Emerson Fisher FIELDVUE DVC6000f, Instruction Manual

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DVC6000f Digital Valve Controllers
December 2009 4-34
Deadband Reference
Deadband (+/
−
5%)
Deadband exceeded, and direction
changed, new Reference Point
established
Point
Point at which
cycle is counted.
A6533-1/IL
Figure 4-4. Cycle Counter Deadband (set at 10%)
See figure 4-4. You can reset the Cycle Counter by
configuring it as zero.
Cycle Counter Alert
This alert is active if the Cycle Counter exceeds the
Cycle Counter Alert Point. It is cleared after you reset
the Cycle Counter to a value less than the alert point.
Cycle Counter Alert Enable
When enabled Cycle Counter Alert Enable activates
checking of the difference between the Cycle Counter
and the Cycle Counter Alert point.
Cycle Counter Alert Point
Cycle Counter Alert Point
(CYCLE_COUNT_ALRT_PT [77.6]) is the value of the
Cycle Counter, in cycles, which, when exceeded, sets
the Cycle Counter Alert.
Cycle Counter Deadband
Cycle Counter Deadband (CYCLE_COUNT_DB
[77.7]) is the area around the travel reference point, in
percent (%) of ranged travel, that was established at
the last increment of the Cycle Counter. This area
must be exceeded before a change in travel direction
can be counted as a cycle. See figure 4-4.
Travel Accumulator
Travel Accumulator
Travel Accumulator (TRAVEL_ACCUM [72]) records
the total change in travel, in percent (%) of ranged
travel, since the accumulator was last cleared. The
value of the Travel Accumulator increments when the
magnitude of the change exceeds the Travel
Accumulator Dead-band. See figure 4-5. You can
reset the Travel Accumulator by configuring it to zero.
Travel Accumulator Alert
This alert is active if the Travel Accumulator exceeds
the Travel Accumulator Alert Point. The Travel
Accumulator Alert is set when the Travel Accumulator
value exceeds the Travel Accumulator Alert Point. It is
cleared after you reset the Travel Accumulation to a
value less than the alert point.
Travel Accumulator Alert Enable
When enabled Travel Accumulator Alert Enable
activates checking of the difference between the
Travel Accumulator value and the Travel Accumulator
Alert Point.
Travel Accumulator Alert Point
Travel Accumulator Alert Point
(TVL_ACCUM_ALRT_PT [77.4]) is the value of the
Travel Accumulator, in percent (%) of ranged travel,
which, when exceeded, sets the Travel Accumulator
Alert.
Travel Accumulator Deadband
Travel Accumulator Deadband (TVL_ACCUM_DB
[77.5]) is the area around the travel reference point, in
percent (%) of ranged travel, that was established at
the last increment of the accumulator. This area must
be exceeded before a change in travel can be
accumulated. See figure 4-5.
Performance Alerts
(TB
>
Configure/Setup
>
Detailed Setup
>
Alerts
>
Performance Alerts)
Note
Performance Alerts are only available
with a PD tier instrument. Additionally,
for the PD alerts to function properly:
The transducer block mode must
not be out of service.
The travel/pressure control state
must be in travel control mode, and
Bench Set Hi, Bench Set Lo, and
Nominal Supply Pressure must be set
in the Spec Sheets, then enable the
Performance Information instrument
alert (PERF_ENABLE [75.7]).
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