IS400TDBTH2A | General Electric | Mark VIe Discrete Terminal Board

Description

The IS400TDBTH2A is a discrete input/output terminal board designed for the General Electric Mark VIe control system. This component serves as a robust interface for digital signals, facilitating the connection between field wiring and the I/O processor modules. It accommodates multiple dry contact inputs and provides relay outputs to support comprehensive industrial automation control loops. Engineered for high reliability in demanding environments, the module functions efficiently within steam/gas turbine control, power generation assets, and process plant applications, ensuring seamless system compatibility and signal integrity across the Mark VIe platform.

Features

• Provides direct termination for external field wiring with secure screw clamp connections.
• Supports discrete contact inputs and integrated relay outputs on a single board footprint.
• Implements onboard optical isolation to protect internal control electronics from field-side voltage surges.
• Features diagnostic LEDs to deliver immediate visual status of relay coil states and input channels.
• Designed for compact panel mounting with high-density channel layout to optimize enclosure space.

Applications

• Utility and industrial gas turbine control systems.
• Steam turbine sequence control and safety interlocking.
• Balance of Plant (BOP) discrete device monitoring.
• Emergency shutdown (ESD) and critical interlock validation.

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Mounting: Securely mount the board vertically inside the enclosure using the designated standoff mounting holes or standard DIN rail hardware options.
• Grounding: Ensure the chassis ground terminal is connected directly to the low-impedance master enclosure ground bus.
• Wiring: Route discrete AC/DC field wiring separately from low-voltage network cables to mitigate electromagnetic interference (EMI).
• Isolation Check: Verify all field dry contacts are completely unpowered before connecting to prevent damage to the internal optical couplers.