink software
Dynamic Error Band and Step Response
Tests. Set the related parameters as
follows:
Tvl Dev Alert Point—set equal times 2
the Maximum Dynamic Error, minimum
3%
Tvl Dev DB—set equal to the Dynamic
Error Band, minimum 2%
Tvl Dev Time—set equal to the T98 time
for a Step Test from 0 to 100% Travel,
minimum 10 seconds.
Enable this alert for critical loops, where
it is important to alert an operator if the
valve is approaching the wide open
position. A typical setting might be 95%.
Enable this alert for critical loops, where
it is important to alert an operator if the
valve is approaching the closed position.
A typical setting might be 5%.
Use the Alert Points and Deadband to
configure the Proximity Alerts below.
Use the Alert Points and Deadband to
configure the Proximity Alerts below.
Enable and set to report Travel with DI
Block
Enable and set to report Travel with DI
Block
Enable and set to report Travel with DI
Block
Enable and set to report Travel with DI
Block
Enable and set to report Travel with DI
Block
Enable and set to report Travel with DI
Block
Bellows Seal Bonnets— enable the alert
in the Maintenance Alert Category. Use
the bellows manufacturer's cycle life
data to set cycle limits.
December 2009