Description
The BAILEY NTRL02A Fiber Optic Remote I/O Termination Unit is a communication interface module designed for ABB Bailey INFI 90 and Net 90 distributed control systems. It provides fiber optic communication between remote I/O stations and the main control system, enabling reliable long-distance signal transmission in industrial automation environments.
The NTRL02A connects with the IMRIO02 Remote I/O Slave Module and supports fiber optic remote link communication through dedicated TX and RX optical ports. It is designed to provide electrical isolation, noise immunity, and stable data exchange between remote field I/O locations and central controllers.
This termination unit is widely used in power generation, process industries, chemical plants, and other critical automation applications where ABB Bailey INFI 90 systems remain in service. The NTRL02A is commonly maintained as a spare replacement component for existing control installations.
NTRL02A
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | BAILEY |
| Model | NTRL02A |
| Series | INFI 90 / Net 90 Remote I/O Series |
| Product Name | Fiber Optic Remote I/O Termination Unit |
| Part Number | NTRL02A |
| Assembly Number | 6637638E1 / 6644811A1 (Related Assembly Versions) |
| Product Status | New Surplus / Used Spare Stock |
| Application | DCS Remote I/O Communication, Industrial Process Control |
| Compatible Module | IMRIO02 Remote I/O Slave Module |
| Dimensions | Approx. 203 × 102 × 229 mm |
| Weight | Approx. 0.3 kg – 0.5 kg |
| Origin / Place of Origin | United States |
| Power Supply | System Backplane / Termination Panel Powered |
| Communication Interface | Fiber Optic TX/RX Remote Link |
| Fiber Transmission Distance | Up to Approx. 3 km (system dependent) |
| Installation Type | NFTP01 Field Termination Panel Mounted |
| Operating Environment | Industrial Control Cabinet Environment |
| Discontinued Status | Legacy Product / Spare Parts Available |
❓ Common Questions & Answers
Q: What is the main function of BAILEY NTRL02A?
A: The NTRL02A provides fiber optic communication termination between remote I/O modules and the central Bailey INFI 90 control system.
Q: Which Bailey systems use the NTRL02A?
A: It is mainly used in ABB Bailey INFI 90 and Net 90 distributed control systems with remote I/O architectures.
Q: What is the difference between NTRL02A and NTRL03?
A: The NTRL02A uses fiber optic communication, while NTRL03 is an electrical remote link termination unit designed for different communication applications.
Q: What modules connect with NTRL02A?
A: The NTRL02A is designed to interface with the IMRIO02 Remote I/O Slave Module and related Bailey termination equipment.
Q: What are common causes of NTRL02A communication failure?
A: Typical issues include damaged fiber optic cables, incorrect TX/RX connections, poor optical connectors, power supply problems, or faulty termination wiring.
Q: Can NTRL02A replace another Bailey termination unit?
A: Replacement should be verified by exact model number, communication type, hardware revision, and existing INFI 90 system configuration.
Q: Is BAILEY NTRL02A still manufactured?
A: The NTRL02A is considered a legacy INFI 90 component and is mainly available through industrial automation spare-part suppliers and existing inventory.
⭐ Recommended BAILEY Models
- BAILEY IMRIO02 – Remote I/O Slave Module
- BAILEY NTRL02B – Fiber Optic Remote I/O Termination Unit
- BAILEY NTRL03 – Electrical Remote Link Termination Unit
- BAILEY NTCS04 – Control I/O Termination Unit
- BAILEY NTDI01 – Digital I/O Termination Unit
- BAILEY NTDO01 – Digital Output Termination Unit
- BAILEY NTAI02 – Analog Input Termination Unit
- BAILEY NTAM01 – Analog Master Termination Unit
- BAILEY NTCF01 – Optic to Optic Termination Unit
- BAILEY NTCF02 – Optic to Electrical Termination Unit
- BAILEY NTCF03 – Electrical to Optical Termination Unit
- BAILEY IMMFP01 – Multi Function Processor Module
- BAILEY IMMFP02 – Multi Function Processor Module
- BAILEY IMDSO14 – Digital Output Module
- BAILEY IMASI23 – Analog Input Module
