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The IS200WROBH1AAA is a relay output option board for the Speedtronic Mark VIe gas turbine control system and holds the official technical designation WROB. Within gas turbine control networks of power plants and heavy industries this board functions as a physical-layer interface for the discrete output system to convert digital logic from the control platform into electrical on-off operations for field actuators.
Native support for high-reliability triple-redundancy voting
Hardware-level closed-loop power sensing
Dedicated channel-level fuse isolation protection
The board provides specific signal conversion capabilities to work alongside the primary control system to drive external field devices such as motors and high-voltage solenoids and hydraulic valves. Utilizing its onboard real-time power sensing circuitry the module continuously retrieves supply status feedback from the connected channels and routes contact execution data back to the primary controller to complete a closed-loop monitoring flow from command to status verification.
This module architecturally supports multiple redundancy configurations to operate under simplex or redundant or Triple Modular Redundancy modes depending on the designated system safety level. In simplex mode the system utilizes a single relay channel to execute basic on-off switching. In redundant mode the module provides a backup channel to improve operational stability. Under the primary TMR mode the board works alongside three completely independent parallel relay circuits to perform hardware-level voting control over a single external load such as a turbine emergency trip valve. When one relay channel experiences a signal discrepancy or contact failure the remaining two healthy paths maintain the required control state to complete fault tolerance without interrupting gas turbine operation.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
General Electric IS200WROBH1AAA POWER SENSING BOARD Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Natural Gas Power Generation
Used in the primary control cabinets of heavy-duty gas turbines to execute relay switching control for gas inlet and emergency trip valves to secure generating units under TMR mode.
Coal-Fired & Thermal Power Generation
Used for high-pressure oil governing system control in massive steam turbines to deliver channel-level overload protection via 12 onboard 3.15A fuses for solenoids driving hydraulic actuators.
Nuclear Power Generation
Used in auxiliary control systems for conventional island steam turbine generator units in nuclear power plants leveraging real-time power sensing circuitry to report relay contact action states.
Iron & Steel blast Furnaces
Used for speed and safety interlock control in Blast Furnace Top Gas Recovery Turbine units utilizing high vibration resistance to distribute discrete power under strong mechanical vibration environments.
Hydroelectric Power & Pumped Storage
Used in hydraulic control networks for hydroelectric turbine inlet valves to ensure absolute execution of water dispatch commands during critical flood seasons via circuit on-off and logic control.
Seawater Desalination Engineering
Used in control enclosures of energy recovery turbines driving high-pressure reverse osmosis pumps to transmit channel fault data to upper-level DCS networks via multi-protocol integration under corrosive mist environments.
When using the IS200WROBH1AAA, ensure the configuration mode among simplex or redundant or TMR strictly matches between the ToolboxST software and hardware wiring. Before replacing any of the 12 onboard 3.15A fuses, you must disconnect the external high-voltage load supply of that channel and always use an explosion-proof fuse of the same specification.
Because it controls critical loops like gas turbines, never disconnect or remove more than one interconnected option board simultaneously during online hot-swapping in TMR mode.
Additionally, regularly verify channel signal discrepancy status via configuration tags and keep the board surface clean to prevent overheating or contact failures caused by high-thermal dust buildup.
The GE IS200WROBH1AAA is a relay output board for Mark VIe gas turbine control systems supporting simplex and redundant and TMR modes. Featuring 12 onboard 3.15A fuses, it provides real-time power sensing alongside overvoltage and short circuit and overheating diagnostics while supporting Ethernet and Profibus communications to guarantee continuous turbine control operation in harsh environments.
The IS200WROBH1AAA is a relay output option board known as the WROB board for the GE Mark VIe gas turbine control system.
What is the main function of the IS200WROBH1AAA?
It acts as an extension component responsible for high-voltage discrete contact output control and provides real-time fuse break detection and isolation protection for each channel.
How to use products like the IS200WROBH1AAA?
It must be installed alongside a primary relay board like the SRLY module inside the Mark VIe control cabinet and connected to field actuators via dedicated cables and terminal blocks.
What redundancy configurations does the IS200WROBH1AAA support?
It supports simplex and redundant as well as Triple Modular Redundancy (TMR) configurations to meet different safety level requirements of gas turbine control.
What is the Triple Modular Redundancy (TMR) mode of the
In TMR mode the system utilizes three parallel relay channels for voting control so the system continues normal operation without interrupting the gas turbine even if one module hardware failure occurs.
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