Fisher® FIELDVUE™ DVC6200p digital valve controllers are PROFIBUS PA communicating instruments with linkage-less, non-contact travel feedback. In addition to the traditional function of converting a digital signal to a pneumatic output pressure, the DVC6200p digital valve controller, using PROFIBUS PA communications protocol, gives easy access to information critical to process operation as well as process control.
Using a compatible PROFIBUS PA configuration tool, you can obtain information about the health of the instrument, the actuator, and the valve. You can also obtain asset information about the actuator or valve manufacturer, model, and serial number. You can set input and output configuration parameters and calibrate the instrument.
Using the PROFIBUS PA protocol, information from the instrument can be integrated into control systems.
Features & Benefits
Linkage-Less Non-Contact Position Feedback- The high performance, linkage-less feedback system eliminates physical contact between the valve stem and the DVC6200p. There are no wearing parts so cycle life is maximized.
Built to Survive- The field proven DVC6200p instrument has fully encapsulated electronics that resist the effects of vibration, temperature, and corrosive atmospheres. A weather-tight wiring terminal box isolates field wiring connections from other areas of the instrument.
Accurate and Responsive- The two-stage positioner design provides quick response to large step changes and precise control for small setpoint changes.
Travel Control/Pressure Fallback- Valve position feedback is critical to the operation of the digital valve controller. The DVC6200p can detect position feedback problems and automatically revert to I/P transducer mode to keep the valve operational.
Ease of Use
Enhanced Safety- The DVC6200p is a PROFIBUS PA communicating device, so information can be accessed anywhere along the lopp. This flexibility can reduce exposure to hazardous environments and make it easier to evaluate valves in hard to reach locations.
Fast Commissioning- PROFIBUS communication allows you to quickly commission loops remotely using the PROFIBUS configuartion tool with the DVC6200p Electronic Device Description (EDD). The DVC6200p can also be locally calibrated/commissioned by shorting the auxiliary terminal located in the terminal box.
Easy Maintenance- The DVC6200p digital valve controller is modular in design. Critical working components can be replaced without removing field wiring or pneumatic tubing.
Stroke Valve- The Stroke Valve Test is used to confirm proper valve operation. It helps to validate the auto-calibration after guided setup is complete.
Hardware and Installation Savings- Significant savings can be achieved in reduced wiring, installation, and hardware requirements compared to traditional integrated control systems. By utilizing function blocks such as Discrete Input and Analog Input blocks, the need for limit switches and position transmitters can be eliminated, providing additional savings in hardware and installation costs.
Improved Maintenance Decisions- Digital communication provides easy access to the condition of the valve. Sound process and asset management decisions can be made by analysis of valve information through device alerts that provide details of the operational state of the final control element.