Technical Specifications

• Part Number: 51304537‑100 (51304537100)

• Alternative ID: CNI I/O Board, PWB CNI I/O, Rev B

• Module Type: Control Network Interface (CNI)

• System Compatibility: Honeywell TDC3000 / TPS (UCN network)

• Processor: On‑board 16‑bit microcontroller

• Memory: 128 KB RAM, 256 KB Flash (firmware)

• Network Interface: UCN (1 Mbps, redundant A/B, 75Ω coaxial)

• I/O Interface: Backplane connector for IOPs (I/O Processor modules)

• Power: 24 VDC ±10%, 400 mA (backplane)

• Power Consumption: ~9.6 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): 220 × 120 × 25 mm

• Weight: ~0.33 kg

• Coating: Standard (non‑conformal)

• Certifications: CE, RoHS compliant

• Revisions: Common Rev B (hardware/firmware)

• Status: Discontinued (legacy replacement only)

Interface & Communication Configuration

• Host Network: UCN (redundant A/B, 1 Mbps) – connects to system controllers (APM, HPM)

• I/O Backplane: Direct interface to TDC3000 IOPs (analog/digital I/O cards)

• Redundancy: Supports UCN A/B redundancy; module can be paired for fault tolerance

• Diagnostics: On‑board LEDs for power, UCN link, and module health; remote fault reporting via UCN

• Hot Swap: Yes (replace without system shutdown)

• FTA Compatibility: N/A (direct backplane connection to IOPs)

Core Functions

1. UCN‑to‑I/O Routing: Transfers process data and control signals between UCN and local I/O modules。

2. I/O Data Acquisition: Collects analog/digital input data from field devices via IOPs.

3. Control Signal Distribution: Sends regulatory/sequential control outputs from UCN controllers to field actuators.

4. Network Communication Management: Manages UCN protocol, error checking, and data packet routing.

5. Diagnostics & Status Reporting: Monitors module and I/O health; reports alarms to system HMI.

6. Redundancy Switching: Supports automatic failover between redundant UCN paths.

Application Scenarios

• TDC3000/TPS DCS: Core interface module connecting UCN to I/O subsystems。

• Process Industries: Chemical, petrochemical, oil & gas, power, pulp & paper, pharmaceuticals。

• Mixed I/O Environments: Systems requiring integration of analog, digital, and serial I/O.

• Legacy System Maintenance: Replacement for aging CNI boards in TDC3000 migrations.

Compatibility Note

• System Compatibility: Honeywell TDC3000/TPS (UCN network mandatory)

• Replacement: 51304537‑100 (Standard) ↔ 51304537‑200 (Conformal Coated, Rev F)

• Firmware: Requires TDC3000 firmware Rev 300+ for full CNI functionality

• Key Difference: 51304537‑100 = Standard Coating; 51304537‑200 = Conformal Coating for harsh environments