Fisher IM Supplement: Using the HART Tri-Loop Converter with FIELDVUE Digital Valve Controllers Manuals & Guides
Instruction Manual Supplement
D103267X012
FIELDVUE Digital Valve Controllers
February 2020
Using the HARTR Tri‐Loop™ HART‐to‐Analog
™
Signal Converter with Fisher
FIELDVUE™ Digital
Valve Controllers
Tri‐Loop Signal Converter Operation with FIELDVUE Digital Valve
Controllers
The Rosemount™ 333U (alarm high) and 333D (alarm low) HART Tri‐Loop HART‐to‐Analog Signal Converter is used to
read values from the digital valve controller and present them as 4 to 20 mA signals accessible to AI channels on
traditional host systems. This device accepts a HART burst command 3 from a smart instrument and converts it into up
to three 4 to 20 mA analog output signals. The output signals then can be read by a control system's analog input
channels. Refer to the appropriate HART Field Device Specification instruction manual supplement for command 3
variables (see Related Fisher Documents on page 2).
Figure 1 shows a typical installation of the Tri‐Loop signal converter with a digital valve controller.
The Tri‐Loop signal converter may be used with the following FIELDVUE digital valve controllers:
D DVC6200 or DVC6000 HW2 digital valve controllers
Note
Burst mode communication is not supported with HART 7 in firmware revisions 2-6.
D DVC2000 digital valve controllers
D DVC6000 digital valve controllers
The Tri‐Loop signal converter outputs will go to their fail state when any of the following occur:
D there is a loss of burst mode communication from the smart instrument or
D there is a device malfunction reported by the smart instrument.
Loss of power to channel 1 will cause all channels to go to no output. Loss of power to either channel 2 or 3 will not
affect the remaining channels.
When in its fail state, a 333U signal converter generates a current of 21.75 mA or greater. A 333D generates a fail state
current which is less than 3.75 mA.
The Tri‐Loop signal converter is not recommended for FIELDVUE digital valve controller in split-range applications.
www.Fisher.com
FIELDVUE Digital Valve Controllers
February 2020
Instruction Manual Supplement
D103267X102
Installation Considerations
The Tri‐Loop HART‐to‐analog signal converter design allows three different din‐rail mounting options:
D Asymmetrical 32mm G rail
D Symmetrical 35 x 7.5 mm top hat rail
D Symmetrical 35 x 15 mm top hat rail
As shown in figure 1, the signal converter must be installed on the safe side of an Intrinsic Safety (IS) barrier. It is
approved for FM and CSA ordinary location, and bears the CE marking to indicate compliance with applicable EC
directives. It is not approved nor designed for nuclear‐qualified applications.
Figure 1 also shows a HART filter as a convenient connection point for the two additional connections to the loop
wires. The necessity of a HART filter depends upon the control system; the Tri‐Loop signal converter does not add a
requirement for a filter. If a filter is required, the HF340 din rail mount filter provides a convenient method for
connecting field wiring between the control system, the signal converter and the digital valve controller. If no filter is
required, the HF341 is available without filter action (straight‐through).
Related Fisher Documents
DVC6200 and DVC6200 SIS
D DVC6200 Series Digital Valve Controller Quick Start Guide (D103556X012)
D DVC6200 HW2 Digital Valve Controller Instruction Manual (D103605X012
D HART Field Device Specification for DVC6200 Digital Valve Controller (D103639X012
D DVC6200 HW1 Digital Valve Controller Instruction Manual (D103409X012
D HART Field Device Specification for DVC6000 and DVC6200 HW1 Digital Valve Controller (D103649X012
D DVC6200 SIS Digital Valve Controller Instruction Manual (D103557X012
D HART Field Device Specification for DVC6200 SIS Digital Valve Controller (D103638X012
DVC6000 HW2
D DVC6005 Series Remove Mount Digital Valve Controller Quick Start Guide (D103784X012)
D DVC6200 HW2 Digital Valve Controller Instruction Manual (D103785X012
D HART Field Device Specification for DVC6000 HW2 Digital Valve Controller (D103782X012
DVC2000
D DVC2000 Digital Valve Controller Quick Start Guide (D103203X012)
D DVC2000 Digital Valve Controller Instruction Manual (D103176X012
D HART Field Device Specification for DVC2000 Digital Valve Controller (D103783X012
)
)
)
)
)
)
)
)
)
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Miscellaneous
D HF340 Filter Instruction Manual (D102796X012)
2
Instruction Manual Supplement
FIELDVUE Digital Valve Controllers
D103267X012
DVC6000 (Supported)
D DVC6000 Digital Valve Controllers Instruction Manual (D102794X012)
D HART Field Device Specification for DVC6000 and DVC6200 HW1 Digital Valve Controller (D103649X012
February 2020
)
Documents are available from your Emerson sales office
or at Fisher.com.
Figure 1. Example HART Tri‐Loop HART‐to‐Analog Signal Converter Installation with a FIELDVUE DVC6200 Digital
Valve Controller
CHANNEL 1 MUST BE
POWERED FOR THE
TRI‐LOOP TO OPERATE
EACH TRI‐LOOP
CHANNEL RECEIVES
POWER FROM
CONTROL ROOM
CONTROL ROOM
VALVE TRAVEL
CHANNEL 2 CONFIGURED OUTPUT (OPTIONAL)
CHANNEL 3 CONFIGURED OUTPUT
(OPTIONAL)
BURST INPUT
HART
COMMUNICATION
CONNECTION
FIELD
INSTRUMENT
CONNECTION
HAZARDOUS AREANON‐HAZARDOUS AREA
ANALOG OUTPUT
CONTROLLING
DIGITAL VALVE
CONTROLLER
CONTROL
SYSTEM
CONNECTION
FISHER HF340 HART FILTER
USE AN HF340 IF FILTER
ACTION IS REQUIRED. USE AN HF341
IF NO FILTER ACTION IS REQUIRED.
−
+
−
+
INTRINSIC SAFETY
BARRIER
IF REQUIRED
BY APPLICATION
W9713
FIELDVUE DIGITAL
VALVE CONTROLLER
IN BURST MODE
(COMMAND 3)
3
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