TJM120701

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Terminal Junction Systems (TJM) serve as an important part of many industrial control systems. These systems are used to direct the flow of electrical signals between physical input/output modules and the main control unit of a system. This document will provide an overview of the TJM120701 model, discussing its application field and working principle.

Application Field

The TJM120701 model of Terminal Junction Systems is suitable for use in a wide array of industrial automation applications. It can function as an input/output (I/O) interface in complex systems with multiple inputs and outputs, managing the flow of information between the control unit and the I/O modules. This makes it ideal for applications such as equipment monitoring, process control, SCADA systems, and automated machinery.

The TJM120701 is also well-suited for use in applications that require a discrete connection between the field devices and the control system. This is because it provides isolating between field devices and the control system, protecting the system’s components from ground loops, back currents, and other electromagnetic interference (EMI).

Working Principle

At the most basic level, the TJM120701 is an electrical switch that enables the connection of the input/output (I/O) modules of a control system to the main control unit. When the system is up and running, it switches between the open and closed states, allowing signals to flow in the correct direction. This ensures the correct flow of information between the I/O modules and the control system.

The TJM120701 consists of two components: a base board and a set of reed relays. The base board serves as the connection point between the I/O modules and the control system. The relays are wired to the base board, providing the switching functionality. When the relays switch to their open state, electrical signals can flow freely; when they switch to their closed state, the signals are blocked.

The TJM120701 also provides diagnostic functions. When the system goes into a diagnostic mode, it sends electrical signals to the I/O modules, testing whether they are properly connected. This ensures that there is a reliable connection between the I/O modules and the control system, reducing the potential for problems during operation.

In addition, the TJM120701 includes a built-in safety mechanism to protect the system. In the event of a power failure or a system malfunction, it triggers an alarm to alert the user and prevent further damage to the equipment.

Conclusion

Terminal Junction Systems (TJM) provide a vital link between physical input/output modules and the main control unit of an industrial automation system. They are essential for applications such as equipment monitoring, process control, SCADA systems, and automated machinery. The TJM120701 model is particularly well-suited for these applications, providing a reliable and flexible connection with the I/O modules and the control system.

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