Technical Specifications

• Part Number: 51304493‑250 (51304493250)

• Module Type: APM/PM UCN Modem Card, Conformal Coated

• Communication Rate: 1 Mbps (UCN network standard)

• Transmission Medium: 75Ω coaxial cable (RG‑6/RG‑11); fiber via media converter

• Network Topology: Peer‑to‑peer, redundant UCN (dual modem support)

• Operating Voltage: 5 VDC ±5% (backplane‑powered)

• Power Consumption: ~15 W

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -40°C to +85°C

• Humidity: 5%–95% RH, non‑condensing

• Dimensions (H×W×D): 233 × 120 × 25 mm (APM/PM slot form factor)

• Weight: ~0.62–0.75 kg

• Certifications: UL‑listed, CE‑compliant, CSA‑certified

• Coating: Conformal coated (harsh/environmentally challenging areas)

• Revisions: Common Rev E, H, N

Interface & Communication Configuration

• Controller Interface: APM/PM backplane (TDC3000/TPS controller slot)

• Network Interface: UCN (1 Mbps, connects to IOPs, FTA, and other UCN nodes)

• Redundancy: Dual modem cards (primary/backup) for fault‑tolerant UCN

• Diagnostics: On‑board LED status indicators; UCN link fault detection; controller bus diagnostics

• Wiring: 75Ω coaxial cable for UCN trunk; shielded connectors recommended

• Hot Swap: Yes (replace module without system shutdown)

Core Functions

1. UCN Communication Bridge: Connects APM/PM controller to all UCN IOPs (DI/DO/AI/AO) and field devices.

2. High‑Speed Data Transfer: 1 Mbps ensures real‑time control for up to 63 UCN nodes.

3. Conformal Coating Protection: Resists moisture, dust, chemicals in harsh environments.

4. Redundant Network Support: Enables dual UCN paths to eliminate single points of failure.

5. Signal Conditioning: Amplifies/conditions UCN signals for long‑distance transmission (up to 10 km with fiber).

6. Fault Monitoring: Detects UCN cable breaks, signal loss, or node failures; reports to system alarms.

Application Scenarios

• TDC3000/TPS DCS: Core communication card for APM/PM controllers in process industries.

• Harsh Environments: Offshore, wastewater, chemical plants (coated version mandatory).

• Process Control: Chemical, petrochemical, power, pulp & paper (UCN backbone).

• Legacy System Expansion: Replacement/upgrade for aging TDC3000 modems in tough conditions.

• Redundant Control Systems: Critical loops requiring 100% uptime (ESD, turbine control).

Compatibility Note

• System Compatibility: Honeywell TDC3000/TPS (APM/PM controller slots only).

• Network Compatibility: UCN (Universal Control Network) 1 Mbps protocol.

• Difference from 51304493‑200: ‑250 is conformal coated; ‑200 is non‑coated (standard environment).

• Replacement: Direct replacement for 51304493‑000/100/200 series modems (check revision compatibility).