Toshiba UTNH23A CIEMAC nV TC-net100 Optical Shared Hub Unit

UTNH23A is the A-line optical shared hub of Toshiba CIEMAC nV series DCS, manufactured in Japan, matched with UTNH23B (B-line) for dual redundant TC-net100 star fiber network architecture. It serves as core optical switching equipment for the 100Mbps TC-net industrial bus, connecting HFAS11S main CPU, USIO21 remote I/O stations, UTLH21 optical ring modules and operator stations via multi-mode fiber, realizing deterministic real-time process data forwarding.

This hub integrates built-in AC wide-range power supply, multiple fiber optical ports and dual RJ45 Ethernet uplink ports. It must be paired with UTNH23B to build fully redundant A/B dual bus networks, supporting automatic fault bypass and hot-swap maintenance. Equipped with complete status LED indicators, it is widely used as spare communication hardware for thermal power, petrochemical Toshiba CIEMAC nV DCS overhaul and expansion projects.

Main Specifications

• Brand: Toshiba; Model: UTNH23A; Series: CIEMAC nV DCS TC-net100 Optical Hub, Origin: Japan
• Bus Standard: TC-net100 industrial deterministic bus, transmission rate 100Mbps, DOMA access protocol
• Power Input: AC 95~250V wide-range power, built-in power module inside unit
• Interfaces: Multi-channel multi-mode fiber TX/RX ports, dual RJ45 Ethernet monitoring uplink ports
• Redundancy Matching: Paired with UTNH23B for A/B dual redundant bus system; interconnection cable max length 3m
• Fiber Transmission: Multi-mode optical fiber, single segment maximum transmission distance 2km
• Environment Index: Operating temperature 0℃~+55℃; humidity 5%~95%RH non-condensing; storage -10℃~+60℃
• Diagnosis Indicator: Front panel PWR, RUN, LINK, FAULT, optical channel status LED array
• Core Features: Hot-swappable rack installation, hardware self-test, point-to-point/multicast/broadcast data relay
• Application: Spare optical shared hub for Toshiba CIEMAC nV distributed control system TC-net backbone network

Core Functions

• Build star-type TC-net100 fiber backbone, aggregate communication data from central CPU and distributed remote I/O cabinets
• Forward real-time analog flow/temperature/pressure signals and digital interlock switch signals with fixed low delay
• Coordinate with UTNH23B dual redundant hub, automatically switch communication channel when single hub/fiber fails without production interruption
• Dual Ethernet ports connect engineering workstation EWS and operator monitoring panels to upload alarms, trends and control parameters
• Optical fiber transmission completely isolates electromagnetic interference from high-voltage equipment, large motors and frequency converters in industrial workshops
• Built-in full hardware self-diagnosis quickly locate fiber disconnection, port damage, communication timeout and power supply anomalies
• Support online hot replacement without cabinet power cut, compatible with nV-Tool engineering software for network topology configuration debugging

Application Scenarios

• Thermal power plant boiler, turbine auxiliary room CIEMAC nV DCS central control cabinet TC-net star optical network layout
• Petrochemical refining workshop distributed field I/O stations long-distance redundant fiber communication backbone construction
• Municipal large sewage treatment plant multi-area decentralized DCS signal transmission supporting projects
• On-site faulty optical hub replacement and regular overhaul maintenance of Toshiba nV series DCS communication cabinets
• Old factory automation renovation to expand multi-station remote signal collection coverage via TC-net fiber star topology
• Toshiba CIEMAC nV series TC-net optical communication spare parts inventory backup for energy and chemical manufacturing enterprises
• Metallurgical heating furnace, chemical reactor critical process uninterrupted dual redundant fiber network transformation engineering