SPECIFICATIONS
Part Number: IS230TDBSH4A
Manufacturer: General Electric
Series: Mark VIe
Input filter: Hardware filter, 4 ms
Max response time on: 25 ms typical
Max response time off: 25 ms typical
Contact material: Silver cad-oxide
Function: Contact Input Assembly
Availability: In Stock
Country of Manufacture: United States (USA)
Functional Description
IS230TDBSH4A is a Contact Input Assembly manufactured and designed by General Electric. It is a part of the Mark VIe Control System. Designed for DIN-rail or flat mounting, the board accepts 24 group isolated contact inputs. Each input is designed to be well-isolated from the others, preventing interference that could compromise data accuracy. These inputs are supplied with a nominal 24, 48, or 125 V DC wetting voltage from an external source. This flexibility in voltage options allows users to adapt the board to different power supply configurations based on their specific needs.
Features
- To ensure the reliable operation of the contact inputs, the board is equipped with noise suppression circuitry. This circuitry serves to protect the inputs against surge events and high-frequency noise that may occur in industrial environments. By effectively filtering out these unwanted disturbances, the component ensures that the input signals remain clean and consistent, improving the overall reliability and stability of the connected system.
- In addition to its contact input capabilities, the board provides 12 form-C relay outputs. These relay outputs offer versatile switching capabilities, allowing users to control various external devices, equipment, or processes. The form-C relays are known for their ability to switch both normally open and normally closed contacts, making them ideal for a wide range of control applications.
- It offers expandability through the use of different option cards. These option cards can be easily installed into the board to enhance and customize the relay functions. The availability of various option cards enables users to tailor the TDBS board to suit specific requirements, allowing for more sophisticated and complex control setups.
- With its compact and robust design, the board is well-suited for DIN-rail or flat mounting. This form factor ensures easy installation and efficient use of space in control cabinets or equipment enclosures. The robust construction of the board ensures its durability in demanding industrial environments, contributing to its long-term reliability and performance.
Installation Procedure
- The board, in combination with a plastic insulator, is designed for secure mounting on a sheet metal carrier. This sheet metal carrier can then be easily attached to a DIN rail, providing a convenient and standardized mounting solution for industrial control systems. Alternatively, for specific installation requirements, the TDBS board and insulator can be mounted on a sheet metal assembly, which is then securely bolted inside a cabinet. This versatility in mounting options allows users to select the most suitable configuration based on their application needs and available space.
- The connections are efficiently wired directly to two sets of 48-point terminal blocks, using typically #18 AWG wires. These terminal blocks facilitate the seamless integration of the board into the system, providing reliable and organized connections to external devices and equipment. The upper set of terminals, known as TB1, is dedicated to connecting to the relay portion of the board, enabling control over various external processes and devices. On the other hand, the lower set of terminals, TB2, is utilized to connect to the contact input circuits, enabling the monitoring and processing of various contact inputs.
- To maintain consistency and ease of use, the screw assignments for the two sets of terminals, TB1 and TB2, are designed to be identical to those found on the SRLY relay board and the STCI contact input terminal board. This standardization ensures a uniform and familiar wiring process, reducing the risk of wiring errors and simplifying the integration into existing systems.
- For optimal signal integrity and noise immunity, shields from the shielded cables are terminated on a separate bracket. This approach ensures that any electromagnetic interference or noise is effectively grounded, preventing any adverse effects on the data transmission or signal accuracy.
- It also provides the option for additional functionality through the use of a relay option board. This optional board can be conveniently plugged onto the TDBS connectors JW1 and JW2, and its connection is securely held in place by the force of the connectors. This modular approach allows users to expand the relay functions of the TDBS board without the need for extensive rewiring or complex installation procedures. It offers a flexible and efficient way to tailor the system to meet specific requirements, enabling engineers to achieve sophisticated control setups.
WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs contact us.
FREQUENTLY ASKED QUESTIONS
What is IS230TDBSH4A?
It is a Contact Input Assembly manufactured and designed by General Electric
How is the threshold voltage determined for the contact inputs?
The threshold voltage for the contact inputs is set at 50 percent of the corresponding wetting voltage. This ensures that the system can accurately detect the transition between the on and off states of the contact inputs.
What are the contact input currents for circuits 1 to 21 and circuits 22 to 24?
The contact input currents are resistance limited to 2.5 mA for circuits 1 to 21, and 10 mA for circuits 22 to 24. These current limits help protect the circuits and ensure safe and reliable operation.
What is the current limiting mechanism for the 24 V DC supply?
The 24 V DC supply is current limited to 0.5 A using polymer positive temperature coefficient (PTC) fuses that can be reset. These PTC fuses act as protective devices that limit the current flow, preventing potential overloads and short circuits. In the event of an overload, the PTC fuses can be reset once the fault is resolved.
How are the contact sensing circuits configured in the I/O pack description?
The contact sensing circuits are described in detail in the I/O pack description. This description provides information on how the circuits are connected and the functionality of each sensing circuit, enabling users to understand and utilize the contact input capabilities effectively.
