Fisher FIELDVUE DVC6200 Instruction Manual page 14

Wiring Practices
February 2017
Commissioning the Digital Valve Controller for use with the HART
Tri‐Loop Signal Converter
To prepare the digital valve controller for use with a 333 HART Tri‐Loop, you must configure the digital valve controller
to burst mode, and select Burst Command 3. In burst mode, the digital valve controller provides digital information to
the HART Tri‐Loop HART‐to‐Analog Signal Converter. The HART Tri‐Loop converts the digital information to a 4 to 20
mA analog signal. Each burst message contains the latest value of the primary (analog input), secondary (travel
target), tertiary (configured output pressure), and quaternary (travel) variables.
To commission a DVC6200 for use with a HART Tri‐Loop, perform the following procedures.
Note
The DVC6200 must be in HART 5 compatibility mode to use burst communications.
Enable Burst Operation
With I/O Package
Configure > Manual Setup > Outputs > Burst Mode (2‐2‐6‐5) HC, AD, PD or (2-2-7-5) ODV
Field Communicator
Without I/O Package
Configure > Manual Setup > Outputs > Burst Mode (2‐2‐6‐2) HC, AD, PD or (2-2-7-2) ODV
Select Burst Enable and follow the prompts to enable burst mode. Then select Burst Command and follow the prompts
to configure Loop Current/PV/SV/TV/QV.
Select the HART Variable Assignments
With I/O Package
Configure > Manual Setup > Outputs > HART Variable Assignments (2-2-6-4) HC, AD, PD or (2-2-7-4) ODV
Field Communicator
Without I/O Package
Configure > Manual Setup > Outputs > HART Variable Assignments (2-2-6-1) HC, AD, PD or (2-2-7-1) ODV
Configure the HART Variable Assignments. The Primary Variable (PV) is always Analog Input. The Secondary Variable
(SV), Tertiary Variable (TV) and Quaternary Variable (QV) can be configured to any of the following variables.
D Setpoint
D Travel (see note below)
D Pressure A
D Pressure B
D Pressure A­B
D Supply Pressure
D Drive Signal
D Analog Input
Note
If the instrument is configured to operate in pressure control mode, or detects an invalid travel sensor reading, the Travel variable
will report pressure in percent of bench set range.
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Instruction Manual
D103605X012