Fisher® FIELDVUE DVC6200 Digital Valve Controller

Device Information, Diagnostics, and Alerts
July 2012
Instruction Manual
D103605X012
Status
Calibration in Progress Alert—This alert is active when calibration is in progress.
AutoCal in Progress Alert—This alert is active when auto calibration is in progress.
Diagnostic in Progress Alert—This alert is active when a diagnostic test is in progress.
Diagnostic Data Available Alert—This alert is active when diagnostic data has been collected and is being stored in
the instrument.
Pressure Control Active Alert—This alert is active when the instrument is controlling like an I/P transducer (Pressure
Control instead of Travel Control).
Diagnostics
Stroke Valve
Follow the prompts on the Field Communicator display to select from the following:
Done—Select this if you are done. All ramping is stopped when DONE is selected.
Ramp Open—ramps the travel toward open at the rate of 1.0% per second of the ranged travel.
Ramp Closed—ramps the travel toward closed at the rate of 1.0% per second of the ranged travel.
Ramp to Target—ramps the travel to the specified target at the rate of 1.0% per second of the ranged travel.
Step to Target—steps the travel to the specified target.
Partial Stroke Test
Note
Partial Stroke Test is only available for instrument level ODV.
The Partial Stroke Test allows DVC6200 digital valve controllers with instrument level ODV to perform a Valve
Signature type of test while the instrument is in service and operational. In some applications, it is important to be able
to exercise and test the valve to verify that it will operate when commanded. This feature allows the user to partially
stroke the valve while continually monitoring the input signal. If a demand arises, the test is aborted and the valve
moves to its commanded position. The partial stroke valve travel is configurable between 1 and 30% maximum travel,
in 0.1% increments. Data from the last partial stroke test is stored in the instrument memory for retrieval by ValveLink
software.
The Partial Stroke Test allows you to perform a partial, 10%, stroke test (standard) or a custom stroke test. With the
custom stroke test, the stroke may be extended up to 30%. Be sure to check plant guidelines before performing a
custom stroke test. The purpose of this test is to ensure that the valve assembly moves upon demand.
A partial stroke test can be initiated when the valve is operating at either 4 or 20 mA (point‐to‐point mode). In
applications where a spurious trip is to be minimized, 4 mA is the normal operating position.
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