ABB Bailey NTCF22 Bus Electro-Optical Conversion Terminal Unit

Product Description

NTCF22 is the INFI‑Net Electric-to-Optic Termination Unit (TU) for ABB Bailey INFI‑90 DCS. It works in pair with NTCF22 (Optic-to-Electric TU). It converts INFI‑Net coaxial electrical bus signals into optical signals for long-distance fiber transmission and EMI suppression. It is a key component of INFI‑90 DCS backbone fiber link. The unit integrates optical transmitter, bus driver and fault monitoring circuits with built-in lead-acid batteries. This model is discontinued and supplied as spare part for legacy power plant DCS.

Technical Specifications

• Model: NTCF22
• System: ABB Bailey INFI‑90 / INFI‑Net DCS
• Function: INFI-Net bus electrical to optical conversion
• Bus Protocol: INFI‑Net proprietary bus protocol
• Transmission Media: Coaxial cable input, optical fiber output
• Dimensions: H 228.6 mm × W 213.36 mm × D 160.02 mm
• Net Weight: 2.721 kg
• Built-in Battery: 2 pcs lead-acid batteries
• Operating Temperature: 0℃ ~ +60℃
• Protection Class: IP20 (cabinet mounting)
• Diagnosis: Communication link & bus supervision, fault LED indicators
• Certifications: CE
• RoHS: Non-RoHS compliant

Application

1. INFI‑Net backbone fiber extension for INFI‑90 DCS, converting coaxial bus to fiber for long-distance transmission
2. Fiber communication construction for boiler and turbine control network in power plants, cross-building / cross-cabinet, anti-EMI
3. Paired with NTCF22 to establish complete “electric → optical → electric” fiber communication link
4. Spare part replacement and network retrofit for legacy INFI‑90 systems in power, petrochemical and metallurgy
5. Redundant fiber backbone setup to improve DCS control network reliability

Series Models

NTCF21, NTCF22, NTDI01, NTDI02, NTCL01