Fisher FIELDVUEDVC6200f Instruction Manual page 136

DVC6200f Digital Valve Controller
Viewing Device Variables and Diagnostics
February 2017
Travel Diagnostic Info
Drive Signal (DRIVE_SIGNAL [78]) indicates the drive signal, as a percentage of the maximum drive available, going to
the I/P converter from the printed wiring board. In most applications, the drive signal ranges between 50% and 75% of
the maximum drive signal.
Cycle Counter (CYCLE_CNTR [39]) records the number of times the travel changes direction. The change in direction
must occur after the deadband has been exceeded before it can be counted as a cycle.
Travel Accumulator (TRAVEL_ACCUM [29]) indicates the total change in travel, in percent of ranged travel. The
accumulator only increments when travel exceeds the deadband. Then the greatest amount of change in one
direction from the original reference point (after the deadband has been exceeded) will be added to the Travel
Accumulator.
Travel Count (TVL_COUNT [71.1]) is the Travel Sensor readback displayed in A/D counts.
Reset Travel History
Pressures
Supply (SUPPLY_PRESSURE.VALUE [61.2]) shows the value of the supply pressure.
Pressure A (PRESSURE_A.VALUE [62.2]) shows the value of Output Pressure A.
Pressure B (PRESSURE_B.VALUE [63.2]) shows the value of Output Pressure B.
A Minus B (PRESSURE_DIFF.VALUE [64.2]) shows the value of the output pressure differential.
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Instruction Manual
D103412X012