DVC6200 Digital Valve Controller
Instruction Manual
June 2011
D103409X012
the instrument is in burst mode. Between each burst mode transmission sent by the instrument, a short pause allows the Field Communicator or control system to initiate a request. The instrument receives the request, processes the response message, and then continues “bursting” the burst mode data. D Burst Enable—Yes or no. Burst mode must be enabled before you can change the burst mode command. D Burst Command—There are four burst mode commands. Command 3 is recommended for use with the 333 HART Tri‐Loop HART‐to‐analog signal converter. The other three are not used at this time. D Cmd 3(Trending)Press—Command 3 provides the following variables: Primary variable—analog input in % or mA, Secondary variable—travel target in % of ranged travel, Tertiary variable—supply or output pressure in psig, bar, kPa, or kg/cm2. Select Select Cmd 3 Press from the Burst menu to select if the output A, output B, differential (A-B), or supply pressure is sent. Quaternary variable—travel in % of ranged travel.
Protection Protection Hot Key > Protection (Hot Key‐3) Field Communicator
Configure / Setup > Detailed Setup > Mode and Protection > Protection (1‐2‐1‐5)
Some setup parameters may require changing the protection with the Field Communicator. To remove protection (change protection to None) requires placing a jumper across the auxiliary terminals in the terminal box in order to change protection.
Note If the Aux Terminal Mode is configured for Auto Calibration, be sure the jumper remains across the auxiliary terminals until the Field Communicator prompts you to remove it. Removing the jumper too soon will cause the instrument to begin auto calibration. Auto calibration can be terminated by shorting the auxiliary terminals for one second.
WARNING If the jumper is removed too soon, and auto calibration begins, the valve will move full stroke. To avoid personal injury and property damage caused by the release of pressure or process fluid, isolate the valve from the process and equalize pressure on both sides of the valve or bleed off the process fluid.
Two levels of protection are available: D Config & Calib—Both setup and calibration are protected. Prohibits changing calibration and protected setup parameters. D None—Neither setup nor calibration is protected. Allows changing calibration and setup parameters. Table 4‐2 lists configurable parameters in the instrument and the requirements for modifying these parameters, in terms of instrument mode and protection.
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