ABB NTCF23 INFI-Net Electric-to-Optic Termination Unit

Product Description: The NTCF23 is an ABB Bailey INFI90 / Symphony Harmony rack INFI‑Net electric-to-optical termination unit (TU). It converts electrical INFI‑Net bus signals into optical fiber signals for long-distance fiber transmission, paired with NTCF22 (optic-to-electric) as a matched pair for redundant fiber network links. It isolates electrical noise and ground loops via fiber media, connecting controllers, I/O modules and operator stations across separated control rooms in the DCS system.

Features:

• Electric to fiber converter for INFI-Net bus, dedicated to INFI90 Symphony Harmony rack
• Works in pairs with NTCF22: NTCF23 (Electrical → Fiber), NTCF22 (Fiber → Electrical)
• Redundant INFI‑Net fiber bus support, ST fiber connector interface
• Built-in lead-acid backup batteries for configuration retention during power interruption
• Eurocard form factor for Harmony backplane rack mounting, hot-swap design
• LED status indicators for power, fiber link, communication and fault diagnosis
• Fiber isolation eliminates EMI, RFI and ground loop interference in power plant environments
• Net weight: 2.721 kg, two internal backup lead-acid batteries

Applications:

• Thermal power plant INFI90 DCS long-distance fiber network extension
• Petrochemical, refinery distributed control system inter-room communication
• Boiler and turbine auxiliary control cabinet fiber backbone networking
• Legacy Bailey Symphony DCS spare replacement and system retrofit
• Pulp & paper, chemical continuous process control fiber communication link

FAQ:

Q: What is the difference between NTCF23 and NTCF22?
A: NTCF23 = Electric-to-Optic (send side); NTCF22 = Optic-to-Electric (receive side). They must be matched as a pair for one fiber link and cannot substitute each other directly.

Q: Can NTCF23 be used on ABB 800xA?
A: No, it belongs to legacy INFI90 Symphony platform and is incompatible with 800xA / AC800M I/O racks.

Q: Is NTCF23 still in production?
A: The INFI90 Symphony series is obsolete. Available supply is NOS surplus or fully tested refurbished units.