Model Explanation

51401583-200

51401583: EPNI Series (Process Network Interface)

200: Hardware Upgrade Version (Redundancy Enhanced Type), corresponding to 100 Standard Version

Differences from 100 Version:

100: LCN + Data Hiway, single network as the main mode

200: LCN ↔ UCN Dual Network Redundancy, supports UCN Control Layer, stronger anti-interference capability Technical Specifications

Communication Network: LCN (5 Mbps), UCN (1 Mbps)

Protocol Support: LCN, UCN, TPN, Modbus RTU/TCP, HART (extended)

Redundancy Mode: 1:1 dual machine hot standby, fault switching < 100ms

Power Supply: 24 VDC ±10%, approximately 350 mA

Operating Temperature: 0°C ~ +65°C (5°C wider than version 100)

Isolation Voltage: 2000 VAC (channel - backplane, higher than version 100)

Weight: Approximately 0.5 kg

Certifications: CE, UL, CSA, RoHS, explosion-proof Ex (optional)

Interfaces and Configuration

Backplane: 96-pin gold fingers (TDC 3000 standard I/O backplane)

Network Interfaces:

LCN: Dual BNC (coaxial, redundant)

UCN: Dual DB-25 (twisted pair, redundant)

Status LEDs: Power, Operation, LCN Master/Slave, UCN Master/Slave, Fault, Redundancy Switching

Configuration: DIP switches (network address, redundancy mode, baud rate) + software parameters

Core Functions

Dual Network Redundancy Bridging: Bidirectional data routing between LCN and UCN, seamless redundant switching

Protocol Conversion: LCN/UCN ↔ Modbus / third-party devices, more flexible system integration

Network Management: Node diagnosis, traffic monitoring, fault alarm, log recording

Electrical Isolation: Field and system-side high voltage isolation, suppression of ground loops and interference

System Expansion: Supports up to 64 LCN nodes + 32 UCN controllers Application scenario

System: Honeywell TDC 3000, TPS, Experion PKS (LCN + UCN architecture)

Industry: Petrochemicals, Large-scale Power, Metallurgy, Papermaking, Pharmaceutical (high reliability requirement scenarios)

Purpose: Redundant communication for DCS systems, LCN and UCN controllers/PLCs interconnection, critical device communication guarantee

Installation: TDC 3000 standard I/O rack (51401381-100 with 5 slots, 51401547-100 with 15 slots backplane)