Variables - Fisher FIELDVUE DVC6200 Instruction Manual

Instruction Manual
D103605X012
When enabled, a partial stroke test may be initiated by the device (as a scheduled, auto partial stroke test), a remote
pushbutton located in the field or at the valve, a Field Communicator, or ValveLink software.
D Automatic (Scheduled)
The Auto Partial Stroke Test allows the partial stroke test to be scheduled by the DVC6200. The test is scheduled in
number of hours between tests. Any power cycle will reset the test clock timer.
D Local Pushbutton
A partial stroke test command may be sent to the digital valve controller using a set of contacts wired to the auxiliary
+/- terminals. To perform a test, the contacts must be closed for 3 to 5 seconds and then opened. To abort the test,
close the contacts for 1 second. The last set of diagnostic data is stored in the instrument memory for later retrieval via
ValveLink software.
D Field Communicator
1. Connect the Field Communicator to the LOOP terminals on the digital valve controller.
2. Turn on the Field Communicator.
3. From the Online menu, select Service Tools > Diagnostics > Partial Stroke Test.
4. Select either Standard (10%) or Custom. With the Custom Stroke Test, the stroke may be entered up to 30% with
configurable stroking speed and pause time.
5. The currently configured Stroke, Stroking Speed, and Pause Time is displayed. Choose "Yes" to run the test using
these values. Choose "No" to modify the values. The default value for Stroke Speed is 0.25%/second.
6. The valve begins to move and the actual travel reported by the digital valve controller is displayed on the Field
Communicator.
7. Once the valve has reached the endpoint, check that the valve has reached the desired set point. The valve should
return to its original position.
For information on configuring the Partial Stroke Test, see Partial Stroke Variables in the Detailed Setup section.

Variables

Field Communicator Service Tools > Variables (3-4)
The Variables section provides current values of the instrument variables. Below is a list of the variables available for
viewing:
D Write Protection (also provides a procedure to enable/disable)
D Instrument Mode (also provides a procedure to place in/out of service)
D Analog Input
D Setpoint
D Travel
D Drive Signal
D Input Characterization (also provides a procedure to modify)
D Cycle Counter
D Travel Accumulator
D Supply Pressure (not available in Instrument Level HC)
Device Information, Diagnostics, and Alerts
February 2017
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