Product Overview
Emerson Fisher DVC6200 digital valve controller is a communication-based microprocessor instrument that combines traditional positioner functions with digital technology, replacing standard pneumatic and electro-pneumatic valve positioners. Its core advantage lies in providing convenient access to critical process operation information through HART communication protocol, including process component and control valve status data, supporting connections via handheld communicators, computers, or operator consoles. The product features automatic calibration, custom characterization curves, and advanced diagnostics, suitable for process control requirements in petroleum, chemical, power, and other industrial sectors. It is certified by CSA, FM, ATEX, IECEx, and other international standards, ensuring reliable operation in hazardous areas and harsh conditions.
Core Technical Parameters
| Parameter Category | Detailed Specifications |
|---|
| Input Signal Characteristics | Point-to-point mode: 4-20mA DC (nominal), split-rangeable; Minimum control current 4.0mA, minimum current without microprocessor restart 3.5mA; Minimum available voltage at instrument terminals 9.5VDC (analog control)/10VDC (HART communication) |
| Supply Requirements | Medium: Clean, dry, non-corrosive air or natural gas; Complies with ISA 7.0.01 and ISO 8573-1 standards (particle size class 7, oil content class 3, dew point class 3 or 10°C below minimum ambient temperature) |
| Air Consumption | Standard relay: <0.38 normal m³/hr (14scfh) at 1.4bar (20psig), <1.3 normal m³/hr (49scfh) at 5.5bar (80psig); Low bleed relay: Average 0.056 normal m³/hr (2.1scfh) at 1.4bar, average 0.184 normal m³/hr (6.9scfh) at 5.5bar |
| Maximum Output Capacity | 10.0 normal m³/hr (375scfh) at 1.4bar (20psig); 29.5 normal m³/hr (1100scfh) at 5.5bar (80psig) |
| Electrical Protection | Reverse polarity protection, overcurrent protection; Hazardous area certifications include intrinsically safe, explosion-proof, dust ignition-proof, etc. |
1. Weight Specifications
| Product Model | Construction Material | Weight (kg) | Weight (lbs) |
|---|
| DVC6200 | Aluminum construction | 3.5 | 7.7 |
| DVC6200 | Stainless steel body | 8.6 | 19 |
| DVC6205 | Standard configuration | 4.1 | 9 |
| DVC6215 | Feedback unit | 1.4 | 3.1 |
2. Component Material Details
| Component | Material Specification | Notes |
|---|
| Housing, module base, terminal box | Standard: A03600 low-copper aluminum alloy; Optional: Stainless steel | Meets explosion-proof and corrosion resistance requirements |
| Cover | Thermoplastic polyester | - |
| Elastomers | Standard: Nitrile; Extreme temperature option: Fluorosilicone | Suitable for different temperature conditions |
| Main components | Stainless steel | Ensures structural strength and corrosion resistance |
| Seals | O-rings (Nitrile/Fluorosilicone) | Select material according to operating conditions |
| Printed Wiring Board (PWB) assemblies | Industrial-grade electronic components | EMI resistant |
| Pneumatic relay | Stainless steel and engineering plastics | Compatible with supply medium characteristics |
3. Spare Parts Specifications and Models
Complete Spare Parts Kits
| Spare Parts Kit Name | Specification | Part Number | Included Components |
|---|
| Elastomer spare kit | Standard (Nitrile) | 19B5402X012 | Elastomeric parts for one digital valve controller |
| Elastomer spare kit | Extreme temperature (Fluorosilicone) | 19B5402X022 | Elastomeric parts for extreme temperature conditions |
| Small hardware spare kit | Universal | 19B5403X032 | Small hardware for one digital valve controller |
| Screen seal kit | Universal | 14B5072X182 | 25 screen seals (item 231), 25 O-rings (item 39) |
| Integral mount seal kit | For 667 size 30i-76i and GX actuators | 19B5402X032 | 5 seals (item 288) |
Common Spare Parts Details
| Spare Part Name | Application | Part Number (Example) | Material/Specification |
|---|
| I/P converter kit | Standard conditions | GG20240X012 | Includes I/P converter and matching seals |
| I/P converter kit | Extreme temperature | GG20240X022 | Fluorosilicone elastomers |
| PWB assembly | HW2 version, without travel feedback (HC level) | - | Industrial-grade electronic assembly |
| PWB assembly | HW2 version, with travel feedback (ODV level) | - | Supports partial stroke test function |
| Pneumatic relay assembly | Double-acting (Type A) | 38B5786X052 | Stainless steel body + engineering plastic seals |
| Pneumatic relay assembly | Single-acting direct (Type C) | 38B5786X132 | Low bleed design |
| Pneumatic relay assembly | Single-acting reverse (Type B) | 38B5786X092 | Factory pre-calibrated, no field adjustment required |
| Terminal box kit | Aluminum, standard, without travel feedback | 19B5401X142 | IP66 protection rating |
| Terminal box kit | Stainless steel, extreme temp, with travel feedback | 19B5401X202 | For hazardous areas and low temperature conditions |
| Pressure gauge | Double-acting, PSI/bar range (0-160PSI/11bar) | 47 | Vibration-resistant design, accuracy class 1.5 |
| Seals/O-rings | Standard conditions | 39/237 | Nitrile |
| Seals/O-rings | Extreme temperature | - | Fluorosilicone |
Product Functions and Features
Control and Configuration Functions
- Multiple control modes: Supports analog control, digital control, and test modes; restart control mode options include "continue last value", "analog", or "digital" to meet different control scenario requirements.
- Flexible input characteristics: Provides linear, equal percentage, and quick opening fixed input characteristics; supports custom 21-point characterization curves; control precision can be optimized by adjusting characteristic parameters.
- Travel/Pressure control switching: Supports travel control and pressure control modes; can automatically switch to pressure control when travel sensor failure is detected, ensuring system continuity.
- Small signal cutoff and limits: Configurable upper and lower cutoff points with soft cutoff speed to prevent valve impact and protect seat and actuator.
Calibration and Diagnostic Functions
- Automatic calibration: Supports standard auto calibration, zero-based calibration, and advanced setup calibration; can automatically establish travel limits for precise calibration of large actuators.
- One-button calibration: Press the CAL button on the terminal box for 3-10 seconds to initiate auto calibration; valve moves through full travel; operable in commissioned/non-commissioned states (except write-protected state).
- Sensor calibration: Includes pressure sensor (supply + dual output) and analog input sensor calibration functions to ensure measurement data accuracy.
- Advanced diagnostics: Monitors travel deviation, pressure deviation, drive signal anomalies and other faults; stores 20 alarm records; supports reading alarm status via HART command 48 for preventive maintenance.
- Partial Stroke Test (PST): ODV level only; can be initiated via local button, handheld communicator, or ValveLink software; test travel adjustable from 1%-30% without affecting normal process operation.
Installation and Compatibility Features
- Multiple mounting options: Supports integral mounting to Fisher 657/667/GX actuators, rotary actuators, remote mounting (2-inch pipe stand/wall mount); compatible with IEC 60534-6-1, NAMUR, and other international mounting standards.
- Wide actuator compatibility: Compatible with linear actuators (travel 6.35mm-606mm) and rotary actuators (45°-180°); supports spring diaphragm, piston, and other actuator types.
- Cable length adaptation: HART communication cable length depends on capacitance characteristics; maximum allowable length can be calculated using formula; supports signal transmission for remote mounting scenarios.
Operation and Maintenance
Wiring Requirements
- Control system must provide instrument available voltage ≥10VDC; calculate actual available voltage based on cable type, length, and whether HART filter or safety barrier is used.
- Auxiliary terminal wiring capacitance must not exceed 100,000pF; gold-plated or hermetically sealed contact switches recommended to prevent contact corrosion affecting signal transmission.
- Cable shield should be grounded only at the control system end to avoid electromagnetic interference; compliant cables listed in Table 2-1 recommended (such as BELDEN 9501, BS5308 series).
Maintenance Procedures
- Routine maintenance: Regularly check vent port for blockage; clean housing (do not use flammable solvents) to maintain protection rating; increase inspection frequency for dusty environments.
- Component replacement: Main module, I/P converter, PWB, pneumatic relay, and other key components can be field-replaced; corresponding calibration required after replacement (e.g., travel calibration after I/P converter replacement).
- Troubleshooting: Read alarm records via ValveLink software or handheld communicator; refer to troubleshooting table based on symptoms (such as communication failure, calibration anomaly, unstable output); common faults include insufficient available voltage, cable capacitance exceeding limits, improper relay adjustment, etc.
Applications and Certifications
Applicable Industries
Petrochemical, power generation, water treatment, food and beverage, pharmaceutical, metallurgy, and other industrial process control fields, especially suitable for critical process loops requiring precise valve position control, remote diagnostics, and preventive maintenance.
Certifications
- Hazardous area certifications: CSA (intrinsically safe, explosion-proof, Zone 2), FM (intrinsically safe, dust ignition-proof), ATEX (intrinsically safe, Type n), IECEx (intrinsically safe, dust intrinsically safe).
- Marine certifications: ABS, BV, DNV, Lloyd's Register.
- Other certifications: CCC (China), CML (Japan), CUTR (Russia/Belarus/Kazakhstan), ESMA (UAE), INMETRO (Brazil), KOSHA/KTL (Korea), NEPSI (China), PESO CCOE (India), SANS (South Africa).
- Quick Start Guide: D103556X0CN (Installation, wiring, and initial configuration)
- Technical Data Sheet: D103415X0CN (Product specifications and selection)
- Dimensional Manual: D103543X012 (Installation and connection dimensions)
- Software Support: ValveLink software (configuration, calibration, diagnostics), AMS Trex handheld communicator (field operations)
