IS400TDBTH2AEF - Discrete Input/Output Terminal Board

SPECIFICATIONS

Part No.: IS400TDBTH2AEF
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Max response time on: 25 ms typical
Max response time off: 25 ms typical
Contact material: Silver cad-oxide
Size: 17.8 cm wide x 33.02 cm high
Temperature: -30 to + 65oC
Technology: Surface-mount
Product Type: Discrete Input/Output Terminal Board
Availability: In Stock
Series: Mark VIe

Functional Description

IS400TDBTH2AEF is a Discrete Input/Output Terminal Board developed by GE. It is a part of the Mark VIe control system. The Discrete Input/Output (TDBT) terminal board serves as a crucial component in turbine control systems, providing reliable contact input/output functionalities. It's important to note that TDBT is not designed to operate correctly with a single PDIO I/O pack. This highlights the system's reliance on redundancy and distributed functionality for optimal performance. The terminal board stands as a vital component in turbine control systems, offering robust input/output capabilities and seamless integration with Mark VIe systems.

Purpose and Design

• It is specifically designed as a Triple Modular Redundancy (TMR) contact input/output terminal board.
• It offers versatile mounting options, supporting both DIN-rail and flat mounting configurations.

Input Capabilities

• TDBT accommodates 24 group isolated contact inputs.
• These inputs are supplied with nominal wetting voltages of 24, 48, or 125 V DC from an external source.
• Specialized noise suppression mechanisms safeguard against surge and high-frequency noise, ensuring signal integrity.

Output Configuration

• The terminal board provides 12 form-C relay outputs, offering flexibility in controlling various components within the system.
• An option card can be added to expand relay functions, tailoring the output capabilities to specific system requirements.

Integration with Mark VIe Systems

• In Mark VIe systems, the PDIO (Programmable Digital Input/Output) I/O pack is compatible with the TDBT terminal board.
• Three PDIO I/O packs plug into D-type connectors on the TDBT and communicate with controllers via Ethernet connections.
• TDBT features three connection points for PDIO, facilitating seamless integration with dual controllers:
  
  • Connector JR1 links to the R controller.
  • Connector JS1 connects to the S controller.
  • Connector JT1 is linked to both R and S controllers.
  • In TMR controller configurations, each PDIO on TDBT is networked to its respective controller, ensuring redundancy and fault tolerance.

Installation

• Mounting Options: The terminal board, along with a plastic insulator, mounts on a sheet metal carrier. This carrier can then be attached to a DIN rail for easy installation. Alternatively, the TDBT plus insulator can be mounted on a sheet metal assembly, which is then bolted into a cabinet.
• Wiring Connections: Connections are wired directly to two sets of 48 terminal blocks. Typically, 18 AWG wires are used for wiring connections. The upper set of terminals, TB1, is dedicated to connecting to the relay portion of the board. The lower set of terminals, TB2, is used for connecting to the contact input circuits.
• Screw Assignments: Screw assignments for the two sets of terminals (TB1 and TB2) mirror those found on the SRLY relay board and the STCI contact input terminal board. This standardization simplifies installation and ensures consistency across different components of the system.
• Shield Termination: Shields from the wiring should be terminated on a separate bracket. Proper shield termination helps minimize electromagnetic interference and ensures reliable signal transmission.

The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS400TDBTH2AEF?
It is a discrete input/output terminal board developed by GE under the Mark VIe series.

What is the purpose of the ID device in the terminal board I/O pack connector?
The ID device serves to uniquely identify each terminal board I/O pack connector within the system.

How is the information from the ID device utilized by the system?
The information from the ID device is interrogated by the I/O processor, allowing the system to identify and verify each terminal board I/O pack connector.

How many ID devices are present in WROB, and what do they represent?
WROB contains three ID devices, one for each PDIO. Each ID device corresponds to a specific PDIO.