Note
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use, or maintenance of any product. Responsibility for the selection, use, and maintenance of any product remains with the purchaser and end-user.

Available Configurations

Valve-Mounted Instrument:
DVC6010: Sliding-stem applications
DVC6020: Rotary applications and long-stroke sliding-stem applications
DVC6030: Quarter-turn rotary applications
Remote-Mounted Instrument (1):
DVC6005: Base unit for 2-inch pipestand or wall mounting
DVC6015: Feedback unit for sliding-stem applications
DVC6025: Feedback unit for rotary or long-stroke sliding-stem applications
DVC6035: Feedback unit for quarter-turn rotary applications
DVC6000 Series digital valve controllers can be mounted on Fisher and other manufacturers rotary and sliding-stem actuators.

Input Signal

Point-to-Point:.
Analog Input Signal: 4-20 mA DC, nominal; split ranging available
Minimum Voltage Available at Instrument Terminals must be 10.5 VDC for analog control, 11 VDC for HART communication (see instrument instruction manual for details)
Minimum Control Current: 4.0 mA
Minimum Current w/o Microprocessor Restart: 3.5 mA
Maximum Voltage: 30 VDC
Overcurrent Protection: Input circuitry limits current to prevent internal damage
Reverse Polarity Protection: No damage occurs from reversal of loop current
Multi-drop:.
Instrument Power: 11 to 30 VDC at
approximately 8 mA
Reverse Polarity Protection: No damage occurs from reversal of loop current

Output Signal

Pneumatic signal as required by the actuator, up to 95% of supply pressure
Minimum Span: 0.4 bar (6 psig)
Maximum Span: 9.5 bar (140 psig)
Action: ■Double, ■Single Direct, and ■Single Reverse

Supply Pressure(2)

Minimum Recommended: 0.3 bar (5 psig) higher than maximum actuator requirements
Maximum: 10.0 bar (145 psig) or maximum pressure rating of the actuator, whichever is lower

Steady-State Air Consumption(3,4)

Standard Relay: At 1.4 bar (20 psig) supply pressure: Less than 0.38 normal m3/hr (14 scfh)
At 5.5 bar (80 psig) supply pressure: Less than 1.3 normal m3/hr (49 scfh)
Low Bleed Relay(5): At 1.4 bar (20 psig) supply pressure: Average value 0.056 normal m3/hr (2.1 scfh)
At 5.5 bar (80 psig) supply pressure: Average value 0.184 normal m3/hr (6.9 scfh)

Maximum Output Capacity(3,4)

At 1.4 bar (20 psig) supply pressure: 10.0 normal m3/hr (375 scfh)
At 5.5 bar (80 psig) supply pressure: 29.5 normal m3/hr (1100 scfh)

Independent Linearity(6)

±0.50% of output span

Electromagnetic Interference (EMI)

Tested per IEC 61326-1 (Edition 1.1). Meets emission levels for Class A equipment (industrial locations) and Class B equipment (domestic locations). Meets immunity requirements for industrial locations (Table A.1 in the IEC specification document). Immunity performance is shown in table 2.

IEC 61010 Compliance Requirements (Valve-Mounted Instruments Only)

Power Source: The loop current must be derived from a separated extra-low voltage (SELV) power source
Environmental Conditions: Installation Category I

Electrical Classification

Hazardous Area:

Explosion proof, Division 2, Dust-Ignition
proof, Intrinsically Safe

Explosion proof, Non-incendive,
Dust-Ignition proof, Intrinsic Safety

Flameproof, Type n, Intrinsic Safety

Flameproof, Type n, Intrinsic Safety

Flameproof, Intrinsic Safety

Flameproof, Intrinsic Safety


Refer to tables 3, 4, 5, 6, 7, and 8 for specific approval information
Electrical Housing: Meets NEMA 4X, CSA Type 4X, IEC 60529 IP66

Other Classifications/Certifications

Japan

Korea Industrial Safety Corp.

Russian GOST-R

Russian - Federal Service of
Technological, Ecological and Nuclear
Inspectorate

Contact your Emerson Process Management sales office for classification/certification specific information

Connections

Supply Pressure: 1/4 NPT internal and integral pad for mounting 67CFR regulator
Output Pressure: 1/4 NPT internal
Tubing: 3/8-inch metal, recommended
Vent (pipe-away): 3/8 NPT internal
Electrical: 1/2 NPT internal conduit connection. optional—M20 internal conduit connection, spring clamp terminal connection(7)

Operating Ambient Temperature Limits(2)

-40 to 80°C (-40 to 176°F) for most approved valve-mounted instruments
-60 to 125°C (-76 to 257°F) for remote-mounted feedback unit.
-52 to 80°C (-62 to 176°F) for valve-mounted instruments utilizing the Extreme Temperature option (fluorosilicone elastomers).

Construction Materials

Housing, module base and terminal box: ASTM B85 A03600 low copper aluminum alloy (standard)
CF8M (cast 316 stainless steel) (optional for valve-mounted instruments only)
Cover: Thermoplastic polyester
Elastomers Standard: Nitrile
Optional: Fluorosilicone

Stem Travel

DVC6010, DVC6015:
0 to 102 mm (4 inches) maximum travel span
0 to 6.35 mm (0.25 inch) minimum travel span
DVC6020, DVC6025: 0 to 606 mm (23.875 inches) maximum travel span

Shaft Rotation (DVC6020, DVC6025, DVC6030 and DVC6035)

0 to 50 degrees minimum
0 to 90 degrees maximum

Mounting

Designed for direct actuator mounting or remote pipestand or wall mounting. Mounting the instrument vertically, with the vent at the bottom of the assembly, or horizontally, with the vent pointing down, is recommended to allow drainage of moisture that may be introduced via the instrument air supply.

Weight

Valve-Mounted Instruments.
Aluminum: 3.5 kg (7.7 lbs)
Stainless steel: 7.7 kg (17 lbs)
Remote-Mounted Instruments.
DVC6005 Base Unit: 4.1 kg (9 lbs)
DVC6015 Feedback Unit: 1.3 kg (2.9 lbs)
DVC6025 Feedback Unit: 1.4 kg (3.1 lbs)
DVC6035 Feedback Unit: 0.9 kg (2.0 lbs)

Options

■Supply and output pressure gauges or ■Tire valves, ■Integral mounted filter regulator,
■Stainless steel housing, module base and terminal box (valve-mounted instruments only), ■Low-Bleed Relay, ■Extreme Temperature

• Improved Control—Two-way digital communications give you current valve conditions. You can rely on this real-time information to make sound process management decisions. By analyzing valve dynamics through AMSTM ValveLink® Software you can identify control areas needing improvement and maintain a high level of system performance.
• Environmental Protection—You can avoid additional field wiring by connecting a leak detector or limit switch to the auxiliary terminals in the DVC6000 Series digital valve controller. In this way, the instrument will issue an alert if limits are exceeded.
• Enhanced Safety—You can check instrument and valve operation and keep the process running smoothly and safely from a remote location. Access is possible at a field junction box, marshalling panel, or within the safety of the control room using either a 375 Field Communicator, a notebook PC, or a system workstation. Your exposure to hazardous environments is minimized and you can avoid having to access hard-to-reach valve locations.
• Hardware Savings—DVC6000 Series digital valve controllers, when used in an integrated system, allow you to realize significant hardware and installation cost savings by replacing other devices in the process loop, such as positioners and limit switches, with a FIELDVUE digital valve controller.
• Built to Survive—Field-tough DVC6000 Series digital valve controllers have fully encapsulated printed wiring boards that resist the effects of vibration, temperature, and corrosive atmospheres. A separate weather-tight field wiring terminal box isolates field-wiring connections from other areas of the instrument.
• Increased Uptime—With the self-diagnostic capability of DVC6000 Series digital valve controllers, you can answer questions about a valve's performance, without pulling the valve from the line. You can run diagnostics (I/P and relay integrity, travel deviation, and on-line friction and deadband analysis and trending) while the valve is in service and operating. You can also compare the present valve/actuator signature (bench set, seat load, friction, etc.) against previously stored signatures to discover performance changes, before they cause process control problems.
• Faster Commissioning—The two-way communication capability allows you to quickly commission loops by remotely identifying each instrument, verifying its calibration, reviewing stored maintenance notes, and more.
• Easy Maintenance—DVC6000 Series digital valve controllers are modular in design. The module base can be removed from the instrument housing without disconnecting the field wiring, pneumatic connections or stem linkages. This module contains the critical sub-modules so component removal is quick and simple.

• Travel Control — Pressure Fallback—Valve position feedback is critical to the operation of a digital valve controller. Without this feedback, the control valve assembly traditionally goes to its fail safe position. DVC6000 Series digital valve controllers can detect position feedback problems caused by a travel sensor failure or linkage failure and continue to operate in "pressure control" mode. If a problem with the valve position feedback is detected, the instrument will automatically disable the travel sensor, send an alert, and control its output pressure much like an I/P transducer. This allows the valve assembly to continue to operate with reduced accuracy until maintenance can be scheduled.

Performance Diagnostics

Performance Diagnostics enables the use of diagnostics while the valve is in service and operating.

• Red/Yellow/Green Condition Indicator (see figure 3)
• I/P and Relay Integrity Diagnostic
• Travel Deviation Diagnostic
• One-Button DiagnosticThe One-Button Diagnostic, (shown in figure 4), is a 20 second sweep which runs the I/P and Relay Integrity, Relay Adjustment Travel Deviation, Supply Pressure, and Air Mass Flow Performance Diagnostic tests. When the sweep is complete, AMS ValveLink Software will show any errors, possible causes, and recommended actions to resolve the error(s).
• On-Line/In-Service Friction and Deadband Analysis (see figure 5)
• Friction and Deadband Trending

While all diagnostics can be run while the valve is inline, only the Performance Diagnostics can be performed while the valve is in service and operating.

Advanced Diagnostics

Advanced Diagnostics include the following dynamic scan tests:

• Valve Signature (see figure 6)
• Dynamic Error Band
• Instrument Drive Signal

These diagnostic scans vary the positioner set point at a controlled rate and plot valve operation to determine valve dynamic performance. The valve signature test allows you to determine the valve/actuator friction, bench set, spring rate, and seat load. The Dynamic Error Band test is a combination of hysteresis and deadband plus "slewing." Hysteresis and deadband are static measurements. However, because the valve is moving, a dynamic error, or "slewing" error is introduced.
Dynamic scan tests give a better indication of how the valve will operate under process conditions which are dynamic, not static.
The Step Response Test checks the valve assemblies response to a changing input signal. and plots travel versus time. The end results of this test allow you to evaluate the dynamic performance of the valve. The Performance Step Test (25 pre-configured points) provides a standardized step test with which to evaluate your valve performance. It utilizes small, medium and large changes.
Advanced Diagnostics are performed with AMS ValveLink Software. The valve must be out of service for Advanced Diagnostics to be performed.

• Non-HART® Systems—Because DVC6000 Series digital valve controllers operate with a traditional 4 to 20 mA control signal, they directly replace older analog instruments. Microprocessor-based electronics provide improved performance along with repeatable and reliable configuration and calibration.
• Modbus with AMSTM ValveLink® Software and HART® Multiplexers—HART communication allows you to extract more value from DVC6000 Series digital valve controllers beyond their inherent improved performance. When integrated into a multiplexer network and using AMS ValveLink Software, the device and valve information is real-time. From the safety of a control room, multiple instruments can be monitored for alerts and alarms. Additionally, tasks such as configuration, calibration and diagnostic testing do not require special trips to the field. AMS ValveLink Software can communicate via Modbus to the distributed control system (DCS) to provide critical information such as valve travel alerts and alarms (figure 7).
• Integrated Control System—A control system with HART communication capabilities has the ability to directly gather information from DVC6000 Series digital valve controllers. Information such as valve travel, alerts and alarms can be seamlessly accessed to provide a view into the field device from the safety of the control room.

HART® Protocol Overview

The HART (Highway Addressable Remote Transducer) protocol gives field devices the capability of communicating instrument and process data digitally. This digital communication occurs over the same two-wire loop that provides the 4 to 20 mA process control signal, without disrupting the process signal (figure 8). In this way, the analog process signal, with its faster response, can be used for control. At the same time, the HART digital communication gives access to calibration, configuration, diagnostic, maintenance, and additional process data. The protocol provides total system integration via a host device.
The HART protocol gives you the capability of multidropping, where you can network several devices to a single communications line. This process is well suited for remote applications such as pipelines, custody transfer sites, and tank farms.

375 Field Communicator

You can perform configuration and calibration at the valve or anywhere on the two-wire loop via a 375 Field Communicator (figure 9). Powerful tools such as the Setup Wizard and Auto Travel Calibration automate the tasks of commissioning DVC6000 Series digital valve controllers. These automation tools not only save time, but also provide accurate and repeatable results.

AMSTM ValveLink® Software

AMS ValveLink Software is a Windows®-based software package that allows easy access to the information available from DVC6000 Series digital valve controllers.
Using AMS ValveLink Software, you can monitor the performance characteristics of the valve and obtain vital information without having to pull the valve from the line. I/P and Relay Integrity and Travel Deviation Diagnostics, as well as On-Line Friction and Deadband Analysis and Trending can be run while the valve is in service and operating. Valve Signature, Dynamic Error Band, and Step Response are displayed in an intuitive user-friendly environment that allows easy interpretation of data.
Diagnostic graphs can be superimposed over those previously stored to view areas of valve degradation. This allows plant personnel to concentrate efforts on equipment that needs repair, avoiding unnecessary maintenance. This diagnostic capability is readily accessible and available to you either in the control room or on the plant floor. In addition to the diagnostic features, AMS ValveLink Software contains an Audit Trail, Batch Runner for automating repetitive tasks, and Trending to view valve performance.
AMS ValveLink Software provides integration into AMS and DeltaVTM systems, with HART and Fieldbus communications.

• The input signal provides electrical power and the set point simultaneously. It is routed into the terminal box through a twisted pair of wires.
• The input signal is then directed to the printed wiring board assembly where the microprocessor runs a digital control algorithm resulting in a drive signal to the I/P converter.
• The I/P converter assembly is connected to supply pressure and converts the drive signal into a pressure output signal.
• The I/P output is sent to the pneumatic relay assembly. The relay is also connected to supply pressure and amplifies the small pneumatic signal from the I/P converter into a single larger pneumatic output signal used by a single-acting actuator. For double-acting actuators, the relay accepts the pneumatic signal from the I/P converter and provides two pneumatic output signals.
• The change in relay output pressure to the actuator causes the valve to move.
• Valve position is sensed through the feedback linkage by the instrument's travel sensor. The travel sensor is electrically connected to the printed wiring board to provide a travel feedback signal used in the control algorithm.

The valve continues to move until the correct position is attained.

Note
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use, or maintenance of any product. Responsibility for the selection, use, and maintenance of any product remains with the purchaser and end-user.