Overview

The ABB NTU-7C9 Termination Unit plays a vital role in distributed control systems by serving as the connection bridge between field instrumentation and DCS I/O modules. Designed for ABB Bailey INFI 90 and Net 90 platforms, it simplifies signal wiring while maintaining electromagnetic compatibility and signal integrity.

Moreover, the NTU-7C9 supports analog and digital signal types, including 4–20 mA current loops and 0–10 V DC voltage signals. It features integrated shield grounding to reduce electrical noise and improve system stability. Additionally, its modular design allows for DIN rail or panel mounting, offering flexibility in installation across various industrial environments.

This termination unit is especially valuable for maintaining and upgrading legacy systems. Therefore, it remains a trusted component in facilities where ABB Bailey DCS platforms are still operational.

Technical Data

Typical Applications

• Legacy DCS Systems: Maintains signal integrity in ABB Bailey INFI 90 and Net 90 installations.

• Process Plants: Interfaces analog and digital signals from field devices to control modules.

• Power Generation: Routes turbine and boiler instrumentation signals to DCS I/O.

• Marine Automation: Supports signal termination in shipboard control systems.

• Water Treatment Facilities: Connects sensors and actuators for filtration and dosing control.

For instance, its integrated shielding helps reduce EMI in high-noise environments. Additionally, the flexible mounting options make it suitable for both retrofit and new installations.

FAQ

Q: What systems is the NTU-7C9 compatible with?
A: It’s designed for ABB Bailey INFI 90 and Net 90 distributed control systems.

Q: What types of signals does it support?
A: It supports analog inputs/outputs (4–20 mA, 0–10 V DC) and digital I/O (24 V DC dry/wet contacts).

Q: Is this module suitable for legacy system upgrades?
A: Yes, it’s ideal for maintaining and expanding existing ABB Bailey DCS platforms.

Q: What are the mounting options?
A: It can be mounted on DIN rails or panels depending on system layout.

Q: Does it include shielding for signal lines?
A: Yes, it features integrated shield grounding to enhance EMI protection.