The Toshiba UTNH23A is an 8-port Fiber Optic Shared Hub Unit engineered specifically for Toshiba TC-net 100 industrial information and control networks.
Deployed within high-reliability industrial automation environments—such as thermal power generation, electrical substations, water treatment, and heavy petrochemical facilities—the UTNH23A manages optical data distribution across critical control loops and distributed controller nodes.
Technical Specifications
| Parameter | Specification |
| Manufacturer | Toshiba Corporation |
| Product Series | TC-net 100 Industrial Network Series |
| Model / Part Number | UTNH23A |
| Device Type | 8-Port Fiber Optic Shared Hub / Network Repeater Unit |
| Network Compatibility | TC-net 100 (specifically tailored for Line A / Line B redundant optical transmission loops) |
| Port Capacity | 8 Optical Fiber Communication Ports |
| Network Management | Built-in Simple Network Management Protocol (SNMP) support |
| Mounting Format | Subrack / DIN-rail or panel mounting inside industrial control cabinets |
| Operating Temperature | 0°C to +55°C (32°F to +131°F) standard industrial operating range |
Core Features & Operating Capabilities
- High-Speed Optical Media Conversion: Functions as a robust optical shared hub that links distributed nodes, extending communication distance and ensuring noise-immune data transfer via fiber optics.
- TC-net 100 Integration: Designed natively for Toshiba’s proprietary deterministic control network, supporting real-time data exchange between central controllers, engineering stations, and remote I/O drops.
- Network Redundancy Support: Frequently deployed in dual-loop configurations (Line A / Line B) to maintain continuous process control availability even during primary cable or path interruptions.
- Built-In SNMP Monitoring: Features integrated Simple Network Management Protocol capability, allowing network administrators to track link status, traffic health, and node connectivity remotely.
- Electromagnetic Immunity: Optical isolation prevents ground loops and eliminates the effects of heavy industrial electromagnetic interference (EMI) originating from large motors, transformers, and switchyards.
Related Toshiba Automation & Network Hardware
- TC-net 100 Modules — Toshiba optical network interface and communication cards.
- Unified Controller nv Series — Large and medium-scale controller racks (Type 1 / Type 2).
- OIS-DS / SVR-DS — Toshiba Operator Interface and Server stations.
