ABB’s TU890 3BSC690075R1 is a compact modular termination unit (MTU) designed for S800 I/O systems. As a passive unit, the MTU is not only used to connect the field wiring and power supply to the I/O module, but also contains a part of the ModuleBus, making the installation of the I/O module more compact. The TU890 MTU has grey terminals for field signal and process voltage connections and is capable of handling signals with a maximum rated voltage of 50V and a maximum rated current of 2A per channel, although these parameters are mainly limited by the specific values of the I/O module design and its certified application.

The mechanical keying function of the TU890 3BSC690075R1 module end unit prevents incorrect module insertion, while its locking device ensures a stable installation on the DIN rail. In addition, it supports use with a variety of I/O modules, including AI890, AI893, AI895, AO890, AO895, DI890 and DO890, for intrinsically secure application scenarios.

TU890

The module terminating units are also designed to comply with a variety of international standards such as CE marking, IEC 61131-2 electrical safety certification, ATEX/IECEx Zone 2 hazardous site certification, and IP20 protection levels, ensuring reliability and safety in a variety of industrial environments.

TU890 3BSC690075R1 has a wide range of applications, not only plays an important role in industrial automation control systems, but also has key applications in intelligent instruments and other fields. Through this module, the data of various sensors and instruments can be collected, processed, stored and transmitted, and then the state of equipment and system can be effectively monitored and controlled.