Digital Valve Control Home About Us Our Solutions Contact Us Digital reliability for valve & actuator controls Total engineered valve and control solution The Digital Valve Controller is designed to provide a state of the art valve controller with features to improve reliability and modernize current systems. The Digital Valve control System provides: Automatic Back-up Control Automated "Bumpless" Transfer Data on Valve Capacity / Port Opening Advanced Monitoring & Data Logging Event Logging Response time tests Partial stroke tests Thrust control Variable Configuration Health Monitoring A comprehensive solution for all valve management needs. The TapcoEnpro DVC is compatible with: Single/Double Disc Slide Valves Plug Valves Digital Valve Controller Features Redundant Controllers and Power Supplies with Automatic Switchover Each DVC supports an optional Backup controller. If the Primary controller can no longer position the valve, the Backup controller will automatically take over and restore operation. User friendly "Windows like" Operator Interface A 5.5 inch color, quarter VGA display provides a friendly "Windows like" Graphical User Interface (GUI). The GUI interface is controlled via three pushbuttons and an optical shaft encoder (multi-function wheel) located on the front of the DVC. All embedded features of the DVC can be accessed and controlled via the front panel without the need for handheld devices, opening the controller enclosure, or connecting to a laptop computer. Friendly user interface using... Pushbuttons List boxes Custom indicators and controls Important information is always visible, e.g.: Valve position, valve port open area, fault indicator Ethernet, 4-20mA and Modbus Communications The DVC supports Ethernet, 4-20mA and Modbus communications. Remote monitoring and troubleshooting of the DVC are available via an Ethernet communications link to a laptop or the control room. This feature works with a point-to-point connection, over a LAN or through the Internet. Self-Diagnostics Extensive hardware and software tests ensure proper operation and aid the operator in installing, positioning and troubleshooting the system. Response Time Test Using the DVC menu screen, an operator can select a Valve Time Response test in which the valve is dynamically stepped -5%, then +10% and then -5% back to its original position. As a result, a time response curve is generated which displays time vs. position and thrust valve vs. time during the test. Deviations from normal may reveal a defective valve or help predict future failures. Software Based Setup Using the DVC front panel GUI or NetDVC™ Windows application program the operator can configure the DVC to suit a wide range of systems. For example, optional sensors can be individually enabled or disabled which allows the DVC to replace obsolete controllers with minimal changes to the system. As sensors are added they can be enabled without modifying the DVC hardware or software. All setup information is stored in flash memory within the DVC. Setup information can be transferred to a laptop for analysis, modification and storage. Stored setup files can be transferred to a DVC as part of initial setup, troubleshooting or recovery. Software Based Calibration Using the front panel GUI or NetDVC™ application program, the operator may calibrate all of the DVC's sensors and outputs. All calibration information is stored in flash memory within the DVC. Easily calibrate all analog inputs and outputs Calibrate without opening the controller enclosure Uses simple two point linear calibration No hardware adjustments required (No potentiometers) Programmable analog ranges, valve control parameters, limits and set points Enclosures Hazardous locations, weather tight and purged enclosures available. Event Logging/Fault Stacking The DVC typically stores an entire year's worth of events, including alarms, faults and operator actions in flash memory within the DVC. The time of occurrence and a description of the events are provided. Events can be viewed using the DVC front panel GUI or the NetDVC™ application program. Stores up to 1 year's events with date and time stamp System Events Power up Backup enabled Operator Events Local control Change setup Set clock Fault Events / Fault Stack Alarms Failures Lists faults with date and time stamp Faults can be cleared System Health Monitoring A "Fault Stack" is provided for capturing failures. Failures are stored in the "Fault Stack" in the order that they occurred. After reviewing the failures the operator can clear the "Fault Stack". An indicator located on the front panel GUI changes from green to red to alert the operator of failures on the "Fault Stack". Automated "Bumpless Transfer" The DVC provides Automated "Bumpless Transfer" when transferring control from a remote source to local DVC control. Additionally, the DVC provides a bumpless transfer when transferring control from the local DVC to a remote source by ensuring the control signals are the same before allowing the transfer. Calculates Valve Capacity and Port Opening Valve capacity and port opening are calculated using a 10 point piece-wise linear equation. When positioning the valve the operator provides the valve port opening at 10 predefined points of travel. This information is stored in flash memory. Calculates Opening and Closing Thrust Values Opening and closing thrust values are calculated and compared to limits to ensure safe operation. When positioning the valve the operator provides the valve cylinder parameters and operating limits. This information is stored in flash memory. A Thrust Limiting algorithm is included for Plug Valves to ensure that safe thrust levels are maintained during thermal expansion. Supports Both English and Metric Units The DVC GUI can be set to display values in English or Metric units. Net DVC Remote Monitoring, Control and Troubleshooting The NetDVC™ Windows based application program provides full access to all DVC capabilities. This feature works with a point-to-point connection, over a LAN or through the Internet. Using NetDVC™, a remote operator can view what is being displayed on the DVC front panel display and control the DVC via a virtual front panel. The virtual front panel provides the same operator interface as the DVC front panel. Utilizing the larger display, keyboard and mouse of a remote computer, NetDVC™ provides user friendly screens for monitoring, controlling and configuring the DVC. For troubleshooting, NetDVC™ provides unlimited data logging of all DVC parameters, remote control of all inputs and outputs and automatic time response tests. Click here to request information or phone (in North America) toll free: 866.379.4054, Fax: 281.247.8281   Solutions Overview   Actuators/Valves   Actuators & Controls   Custom Actuators   Bolt-Less Slide Valves™   Butterfly Valves   Digital Valve Controller   Diverter Valves   Flapper Valves   Plug Valves   Slide Valves   Vessels/Chambers   Fabrication/Installation   Field Services     Contact Us | Privacy Policy | Other CWFC Solutions © 2007 Curtiss-Wright Corporation, All Rights Reserved