Transducer Block
December 2009
4-31
Supply Pressure Lo Alert Enable
When enabled Supply Pressure Lo Alert Enable
activates Supply Pressure Lo Alert.
Supply Pressure Lo Alert Point
Supply Pressure Lo Alert Point
(SUP_PRES_LO_ALRT_PT [76.9]). When the supply
pressure falls below the supply pressure alert point,
the supply pressure alert is active. To disable the
supply pressure alert, set Supply Pressure Alert Point
to zero.
Temperature Limit
Temperature
Degrees Fahrenheit or Celsius. The temperature
(TEMPERATURE [48]) is measured from a sensor
mounted on the digital valve controller’s printed wiring
board.
Temperature Hi Alert
This alert is active if the temperature is greater than
the Temperature Hi Alert Point.
Temperature Hi Alert Enable
When enabled Temperature Hi Alert Enable activates
the Temperature Hi Alert.
Temperature Hi Alert Point
The Temperature Hi Alert is active when the
instrument temperature exceeds the Temperature Hi
Alert Point (TEMP_HI_ALRT_PT [76.6]).
Temperature Lo Alert
This alert is active if the temperature is lower than the
Temperature Lo Alert Point.
Temperature Lo Alert Enable
When enabled Temperature Lo Alert Enable activates
the Temperature Lo Alert.
Temperature Lo Alert Point
The Temperature Lo Alert is active when the
instrument temperature is lower than the Temperature
Lo Alert Point (TEMP_LO_ALRT_PT [76.7]).
Travel Alerts
(TB > Configure/Setup > Detailed Setup > Alerts >
Travel Alerts)
Note
The alerts contained in this section are
valid for both travel and pressure
control.
Travel Target
Travel target is the output from the characterization
function.
Travel
Travel (TRAVEL.VALUE [34.2]) displays the actual
position of the valve in percent (%) of calibrated travel.
Travel Deviation
Travel Deviation
Travel Deviation (TRAVEL_DEVIATION [52]) displays
the absolute difference in percent between Travel
Target and Actual Travel.
Travel Deviation Alert
This alert is active if the Travel deviation exceeds the
Travel Deviation Alert Point by more than the Travel
Deviation Time.
Travel Deviation Alert Enable
When enabled Travel Deviation Alert Enable actives
the Travel Deviation Alert.
Travel Deviation Alert Point
The Travel Deviation Alert Point (TVL_DEV_ALRT_PT
[77.1]) is the alert point for the difference, expressed in
percent (%), between the travel target and the actual
travel. When the difference exceeds the alert point for
more than the Travel Deviation Time, the Travel
Deviation Alert is set.
Travel Deviation Time
Travel Deviation Time (TVL_DEV_TIME [77.2]) is the
time, in seconds, that the travel deviation must exceed
the Travel Deviation Alert Point before the alert is set.
Travel Deviation Deadband
Travel Deviation Deadband (TVL_DEV_DB [77.3]) is
the travel in percent threshold (%) of ranged travel
required to clear a Travel Deviation alert, once it has
been set. See figure 4-2.
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