WOODWARD 8200-186

الوصف

The WOODWARD 8200-186 is a Digital Valve Positioner (DVP). This electronic device is a crucial part of modern industrial turbine control systems, providing precise and dynamic control over the position of various valves and actuators.

WOODWARD 8200-186: Digital Valve Positioner (DVP)

The WOODWARD 8200-186 DVP acts as an intelligent intermediary between a turbine’s main control system and the mechanical components that regulate fuel, steam, or other critical flows. It translates electrical command signals into exact movements, ensuring optimal performance, efficiency, and safety of the turbine.

Product Overview

This specific part number represents a configuration within Woodward’s robust DVP series, designed for demanding industrial environments.

• Product Type: Digital Valve Positioner (DVP) / Electric Actuator Driver
• Manufacturer: Woodward
• Part Number: 8200-186
• Key Specifications (based on Woodward’s documentation and typical DVP configurations):
  • Input Power: 125 VDC. This distinguishes it from many other DVP models that commonly use 24 VDC.
  • Ingress Protection (IP) Rating: IP30, indicating protection against solid objects larger than 2.5 mm but no protection against water. This suggests it’s designed for installation inside a control cabinet or a well-protected enclosure.
  • Input/Output Connections: Features Terminal Block (TB) Input/Output, meaning all electrical connections for control signals, power, and feedback are made via screw terminals.
  • Communication: While the 8200-186 is primarily known for its terminal block I/O, other DVP variants support various communication protocols, including Ethernet (EGD), CANopen, and analog inputs. For the 8200-186, analog input is likely the primary control signal interface, but it’s important to consult the specific datasheet for any advanced communication options.
• Function: The 8200-186 DVP receives a demand signal from a turbine controller (like a Woodward MicroNet or 505 controller). It then uses this signal, along with high-resolution position feedback from the valve or actuator (typically via a resolver), to precisely drive the valve to the commanded position. It contains a robust internal controller that employs advanced algorithms (e.g., PID, OptiTune adaptive PID) to ensure high-speed, precise, and stable valve control, critical for maintaining turbine stability and performance during all operating conditions.

Detailed Product Description

The Woodward 8200-186 Digital Valve Positioner is a state-of-the-art driver for Woodward’s electric actuation systems. Its design prioritizes accuracy, responsiveness, and reliability, making it suitable for modern turbine control applications.

• High-Speed, Precise Control: The DVP utilizes advanced control algorithms and high-speed processing to accurately and rapidly position valves and actuators. This dynamic response is crucial for stable turbine operation, especially during transients like load changes, startup, and shutdown.
• Integrated Control Architecture: It leverages Woodward’s latest control architecture, offering robust control for various motor types, including Limited Angle Torque (LAT) and Brushless DC (BLDC) motors found in Woodward’s high-performance valves and actuators.
• Resolver Feedback for Accuracy: The DVP relies on resolver feedback from the valve or actuator to determine its exact position, creating a highly accurate closed-loop control system that ensures high repeatability and minimal overshoot.
• ID Module Compatibility: Many newer Woodward valves and actuators come with an integrated “ID module.” When connected to such a device, the 8200-186 DVP can automatically read critical valve-specific configuration information, enabling a “plug-and-play” installation and simplifying setup and commissioning.
• 125 VDC Power Input: This particular model is designed to operate on a 125 VDC power supply, which is common in many industrial control systems and legacy installations.
• Terminal Block Connections: The use of terminal blocks for all inputs and outputs provides a secure and flexible wiring interface, allowing for easy integration into existing control panels.
• Rugged Design: Despite its sophisticated electronics, the DVP is built to be rugged and compact, suitable for the demanding conditions of industrial environments, provided it’s installed within an appropriate enclosure to meet its IP30 rating.

Technical Specifications (for the 8200-186 DVP)

Typical Applications

The WOODWARD 8200-186 Digital Valve Positioner is a core component in:

• Gas Turbine Fuel Control Systems: Precisely positioning gas fuel metering valves to control combustion processes.
• Steam Turbine Valve Actuation: Driving steam admission, extraction, or bypass valves for speed, load, and pressure control in plants utilizing 125 VDC power systems.
• Other Industrial Process Control: Any application requiring high-accuracy, dynamic positioning of valves or motors based on electronic demand signals, particularly where a 125 VDC supply is standard.