IS200TBCIH2CBC - Contact Input Terminal Board

SPECIFICATIONS

Part No.: IS200TBCIH2CBC
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Number of channels: 24
Excitation voltage: Nominal 24 V dc
Input filter: Hardware filter, 4 ms
Power consumption: 20.6 watts on the terminal board
Temperature rating: 0 to 60 oC
Size: 33.02 cm high x 10.16 cm wide
Temperature rating: 30 to 65 oC
Product Type: Contact Input Terminal Board
Availability: In Stock
Series: Mark VIe

Functional Description

IS200TBCIH2CBC is a contact input terminal board developed by GE. It is a part of Mark VIe control system. The Contact Input Terminal Board serves as a pivotal interface, accommodating 24 dry contact inputs. These inputs are meticulously wired to two barrier-type terminal blocks, ensuring organized and efficient connectivity. Additionally, the TBCI incorporates a dedicated DC power input specifically allocated for contact excitation. Notably, the contact inputs are fortified with noise suppression circuitry, providing robust protection against surge and high-frequency noise, ensuring the integrity of incoming signals.

Channel Configuration and Excitation Voltage

• Number of Channels: The terminal board accommodates 24 contact voltage input channels, facilitating a substantial capacity for handling multiple input sources concurrently.
• Excitation Voltage: Operating with a nominal 24 V DC excitation voltage, the system functions in a floating capacity, offering a voltage range spanning from 18.5 to 32 V DC. This wide range ensures adaptability to various voltage scenarios, enhancing operational versatility.

Input Filter and Power Consumption

• Input Filter: Equipped with a hardware filter featuring a 4 ms response time, the TBCI enhances signal processing and minimizes potential noise interference, ensuring accurate and reliable contact input detection.
• Power Consumption: The terminal board demonstrates a power consumption rate of 20.6 watts. This efficiency in power usage ensures optimal operational functionality without unnecessary energy wastage, enhancing overall system efficiency.
• The meticulous design and technical specifications of the TBCI underscore its capacity to efficiently manage multiple contact inputs, providing robust noise suppression mechanisms and a wide excitation voltage range, culminating in reliable and high-performance contact input functionalities.

Installation

• Wiring Configuration: The 24 dry contact inputs are directly wired to two I/O terminal blocks mounted on the TBCI. These blocks are firmly secured using two screws, providing stability and facilitating easy disconnection for maintenance purposes. Each block is equipped with 24 terminals capable of accommodating wires up to #12 AWG, ensuring secure and efficient connectivity. Adjacent to each terminal block, a shield terminal strip attached to chassis ground mitigates interference, ensuring signal integrity.
• Power Connection Setup: The excitation voltage, crucial for the functionality of the contact inputs, is wired through plugs JE1 and JE2. This power connection is vital for sustaining the operational integrity of the terminal board, providing the necessary voltage for the contact inputs to function effectively.
• Cabling and Connectivity: For system configuration, connector JR1 is used for simplex systems, streamlining connections for standard setups. However, in Triple Modular Redundant (TMR) systems, all three connectors are utilized, ensuring redundancy and enhanced reliability, even in the event of potential component failure.
• Cables or I/O packs are selectively plugged in based on the specific Mark VI or Mark VIe system requirements and the desired redundancy level. This adaptability in cabling connections allows for compatibility across various system architectures, ensuring scalability and flexibility in meeting operational needs.

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 IS200TBCIH2CBC?
It is a contact input terminal board developed by GE under the Mark VIe series.

How are high-frequency noise and surge handled in the contact inputs?
Filters integrated into the TBCI play a crucial role in minimizing high-frequency noise and suppressing surges. Positioned near the point of signal entry, these filters effectively reduce noise interference, ensuring stable and reliable signal processing within the system.

How is the 125 V DC supply managed for the contact inputs?
Prior to feeding each contact input, the 125 V DC bus from the turbine control system is subjected to current limitation in the power distribution module. This precautionary measure ensures controlled current flow, safeguarding the contact inputs against potential issues related to excessive current levels, thereby enhancing operational stability and protection.