SPECIFICATIONS
Part No.: IS230TDBSH6AA
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Size: 17.8 cm wide x 33.02 cm high
Temperature: -30 to + 65oC
Technology: Surface-mount
Number of input channels: 24 dry contact
Input filter: Hardware filter, 4 ms
Product Type: Contact Input/Relay Output Terminal Board
Availability: In Stock
Series: Mark VIe
Functional Description
IS230TDBSH6AA is a Contact Input/Relay Output Terminal Board developed by GE. It is a part of the Mark VIe control system. The board is a simplex contact input/output terminal board specifically designed for either DIN-rail or flat mounting. The board is equipped with 24 isolated contact inputs. These inputs are grouped to ensure effective isolation between different input sets, enhancing the reliability and safety of the system. The inputs are designed to accept a nominal wetting voltage of 24, 48, or 125 V DC. This wetting voltage is supplied from an external source, providing the necessary power for input detection. Each contact input is built with noise suppression features. These protect the inputs from surges and high-frequency noise, ensuring accurate and stable operation in noisy electrical environments.
Contact Inputs
- The board's contact input functionality is engineered to deliver reliable and accurate signal processing, incorporating advanced on-board signal conditioning akin to that found on the STCI. These contact inputs are specifically scaled for 24, 48, and 125 V DC wetting voltages. The wetting voltage ranges are designed to accommodate variations, with 16 to 32 V DC for the 24 V nominal, 32 to 64 V DC for the 48 V nominal, and 100 to 145 V DC for the 125 V nominal. The threshold voltage, which determines the activation point of the input, is set at 50% of the respective wetting voltage, ensuring precise signal detection.
- To protect the system and ensure consistent performance, input currents are carefully limited. The first 21 circuits have their currents restricted to 2.5 mA, while circuits 22 through 24 are limited to 10 mA. This current limitation is achieved through resistive elements, providing a stable and safe operating environment for the contact inputs. Additionally, the 24 V DC supply on the TDBSH2 is current-limited to 0.5 A, utilizing polymer positive temperature coefficient (PPTC) fuses. These fuses can be reset, adding an extra layer of protection and durability to the system.
- Noise suppression and signal conditioning are critical features of the board. Each contact input is equipped with filters that reduce high-frequency noise and suppress surges at the point of signal entry. This design ensures that only clean and accurate signals are processed. Once the discrete input voltage signals are received, they are directed to the I/O processor. Here, the signals pass through optical isolators, which convert them from analog to digital form. The digital signals are then transferred to the controller, ensuring seamless and accurate communication within the system.
- The contact sensing circuits' detailed descriptions and schematics are available in the I/O pack documentation, providing technical insights and operational guidance. This comprehensive design ensures that the TDBS board's contact inputs are highly reliable and effective, making them ideal for use in industrial environments where precision and resilience are paramount. By integrating features such as current limitation, optical isolation, and resettable fuses, the TDBS board offers a robust solution for complex signal processing needs.
Relay Outputs
- The board's relay outputs are designed with flexibility and ease of use in mind, featuring pluggable type terminals that facilitate straightforward installation and maintenance. The board includes connectors JW1 and JW2, which support the connection of various option boards, allowing for expanded functionality and customization based on specific application needs.
- One of the notable aspects of the TBS board is that the relay configuration remains consistent across different groups (H2, H4, and H6). This uniformity means that while the contact input circuits may vary between these groups, the relay outputs themselves do not change. This consistency simplifies system design and integration, as the same relay configuration can be relied upon regardless of the board group in use.
- The board’s relays are designed to operate with a wide range of voltages, both AC and DC, providing versatility in various electrical environments. This capability ensures that the relays can be deployed in diverse applications without the need for different relay types for different voltage requirements. Whether the system operates at low voltage DC or high voltage AC, the relays are capable of handling the specified voltages reliably and efficiently.
- Furthermore, the use of pluggable terminals on the board enhances the ease of installation and replacement. This design allows for quick and secure connections, reducing downtime and improving overall system maintenance. The connectors JW1 and JW2 add another layer of flexibility, enabling the addition of option boards to extend the relay functions as needed, thus providing a scalable solution for complex control systems.
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 IS230TDBSH6AA?
It is a Contact Input/Relay Output Terminal Board developed by GE under the Mark VIe series.
What is the role of WROB in conjunction with TDBS?
When the WROB is used with the board, it provides isolated voltage feedback to detect the status of the fuses on the board. This feature specifically monitors the six fuse pairs, allowing the system to identify blown fuses and ensuring timely maintenance and replacement.
How does the isolated voltage feedback work for fuse status detection?
The isolated voltage feedback mechanism monitors the voltage across each fuse pair on the TDBS board. If a fuse blows, the feedback system detects the loss of voltage and signals a fault condition. This enables the system to promptly identify and address fuse-related issues, maintaining overall system integrity.
How are the diagnostic alarms and feedback signals managed?
Diagnostic alarms and feedback signals are managed by the board’s integrated diagnostic system. When a fault is detected, such as a drop in wetting voltage or a blown fuse, the system triggers an alarm and provides detailed feedback to the PDIO. This centralized management ensures all diagnostic information is collected and reported efficiently for timely action.
