Product Overview

The General Electric IS200TDBSH2A is a high-density Discrete Simplex Terminal Board designed for the Mark VIe and EX2100 excitation control systems. This essential component serves as the physical interface between field discrete inputs/outputs and the control processor. By consolidating 96 individual terminal points, the IS200TDBSH2A facilitates the organized termination of contact inputs and relay outputs, ensuring that signal transmission remains stable and noise-resistant. It is specifically engineered for simplex (non-redundant) configurations within GE's Speedtronic turbine control architecture, providing a streamlined and reliable connection point for critical automation data.

Hardware Parameters and Key Technical Characteristics

The IS200TDBSH2A is built to maintain signal integrity across wide temperature variations and high-vibration industrial settings.

• Manufacturer General Electric (GE)

• Model Number IS200TDBSH2A

• Control System Series Mark VIe / EX2100 Excitation

• Board Configuration Discrete Simplex (Single Channel)

• Terminal Capacity 96 total terminals distributed across two blocks (TB1 and TB2)

• Power Supply Standard +24V DC operating voltage

• Wiring Interface Two 48-point vertical screw-type terminal blocks

• Connector Type Multi-pin female interface port for control rack interconnection

• Operating Temperature -40°C to +70°C (-40°F to +158°F)

• Physical Weight 0.22 kg

• Dimensions 2.1 x 18.6 x 26.3 cm

• Mounting Type DIN-rail or cabinet panel mounting via standoffs

Industrial Applications and Operational Use Cases

This terminal board is a staple in power generation and heavy industrial facilities where discrete signal management is vital for turbine safety.

• Gas and Steam Turbine Control Interfacing limit switches, pressure switches, and auxiliary contact inputs with the Mark VIe processor for machinery protection.

• Excitation System Management Facilitating discrete control signals within the EX2100 excitation loop to manage generator field current and voltage regulation.

• Sequence of Events (SOE) Monitoring Capturing high-speed contact transitions to provide millisecond-accurate data for post-event analysis and troubleshooting.

• Remote I/O Termination Acting as a centralized hub for field discrete wiring in localized control cabinets, reducing cable runs to the main control room.

• Balance of Plant (BoP) Automation Managing start/stop commands and status feedback for auxiliary pumps, motors, and fans in combined cycle power plants.

By utilizing the IS200TDBSH2A, maintenance engineers can ensure a high level of wiring organization and signal reliability, minimizing the risk of intermittent faults caused by poor terminal connections in demanding industrial environments.