* Compact in size.
* Local user interface (pushbuttons and multilingual liquid crystal display).
* Optional integrated position switch and position transmitter.
* Linkage-less, non-contact position feedback.
* Valve diagnostics.
* In-service performance diagnostics tests.
* Autotuner.
* Integration via HART.
Customer needs were taken directly to the drawing board when engineers at Emerson Process Management developed the DVC2000 digital valve controller. It incorporates the powerful diagnostic capabilities of FIELDVUE instruments in an easy-to-use package with automatic calibration and tuning capabilities. Pushbutton configuration and a multilanguage local interface make the DVC2000 instrument simple to apply, operate and maintain. At the same time it provides unrivalled benefits to control valve users.
Simple to apply
The DVC2000 instrument has been designed in accordance with global standards. It is compact and can be mounted to any actuator with NAMUR mounting capabilities, IEC60534-6-1 and IEC 60534-6-2. Its high performance, linkage-less travel feedback system means a reduction in the number of mounting parts and mounting complexity.
The DVC2000 instrument can be used as a direct replacement for older analog instruments, or it can be used within a digital environment, communicating via HART protocol. Digital communication allows a user to extract more value from the DVC2000 instrument. Critical information such as alerts, alarms and diagnostic data can be easily integrated with the control system to provide a view into the field device from the safety of the control room.
Designed to meet your needs, the DVC2000 instrument is available with an integrally mounted position transmitter and two integral limit switches. The transmitter provides a 4-20 mA signal for position verification, and the switches can be configured to indicate open and closed positions at any point within the calibrated travel.
The DVC2000 instrument includes diagnostic capabilities that can be used to monitor control valve condition in order to predict failure. Diagnostic tests can be performed on-line, with no interruption to the process, or off-line when the process is shut down or the valve bypassed. If used on a HART network, the tests can be performed remotely and scheduled to run automatically.
Simple to operate
The DVC2000 instrument has a local user interface that includes a liquid crystal display and four pushbuttons. The display is protected from the environment by a NEMA 4X/IP66 enclosure and supports multiple languages, including German, French, Italian, Spanish, Chinese, Japanese and English.
The local interface can be used to initiate a quick setup routine that calibrates and tunes the instrument for the actuator on which it has been installed. This helps provide accurate and consistent performance.
The DVC2000 instrument is a core component of Emerson's PlantWeb digital plant architecture. PlantWeb integrates intelligent field devices and modular software such as AMS Suite: Intelligent Device Manager or the DeltaV digital automation system. All are linked by the information rich HART communication protocol.
The DVC2000 instrument powers PlantWeb by capturing and delivering critical operating information about the valve and the process, enabling plant personnel to make better-informed decisions leading to increased availability, reduced variability, process optimisation, increased throughput and enhanced product quality.
Simple to maintain
The DVC2000 instrument is simple to maintain due to its self-diagnostic capabilities. Also, the information that it provides, via PlantWeb digital plant architecture, can be used to simplify the maintenance of the control valve on which it is installed.
When used in conjunction with AMS ValveLink software, the information provided by the DVC2000 instrument can be used to diagnose faults such as increased friction, incorrect seating or sealing forces, non-linearities, pneumatic faults or dynamic errors. This information can be trended to enable failures to be predicted and action taken prior to an unplanned shutdown.
The DVC2000 instrument features linkage-less position feedback. There are no touching parts between the instrument and valve stem, simplifying controller installation and maximising cycle life. Should maintenance be required the instrument can be removed from the valve easily, leaving the position feedback mechanism mounted on the valve.
For more information contact Luculle Stols, Alpret Control Specialists, +27 (0)11 249 6700, [email protected]
| Tel: | +27 11 249 6700 |
| Email: | [email protected] |
| www: | www.acs-autocon.com |
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