



Industrial Overview
The ABB Bailey NTCL01 Termination Unit is a critical interface component within the INFI 90 Distributed Control System (DCS), designed to provide robust termination for INFI-NET® and Plant Loop communication networks.
It acts as the essential bridge between control modules and field communication loops, ensuring stable signal routing, accurate data transmission, and simplified wiring architecture inside industrial control cabinets. The NTCL01 is widely recognized for its reliability in long-life legacy automation systems still operating across global process industries.
Engineered for durability and ease of integration, this module supports both twinaxial and coaxial communication media, making it a flexible and dependable solution for industrial network termination requirements.
Technical Specifications
| Parameter | Details |
|---|
| Model | NTCL01 |
| System | ABB Bailey INFI 90 / Network 90 |
| Type | Communication Link Termination Unit |
| Function | INFI-NET / Plant Loop termination interface |
| Communication Interface | Twinaxial / Coaxial cable support |
| Connected Modules | INNIS01, INLIM03, NKLS series (system dependent) |
| Power Requirement | 24 VDC |
| Current Consumption | ~15–25 mA (low power design) |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Mounting Type | Cabinet field termination panel |
| Dimensions (HxWxD) | Approx. 203 × 51 × 178 mm |
| Weight | Approx. 0.3 kg |
Applications
The NTCL01 is widely used in installed ABB Bailey INFI 90 systems across multiple industries:
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Oil & gas production and offshore platforms
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Power generation and utility control systems
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Petrochemical and refinery automation
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Water and wastewater treatment plants
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Industrial process manufacturing facilities
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Legacy DCS maintenance and lifecycle support projects
It is especially important in systems requiring stable loop communication termination and reliable network integrity over long operational lifecycles.
Technical FAQs
1. What is the main function of the NTCL01?
It terminates INFI-NET or Plant Loop communication loops in ABB INFI 90 systems.
2. What systems is it compatible with?
It is used in ABB Bailey INFI 90 and Network 90 DCS platforms.
3. What type of cables does it support?
It supports coaxial and twinaxial communication cables.
4. What is its power requirement?
It operates on a 24 VDC supply with low current consumption.
5. What modules does it typically connect with?
It is commonly used with INNIS01 and related network interface modules.
6. Is it still used in modern automation systems?
It is mainly used in existing legacy INFI 90 installations.
7. What is the operating temperature range?
0°C to 70°C.
8. Is it a signal processing module?
No, it is a termination interface module for communication loops.
9. How is it installed?
It is mounted inside control cabinets on field termination panels.
10. What is its main benefit in DCS systems?
It ensures stable and noise-resistant communication loop termination.