ABB TU813 Compact Modular Terminal Unit

• Compact Layout: Adopting a compact design concept, it has a small size and can realize high-density I/O module installation in limited control cabinet space, effectively saving space. It is especially suitable for industrial environments with strict space requirements, such as small automated production lines and field cabinets of distributed control systems.​

• Connection Method: Equipped with three rows of crimp-type plug-in connectors for connecting field signals and process power supplies. This crimping connection method is not only easy to operate, enabling quick completion of wiring work, but also firm and reliable, maintaining stable connection in harsh industrial environments with vibration and impact, reducing the risk of signal interruption or electrical failure caused by loose connections.​

• Mechanical Configuration: There are two mechanical keys for mechanical configuration of different types of I/O modules. Each key has six positions, and up to 36 different configuration modes can be achieved through combination. This mechanical configuration method is simple and intuitive, and will not affect the functions of the MTU or I/O modules, ensuring that different modules can be accurately adapted during installation and maintenance, reducing the possibility of equipment damage or system failure caused by incorrect installation. At the same time, mechanical configuration can also prevent the insertion of wrong types of I/O modules, playing a certain role in preventing misoperation.​

• Installation Method: It adopts DIN rail mounting, which can be conveniently and quickly installed on standard DIN rails. And it is equipped with a DIN rail locking device for grounding, ensuring that the entire unit is reliably connected to the grounding system during equipment operation, effectively avoiding equipment failures caused by static accumulation, electrical interference and other factors, and ensuring the safety and stability of the system.​

• Rated Voltage and Current: The maximum rated voltage is 250V, which can adapt to the access of field signals of various industrial standard voltage levels. The maximum rated current of each channel is 3A, which can meet the power supply requirements of common field equipment such as sensors and actuators, ensuring stable operation of the equipment within the normal working range.​

• Signal Isolation: It has good signal isolation performance, which can effectively resist electrical interference between different channels and between field signals and the system interior, ensuring the accuracy and stability of signal transmission, and improving the anti-interference ability of the system in complex electromagnetic environments.​

• Module Bus Connection: It is responsible for distributing module bus signals to I/O modules and the next MTU, ensuring orderly transmission of data within the system. At the same time, it generates correct addresses for I/O modules by shifting output position signals, ensuring accurate identification and communication of each module in the system, and realizing efficient data interaction and collaborative work.​

• Efficient Connection and Wiring: Its multi-row crimp-type plug-in connector design greatly improves the efficiency of field wiring, reducing wiring time and workload. Compared with traditional wiring methods, crimping connections are more reliable, reducing the problem of poor contact caused by loose wiring, and ensuring long-term stable operation of the system.​

• Flexible Configuration Capability: The rich mechanical configuration options enable the TU813 to flexibly adapt to various types of I/O modules, such as DI 820, DI 821, DI 825, DO 820, DO 821 and AI 825. In system upgrades, transformations or different project applications, there is no need to replace the entire terminal unit. By simply adjusting the mechanical key configuration, it can adapt to new I/O module requirements, reducing system integration and maintenance costs.​

• High Reliability Guarantee: Good electrical isolation performance and firm connection design enable the TU813 to work stably in the face of complex industrial field environments such as strong electromagnetic interference, vibration and temperature changes, ensuring the accuracy of signal transmission and the reliability of equipment operation. The grounding design of the DIN rail locking device further enhances the safety of the system, effectively protecting equipment and personnel.​

• Industrial Automated Production Lines: In automated production lines such as automobile manufacturing and electronic equipment production, the TU813 is used to connect various sensors (such as position sensors, temperature sensors) and actuators (such as motor drivers, solenoid valves) with I/O modules, accurately transmit the status signals of field equipment to the control system, and transmit control commands to actuators, realizing automated control and monitoring of the production process, and ensuring efficient and stable operation of the production line.​

• Process Control Systems: In process industrial fields such as chemical industry, petroleum and electric power, it is used to connect various on-site instruments (such as pressure transmitters, flow sensors) with I/O modules of the control system. Through stable signal transmission, it realizes real-time monitoring and precise control of key parameters such as temperature, pressure and flow in the production process, ensuring safe and stable operation of the production process and preventing production accidents caused by abnormal parameters.​

• Intelligent Building Control Systems: In intelligent buildings, it can connect sensors of equipment such as lighting systems, air conditioning systems and security systems with I/O modules of controllers, realizing centralized control and intelligent management of various equipment in the building, improving the energy efficiency and comfort of the building, and providing users with a convenient and efficient living and working environment.​

• Installation Environment: It should be installed in a dry, well-ventilated environment without severe vibration, avoiding direct sunlight and humid environments. The working temperature range is recommended to be between -25℃ and 70℃ to ensure normal operation of the equipment. At the same time, it should be kept away from strong electromagnetic interference sources such as large motors and electric welders. If unavoidable, additional shielding measures such as using metal shielding wire slots for wiring should be taken to prevent electromagnetic interference from affecting signal transmission quality.​

• Wiring Specifications: Strictly follow the product manual for wiring operations to ensure that the crimp-type connectors are firmly connected, avoiding problems such as virtual connections and short circuits. When connecting field signals and process power supplies, attention should be paid to distinguishing positive and negative polarities to ensure correct wiring. For different types of signals (such as analog signals and digital signals), wiring should be separated as much as possible to reduce mutual interference between signals.​

• Configuration Check: After installing a new I/O module or adjusting the mechanical key configuration, it is necessary to carefully check whether the configuration is correct to ensure that the TU813 and the I/O module can communicate and work together normally. The connection status and signal transmission can be tested through the system's own diagnostic tools or related software to find and solve potential problems in a timely manner.​

• Regular Maintenance: Regularly inspect the TU813 to check for loose or oxidized connectors, and handle them in a timely manner if there are problems. At the same time, regularly clean the dust on the surface of the equipment to prevent dust accumulation from affecting the heat dissipation and electrical performance of the equipment. In addition, relevant maintenance tools provided by ABB can be used to check the module bus connection status and address allocation to ensure long-term stable operation of the system.​

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