Description

The IS200VSVOH1BEF functions as a high-performance servo control board developed by General Electric as part of the Mark VI Speedtronic turbine control series. This VME board executes position loop control parameters to drive fuel and steam valves through the precise regulation of up to four electro-hydraulic servo valves. Integrated within gas or steam turbine configurations, the IS200VSVOH1BEF directly acquires pulse rate flow inputs, provides LVDT excitation, and processes real-time LVDT position feedback loop values to maintain structural system equilibrium.

The IS200VSVOH1BEF supports both simplex architectures and fault-tolerant Triple Modular Redundant (TMR) control architectures. Built to interface within a standard VME rack installation assembly, this module transmits serialized tracking metrics and positional diagnostics across multi-channel backplane environments. It delivers responsive closed-loop response profiles necessary for demanding automated heavy-duty industrial turbine drive management.

Features

• Multi-Valve Servo Drive Capacity: Directs closed-loop position controls for up to four electro-hydraulic servo valves simultaneously.
• Integrated Feedback Conditioning: Provisions onboard instrumentation processing for high-speed pulse rate flow inputs, LVDT excitation outputs, and active LVDT position feedback tracking.
• Flexible Dual-Architecture Redundancy: Fully compatible with simplex configurations or fault-tolerant Triple Redundant control networks.
• Extensive Component Sub-System Layering: Engineered with over seventy integrated circuits, including inductor beads (L1-L10), multiple resistors, capacitors, and four on-board relays (K1-K4).
• Conformal Insulation Overlay: Protected by a thin, comprehensive conformal coating layer applied over the entire base printed circuit board to shield components from industrial environments.
• Front Panel Visual Diagnostics: Outfitted with a single-slot front metal plate hosting an external cable connector (J5) alongside green (RUN), red (FAIL), and orange (STATUS) LED indicators.

Applications

• Mark VI Speedtronic steam and gas turbine electro-hydraulic servo valve regulation
• Real-time loop positioning for turbine fuel metering and steam extraction valves
• Multi-channel LVDT feedback monitoring and sensor excitation control

Technical Specifications

Installation Guidelines

• VME Rack Alignment: Guide the card smoothly along the chassis mounting tracks until the rear P1 and P2 pins seat securely with the backplane distribution network. Fasten the faceplate completely using the integrated panel screw points.
• Interface Cable Connections: Route the specialized high-density external interface wiring loops directly through the front J5 faceplate cable connector assembly.
• ESD Safe Handling: Maintain standard electrostatic grounding protocols using a validated wrist strap during module installation to protect the seventy internal integrated circuits from voltage breakthroughs.