SPECIFICATIONS
Part No.: IS230TBCIH5C
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
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
Product Type: Contact Input Terminal Board
Availability: In Stock
Series: Mark VIe
Functional Description
IS230TBCIH5C is a Contact Input Terminal Board developed by GE. It is a part of the Mark VIe control system. The Contact Input Terminal Board (TBCI) serves as a crucial component in control systems, providing connectivity for 24 dry contact inputs. Designed for reliability and versatility, the TBCI facilitates seamless integration of contact-based signals into monitoring and control applications.
Features
- Terminal Block Configuration: It features two barrier-type terminal blocks for wiring the 24 dry contact inputs, ensuring secure and efficient connections. This configuration simplifies installation and maintenance processes, enhancing overall system usability.
- Power Supply and Excitation: DC power is supplied to the TBCI for contact excitation, ensuring consistent and reliable operation of the contact inputs. This power provision mechanism enables to effectively detect and process signals from connected devices or sensors.
- Noise Suppression Circuitry: To safeguard against surge and high-frequency noise, the contact inputs are equipped with advanced noise suppression circuitry. This circuitry acts as a protective barrier, ensuring signal integrity and reliability even in challenging industrial environments prone to electrical disturbances.
- Filtering Mechanisms: Filters are incorporated to reduce high-frequency noise and suppress surge on each input near the point of signal entry. This strategic placement of filters enhances the robustness of the TBCI, minimizing the impact of external interference and ensuring accurate signal detection and processing.
- Power Configuration for Dry Contact Inputs: The dry contact inputs on H1 are powered from a floating 125 V DC supply, with a range of 100-145 V DC. This voltage configuration ensures compatibility with turbine control systems and other industrial power sources, enabling seamless integration and operation.
- Current Limiting Mechanism: The 125 V DC bus supplying power to the contact inputs is current-limited in the power distribution module before feeding each contact input. This precautionary measure enhances safety and protects the TBCI and connected devices from potential overcurrent situations.
Wiring
- Wiring Configuration of the Contact Input Terminal Board: The Contact Input Terminal Board features a straightforward and efficient wiring setup, facilitating easy integration of dry contact inputs into industrial control systems. Here's an in-depth exploration of the wiring configuration:
- Direct Connection to I/O Terminal Blocks: The 24 dry contact inputs are directly wired to two I/O terminal blocks mounted. These terminal blocks serve as the interface between the contact inputs and the control system, allowing for secure and reliable signal transmission.
- Modular Design for Maintenance: The I/O blocks are held in place with two screws, enabling easy removal and replacement for maintenance purposes. This modular design enhances accessibility and simplifies maintenance tasks, minimizing downtime and ensuring uninterrupted system operation.
- Terminal Block Specifications: Each I/O block is equipped with 24 terminals, providing ample connectivity options for the dry contact inputs. These terminals are capable of accepting wires up to 12 AWG, accommodating a wide range of wire sizes commonly used in industrial applications.
- Shield Terminal Strip for Grounding: Adjacent to each terminal block is a shield terminal strip attached to chassis ground. This strip serves as a crucial component for grounding, ensuring electrical safety and mitigating the risk of electromagnetic interference (EMI). By providing a dedicated grounding point, the shield terminal strip helps maintain signal integrity and reliability in the presence of external disturbances.
- Secure Mounting and Accessibility: The terminal blocks and shield terminal strips are securely mounted, providing stability and reliability in operation. Additionally, their placement on the board ensures easy access for wiring and maintenance tasks, further enhancing the convenience and usability of the TBCI.
Cabling Connections
- Simplex System Configuration: In a simplex system configuration, connector JR1 is utilized for cabling connections. This connector facilitates the integration of cables or I/O packs, depending on the type of Mark VI or Mark VIe system being used. In this setup, only one connector is engaged, streamlining the cabling process and ensuring efficient connectivity.
- TMR System Configuration: For a Triple Modular Redundant (TMR) system configuration, all three connectors are utilized to maximize redundancy and reliability. These connectors enable the connection of cables or I/O packs to the TBCI, ensuring redundancy at the system level. By employing all three connectors, the TMR system enhances fault tolerance and system resilience, minimizing the risk of downtime and ensuring continuous operation.
- Selection of Cables or I/O Packs: The choice between cables or I/O packs for cabling connections depends on the specific requirements of the Mark VI or Mark VIe system, as well as the desired level of redundancy. Cables and I/O packs offer different advantages and may be selected based on factors such as ease of installation, compatibility, and system architecture.
- Integration with Mark VI or Mark VIe Systems: Designed to seamlessly integrate with both Mark VI and Mark VIe systems, providing compatibility and flexibility for a wide range of industrial applications. Whether it's a legacy Mark VI system or the latest Mark VIe platform, the TBCI ensures smooth connectivity and reliable performance, enhancing the overall functionality of the control system.
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 IS230TBCIH5C?
It is a Contact Input Terminal Board developed by GE under the Mark VIe series.
What happens if the excitation voltage drops below 40 percent of the nominal voltage?
If the excitation voltage falls below 40 percent of the nominal voltage, a diagnostic alarm is triggered and latched by the I/O pack. This alarm serves as an early warning indication of potential issues with the excitation voltage, allowing for timely intervention and maintenance to prevent system downtime.
How are diagnostic tests conducted on the inputs associated with the terminal board?
As part of diagnostic testing, all inputs associated with the terminal board are forced to the open contact (fail-safe) state. Any input that fails this diagnostic test is subsequently forced to the fail-safe state, and a fault is generated. This proactive testing mechanism helps identify and address potential failures within the system.
What action is taken if the input from the board does not match the TMR voted value from all three boards?
If the input from the terminal board does not match the Triple Modular Redundant (TMR) voted value from all three boards, a fault is generated. This discrepancy indicates a potential inconsistency in the input data, prompting further investigation and corrective action to ensure system integrity and reliability.
How are terminal board connectors identified and monitored?
Each terminal board connector is equipped with its own ID device, which is interrogated by the I/O pack. The connector ID contains essential information such as the board serial number, board type, revision number, and the location of the JR1/JS1/JT1 connector. If a mismatch is detected between the connector ID and the expected configuration, a hardware incompatibility fault is generated.
