Model Interpretation

4352A: TCM, 2×MT‑RJ fiber Ethernet (100 Mbps) + 4×DB‑9 serial (RS‑232/485)

P/N: 3000590‑xxx series

Family: 4352A (fiber TCM; vs 4351B copper TCM, 4329 legacy coax NCM)

Compatibility: Tricon 8110/8111/8112 chassis; hot‑swappable; TMR/non‑TMR

Key Distinction: Fiber‑only Ethernet (MT‑RJ); no RJ45; for long‑haul/EMI‑heavy areas

Technical Parameters

Electrical & Power

Power: 24VDC (backplane, 20.4–28.8VDC), 1.0A max, ~5W

Isolation: 500VDC port‑to‑backplane; galvanic isolation for all ports

Redundancy: TMR 2oo3 voting; dual‑port network redundancy support

Communication Interfaces

Ethernet (2×MT‑RJ, 100 Mbps fiber):

NET 1: Safety network (peer Tricons, time sync, TSAA)

NET 2: Open network (DCS, OPC, TriStation, SOE)

Cable: 62.5/125 μm multimode fiber; Max distance: 2 km (no repeater)

Serial (4×DB‑9, RS‑232/422/485):

Speed: Up to 115.2 kbps per port; Total throughput: 460.8 kbps

Protocols: Modbus RTU/ASCII, TriStation, custom serial

Protocols: Modbus TCP/RTU, TSAA, TriStation, SNTP, OPC UA

Mechanical

Form Factor: 3U, 19” rack, 1 slot

Dimensions (W×H×D): 483 × 127 × 305 mm

Weight: ~2.3 kg

Mounting: Plug‑in backplane, hot‑swappable

Environmental

Operating Temp: 0°C to +60°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: IEC 61508 SIL3, TÜV, UL, CE, ATEX, FM

Diagnostics & Indicators

LEDs: PASS, FAULT, ACTIVE, FIRM, LINK1, LINK2, TX/RX per port

Monitoring: Link status, error counters, TMR voting health, time sync

Protection: ESD, surge, short‑circuit, overtemperature

Core Functions

Fiber Optic Long‑Distance Communication

2×100 Mbps MT‑RJ fiber ports enable 2 km safe communication in high‑EMI areas (e.g., near motors, power substations), avoiding copper cable noise issues.

SIL3 Fault‑Tolerant Networking

TMR 2oo3 voting ensures no single‑point failure; all data paths comply with SIL3 for safety‑critical loops (ESD, F&G).

Ethernet + Serial Multi‑Protocol Integration

Simultaneously supports Modbus TCP (fiber) and Modbus RTU (serial) to connect DCS, HMI, PLCs, and legacy serial devices in one module.

Hot‑Swap & Redundancy

Online replacement without shutdown; dual‑fiber ports support network redundancy for maximum uptime.

System Diagnostics & SOE

Enables SOE logging, remote diagnostics, and TriStation programming; propagates system alarms to external hosts.

Applications

Oil & Gas: Offshore ESD/F&G; long‑distance safety communication between platforms

Chemical/Refining: High‑EMI areas (furnaces, compressors); fiber connection to DCS

Power Generation: Boiler BMS/Turbine TMC; peer Tricon sync via fiber

Legacy System Upgrades: Replacing 4329 coax with modern fiber while retaining serial device support