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GE IS200WROBH1ABA | WROB Relay Power Sensing Board--KIMI
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Product Description


GE IS200WROBH1ABA | WROB Relay Power Sensing Board (Mark VIe PDIO)
Fused Power Distribution, Relay Output Protection & Real-Time Power Sensing for Turbine Control Systems
1. Product Overview

The GE IS200WROBH1ABA is a WROB (Relay Power Sensing Board) designed for GE Mark VIe Speedtronic turbine control systems, specifically engineered to support PDIO (Power Distribution I/O) discrete modules in gas turbine and steam turbine control applications. As a critical relay power distribution and protection component, it integrates fused power distribution (12 x 3.15A fuses rated 500VAC/400VDC), real-time power sensing, and relay output protection to ensure reliable operation of turbine relay-based control circuits (fuel valve actuation, safety shutdown, and system interlocks). The board features conformal-coated PCB for environmental protection (moisture, dust, chemical resistance), 2.5kV AC isolation between power channels and control circuits, and compatibility with TDBS, SRLY, and TDBT terminal boards for flexible integration with Mark VIe PDIO modules. It supports 24V DC control power input, simplex/redundant/TMR redundancy modes, and seamless communication with Mark VIe controllers via backplane interface, providing diagnostic feedback for fuse integrity, power supply status, and relay output faults. Equipped with overcurrent/overvoltage protection and self-diagnostic functions, the IS200WROBH1ABA ensures fault-tolerant operation in harsh industrial environments (-20°C to +60°C), ideal for power generation, oil & gas, and industrial turbine applications requiring high-reliability discrete control and circuit protection.


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Key Specifications (IS200WROBH1ABA)
• Manufacturer: General Electric (GE)
• Model: IS200WROBH1ABA
• Product Type: WROB Relay Power Sensing Board for Mark VIe PDIO Modules
• System Compatibility: GE Mark VIe Speedtronic Turbine Control Systems
• Fuse Configuration: 12 x 3.15A Fuses (500VAC / 400VDC Rating)
• Power Input: 24V DC Control Power (Isolated 2.5kV AC)
• Redundancy Modes: Simplex, Redundant, Triple Modular Redundant (TMR)
• Terminal Board Compatibility: TDBS, SRLY, TDBT (Mark VIe PDIO Modules)
• PCB Protection: Conformal Coating (Moisture/Dust/Chemical Resistance)
• Operating Temperature: -20°C to +60°C
• Mounting: Mark VIe PDIO Backplane (Compatible with IS200TRLYH1B Relay Modules)

• Certifications: CE, UL, IEC 61010-1


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2. Core Features
• Fused Power Distribution: 12 x 3.15A high-voltage fuses protect relay outputs from overloads/short circuits, ensuring system safety.
• Real-Time Power Sensing: Monitors power supply status and fuse integrity, providing diagnostic feedback to Mark VIe controllers for proactive maintenance.
• High Isolation Design: 2.5kV AC isolation between power channels and control circuits prevents cross-interference and protects control systems from field-side transients.
• Conformal Coating: PCB with conformal coating enhances reliability in harsh industrial environments (moisture, dust, chemical exposure).
• Flexible Redundancy: Supports simplex, redundant, and TMR configurations for fault-tolerant operation in critical turbine control applications.
• Terminal Board Compatibility: Works with TDBS, SRLY, and TDBT terminal boards for seamless integration with Mark VIe PDIO modules.

• Self-Diagnostic Functions: Detects fuse failures, power supply anomalies, and relay output faults, enabling quick troubleshooting and minimizing downtime.


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3. Typical Applications
• Gas Turbine Control: Relay-based control of fuel valves, inlet guide vanes (IGV), and safety shutdown systems.
• Steam Turbine Control: Power distribution for steam admission valves, governor control, and turbine protection circuits.
• Combined Cycle Power Plants: Redundant relay control for coordinated gas/steam turbine operation.
• Oil & Gas Compression: Fault-tolerant relay circuits for turbine-driven compressor control systems.

• Industrial Turbine Operations: Power sensing and protection for mechanical drive turbine control applications.


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4. Installation & Maintenance
Installation: Mount on Mark VIe PDIO backplane; connect 24V DC control power and terminal boards (TDBS/SRLY/TDBT). Configure redundancy mode (simplex/redundant/TMR) via backplane jumpers; verify fuse ratings (3.15A) and isolation integrity before system startup.
Maintenance: Inspect fuses quarterly for continuity; replace faulty fuses with GE-approved 3.15A/500VAC spares. Clean conformal-coated PCB with dry compressed air to remove dust; monitor diagnostic data via Mark VIe HMI to detect power supply anomalies or fuse failures.

Fault Diagnosis: Retrieve fault codes via Mark VIe controller (fuse failure, power loss, isolation fault). Check fuse continuity with a multimeter; verify power supply voltage (24V DC) and terminal board connections. Inspect isolation barriers if cross-interference is suspected.


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Technical Document | GE IS200WROBH1ABA | WROB Relay Power Sensing Board for Mark VIe PDIO Modules
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