The IS200TDBTH6AAA is a T Discrete Terminal Board engineered by General Electric (GE) as part of the Mark VIe turbine control platform. Specifically built for Triple Modular Redundant (TMR) applications, this board facilitates accurate processing and safe termination of discrete input signals from field devices such as limit switches, push buttons, and relays in critical control systems.

Designed for use in gas and steam turbine systems, the TDBTH6AAA board supports 48 discrete inputs, divided across three isolated sections for use in TMR configurations. Each section operates independently to ensure redundancy, fault tolerance, and high system availability—an essential requirement for mission-critical applications where uninterrupted performance is paramount.

The IS200TDBTH6AAA receives signals from dry contacts or externally powered contact inputs. It includes internal filtering and optical isolation that protects the system from voltage transients and ground loops. These features ensure that noise or disturbances in field wiring do not affect control logic integrity. The board interfaces directly with corresponding discrete input I/O packs such as the IS220PDIAH1A or IS220PPDAH1A, enabling it to transmit clean, digitized signals to the Mark VIe controller.

With a rugged design and long lifecycle, the board is built to withstand harsh industrial conditions including high temperatures, vibration, and electrical noise. It comes with standard terminal blocks that allow secure wiring, fast installation, and easy maintenance. The clear labeling and modular design of the TDBTH6AAA contribute to reduced downtime during troubleshooting or component replacement.

The IS200TDBTH6AAA also supports diagnostic features that detect open circuits, short circuits, and signal loss. This ensures fast fault detection and improves system reliability. Its compatibility with GE’s Mark VIe control architecture makes it ideal for system expansions, retrofits, or upgrades in both power generation and large industrial automation systems.

With the Mark VIe platform being GE’s flagship for distributed control systems, the TDBTH6AAA plays a crucial role in enabling safe and structured integration of discrete field inputs, while meeting the stringent requirements of modern energy systems.

Key Features:

• Designed for GE Mark VIe systems

• Supports 48 discrete inputs in TMR configuration

• Optical isolation and transient protection

• Compatible with IS220PDIAH1A/PPDAH1A modules

• Field-proven for turbine & process control

• Terminal block layout for easy wiring

• High reliability in harsh environments

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