Technical Specifications

• Part Number: 51304511‑200 (51304511200)

• Module Type: NIM/LCN Modem PWB Card

• Communication Rate: 1.2 Mbps (LCN network)

• Ports: Dual LCN channels (A/B, 75Ω coaxial)

• Power Input: 24 VDC (NIM backplane)

• 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): 200 × 120 × 40 mm

• Weight: ~0.24 kg

• Certifications: CE, RoHS compliant

• Coating: Conformal coated (improved reliability)

• Revisions: Common Rev C, D

• Status: Discontinued (legacy replacement only)

Interface & Communication Configuration

• Host Interface: NIM chassis PNI I/O slot (plug‑in)

• Network Interface: Dual LCN (A/B) 75Ω coaxial connectors (RG‑6/RG‑11)

• Redundancy: Supports redundant LCN (A/B channels) for fault tolerance

• Diagnostics: On‑board LEDs for link/channel health; remote monitoring compatible

• Wiring: 75Ω coaxial cable for LCN trunk; shielded connectors required

• Hot Swap: Yes (replace NIM modem without system shutdown)

Core Functions

1. LCN Communication Hub: Connects NIM to TDC3000 controllers, HMIs, and field devices via 1.2 Mbps LCN.

2. High‑Speed Data Transfer: Supports real‑time control data exchange for critical process applications.

3. Dual‑Channel Redundancy: A/B LCN channels ensure seamless failover if one link fails.

4. Signal Conditioning: Amplifies and conditions LCN signals for reliable long‑distance transmission.

5. Network Diagnostics: Monitors LCN link health; detects cable breaks/signal loss and reports alarms.

6. Protocol Support: NIM protocol integration with TDC/LCN systems; compatible with Honeywell firmware/tools.

Application Scenarios

• TDC3000/TPS DCS: Core modem card for NIM chassis in process industries.

• Legacy System Upgrades: Replacement for aging NIM/LCN modems in operational TDC3000 plants.

• High‑Speed Control Networks: Critical loops requiring 100% uptime (chemical, power, pulp & paper).

• Redundant LCN Networks: Works with redundant NIM chassis for end‑to‑end redundancy.

• DCS Maintenance: Spare part for NIM chassis in existing Honeywell installations.

Compatibility Note

• System Compatibility: Honeywell TDC3000/TPS (NIM chassis PNI I/O slot only).

• Network Compatibility: LCN (Local Control Network) 1.2 Mbps protocol.

• Replacement: Direct replacement for 51304511‑100 (non‑conformal coated) modem card.

• Firmware: Requires compatible NIM firmware (Rev J+ for LCN communication).