The GE IS200WROBH1A, including the IS200WROBH1ABA revision, is a specialized relay output and power sensory board designed for the Mark VIe control system, providing high-reliability switching and status feedback for industrial turbine applications.
Core Features
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Integrated relay outputs for controlling heavy-duty field devices.
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Real-time power sensing and diagnostic feedback to the controller.
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Robust electrical isolation to protect sensitive control logic.
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Onboard status LEDs for rapid visual troubleshooting of relay states.
Technical Parameters
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Input Voltage: 28 VDC nominal (System Power).
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Relay Type: Electromechanical high-capacity relays.
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Contact Rating: 125 VDC / 250 VAC (Load dependent).
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Isolation: 1500 Vrms between field and logic circuits.
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Power Dissipation: Optimized for low-heat operation in cabinets.
Specifications
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Model ID: GE IS200WROBH1A / IS200WROBH1ABA.
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Series: Mark VIe Speedtronic Control.
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Revision: H1ABA (Conformal coated for environmental protection).
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Mounting: Vertical plug-in PCB for Mark VIe frames.
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Connector: Multi-pin high-density backplane interface.
Application Areas
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Gas and Steam Turbine auxiliary control.
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Critical emergency shutdown (ESD) interfaces.
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Industrial motor starter synchronization.
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Power plant generator protection systems.
Q&A
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Q: What is the primary function of the “WROB” board series?
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A: It acts as the physical interface that translates low-level processor commands into high-power relay closures for field equipment.
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Q: Is the H1A version compatible with the H1ABA version?
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A: Yes, the H1ABA is a functional equivalent that typically features improved conformal coating for better resistance to moisture and contaminants.
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Q: Can this board be used for high-speed pulse applications?
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A: No, because it uses mechanical relays, it is intended for standard switching logic rather than high-frequency pulse-width modulation (PWM).
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