Emerson Fisher Fieldvue DVC6030f Instruction Manual page 99

ALERT IS CLEARED
ALERT IS SET
A6532-1/IL
Figure 5-4. Travel Lo Alert Deadband
Tvl Config
(TB > Detailed Setup > Alerts >Tvl and Prox > Tvl
Config)
D Travel
Travel (TRAVEL.VALUE [34.2]) displays the actual
position of the valve in percent (%) of calibrated travel.
D Tvl Deviation
Travel Deviation (TRAVEL_DEVIATION [52]) displays
the absolute difference in percent between Travel
Target and Actual Travel.
D Tvl Dev Alrt Pt
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.
D Tvl Dev 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.
D Tvl Dev DB
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 5-5.
D Tvl Lo Lo Alrt Pt
The Travel Lo Lo alert is set when the value of the
travel, in percent (%) of ranged travel, goes below the
March 2006
TRAVEL ALERT
DEADBAND
TRAVEL ALERT
LO POINT
A6532/IL
Travel Lo Lo Alert Point (TVL_LO_LO_ALRT_PT
[77.12]).
Travel Lo Lo Deadband (TVL_LO_LO_DB [77.13]) is
the travel, in percent (%) of ranged travel, required to
clear a Travel Lo Lo alert once it has been set. See
figure 5-4.
The Travel Alert Lo alert is set when the value of the
travel, in percent (%) of ranged travel, goes below the
Travel Lo Alert Point (TVL_LO_ALRT_PT [77.14]).
Travel Lo Deadband (TVL_LO_DB [77.15]) is the
travel, in percent (%) of ranged travel, required to
clear a travel lo alert, once it has been set. See figure
5-4.
Travel Hi Alert is set if the ranged travel rises above
the Travel Hi Alert Point (TVL_HI_ALRT_PT [77.16]).
Once the alert is set, the ranged travel must fall below
the alert high point set by the Travel Hi Deadband
before the alert is cleared. See figure 5-5.
Travel Hi Deadband (TVL_HI_DB [77.17]) is the travel,
in percent (%) of ranged travel, required to clear a
Travel Hi Alert, once it has been set. See figure 5-5.
Travel Hi Hi Alert Point (TVL_HI_HI_ALRT_PT
[77.18]) is the value of the travel, in percent (%) of
ranged travel, which, when exceeded, sets the Travel
Alert Hi Hi alert.
Travel Hi Hi Deadband (TVL_HI_HI_DB [77.19]) is the
travel, in percent (%) of ranged travel, required to
clear a Travel Hi Hi alert, once it has been set. See
figure 5-5.
Transducer Block
ALERT IS SET
ALERT IS CLEARED
Figure 5-5. Travel Hi Alert Deadband
D Tvl Lo Lo DB
D Tvl Lo Alrt Pt
D Tvl Lo DB
D Tvl Hi Alrt Pt
D Tvl Hi DB
D Tvl Hi Hi Alrt Pt
D Tvl Hi Hi DB
TRAVEL ALERT
HIGH POINT
TRAVEL ALERT
DEADBAND
5
5-33