WOODWARD 8200-188

الوصف

The WOODWARD 8200-188 is a Digital Valve Positioner (DVP). This advanced electronic device is a cornerstone of modern industrial turbine control systems, providing highly precise and dynamic control over the position of various valves and actuators.

WOODWARD 8200-188: Digital Valve Positioner (DVP)

The WOODWARD 8200-188 DVP acts as an intelligent interface, translating command signals from a turbine’s main control system into exact physical movements of the connected fuel, steam, or other critical flow control components. This ensures optimal turbine performance, efficiency, and safety.

Product Overview

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

• Product Type: Digital Valve Positioner (DVP) / Electric Actuator Driver
• Manufacturer: Woodward
• Part Number: 8200-188
• Key Specifications:
  • Input Power: 125 VDC. This is a notable feature, making it suitable for systems where 125 VDC is the standard power supply for control components.
  • Output Power: Capable of 5 kW output, indicating it can drive relatively powerful electric actuators and valves.
  • Ingress Protection (IP) Rating: IP30. This means it’s protected against solid objects larger than 2.5 mm, but it has no protection against water. Therefore, it’s designed for installation inside a control cabinet or a well-protected enclosure.
  • Input/Output Connections: Features Terminal Block (TB) Input/Output and also supports Ethernet communication. This offers versatile connectivity for both traditional analog/digital signals and modern network integration.
  • Motor Types: Compatible with Woodward’s Limited Angle Torque (LAT) and Brushless DC (BLDC) motor types, which are commonly found in their high-performance valves and actuators.
  • Position Feedback: Utilizes resolver feedback for highly accurate valve position monitoring.
  • Listings: Non-SIL (Safety Integrity Level) certified for safety applications, meaning it’s not typically used as the sole safety instrumented function but rather as a highly reliable control element.
• Function: The 8200-188 DVP receives a demand signal (e.g., from a Woodward MicroNet or 505 controller via analog input or Ethernet). It then processes this signal, along with high-resolution position feedback from the valve or actuator, to precisely drive the valve to the commanded position. Its internal controller uses advanced algorithms (like PID and adaptive OptiTune) to provide fast, accurate, and stable valve control, which is essential for stable turbine operation during various conditions, including startup, load changes, and shutdown.

Detailed Product Description

The Woodward 8200-188 Digital Valve Positioner is a state-of-the-art driver for Woodward’s electric actuation systems. Its design prioritizes accuracy, responsiveness, and reliability for critical turbine control applications.

• High-Speed, Precise Control: The DVP leverages advanced control algorithms and high-speed processing to accurately and rapidly position valves and actuators. This dynamic response is crucial for maintaining turbine stability and performance, especially during rapid changes in operating conditions.
• Integrated Control Architecture: It incorporates Woodward’s latest control architecture, providing robust and efficient control for their various electric motor-driven valves and actuators.
• Resolver Feedback for Enhanced Accuracy: By using resolver feedback from the connected valve or actuator, the DVP establishes a highly accurate closed-loop control system, ensuring precise positioning, high repeatability, and minimal overshoot.
• ID Module Compatibility for Plug-and-Play: Many newer Woodward valves and actuators are equipped with an “ID module.” When connected to the 8200-188 DVP, it can automatically read critical, valve-specific configuration information, enabling “plug-and-play” installation and simplifying setup and commissioning significantly.
• Versatile Communication and Power Options: The ability to operate on 125 VDC makes it suitable for integration into existing industrial control systems that use this common power standard. The combination of Terminal Block (TB) I/O and Ethernet (EGD) provides flexible connectivity, allowing for both traditional hardwired signals and modern network integration with plant Distributed Control Systems (DCS), remote monitoring systems, and advanced diagnostic tools.
• Rugged Construction and Diagnostics: Built to withstand harsh industrial environments (within its IP30 rating), the DVP also includes comprehensive diagnostics. These diagnostics help plant personnel identify and troubleshoot valve and actuator issues, providing early indications of performance problems at the DCS operator terminal, which can improve predictive maintenance capabilities.

Technical Specifications (for the 8200-188 DVP)

Typical Applications

The WOODWARD 8200-188 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, particularly in facilities that operate on a 125 VDC control power standard.
• Other Industrial Process Control: Any industrial application requiring high-accuracy, dynamic positioning of valves or motors based on electronic demand signals, where a 125 VDC power supply and advanced communication capabilities are required.