Description
Application Scenarios
A natural gas liquids (NGL) fractionation plant operating a Honeywell TPS system began experiencing LCN node time-drift warnings that caused inconsistent event timestamps across its Historian and safety-linked control loops—a compliance risk during pipeline custody-transfer audits. The root cause was traced to a degraded processor board in one of the LCNP4M nodes. After replacing it with a tested Honeywell 51403776-100, the plant restored clean deterministic network processing and re-established precise GPS time synchronization across the entire LCN. Timestamps realigned within milliseconds, audit logs became legally defensible again, and the maintenance team noted that the new board’s rigid spacer form factor also improved card-stack alignment and airflow in the rack.
This real-world case illustrates the dual value of the 51403776-100: it is simultaneously the brains of the node (executing control strategies and managing I/O communication) and the backbone that keeps the processor stack mechanically and thermally stable. For plants running TDC 3000, TPS, or hybrid Experion PKS architectures, this board is not a commodity spare—it is the component that safeguards control continuity, data integrity, and regulatory compliance.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 51403776-100 (alt. 51403776100) |
| Manufacturer | Honeywell (USA) |
| Product Category | Processor Board / Control Network Interface Module (LCNP4M) |
| Architecture | LCNP4M – Logix Control Network Processor 4M |
| System Compatibility | Honeywell TDC 3000 / TPS / Experion PKS (C300 integration) |
| Microprocessor | Motorola 68040 (high-speed RISC-class processor) |
| Memory | 16 MB |
| Network Architecture | LCN (Local Control Network) + UCN (Universal Control Network) |
| LCN Protocol | IEEE 802.4 token-bus (5 Mbps deterministic) |
| Time Synchronization | GPS time-sync interface for network-wide clock alignment |
| Slot / Interface | 3.3V PCI-X slot compatible |
| Firmware Requirement | GUS release R110.1 or higher |
| Hardware Revision | Rev. B / Rev. D (verify against installed base) |
| Core Functions | Control strategy execution, I/O communication management, LCN/UCN processing |
| Mechanical Role | System processor spacer board (alignment, thermal clearance, isolation) |
| PCB Construction | 94V-0 flame-retardant FR-4 substrate |
| Weight | Approx. 0.23 kg (0.50 lbs) |
| Operating Temperature | 0°C to +60°C (control-room environment) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH, non-condensing |
| Mounting | TDC 3000 / TPS system rack, backplane-seated |
| Certifications | CE compliant |
