Description
The Honeywell 51403645-100 SBHM is a Single Board History Module designed for Honeywell TDC 3000 DCS architectures. It integrates historical data storage functions into a dedicated LCN-based module, replacing earlier multi-board history configurations and providing a compact solution for long-term process data retention.
The Honeywell 51403645-100 SBHM is used to record process variables, alarms, events, and operational information generated by the control system. Historical records stored by the SBHM allow operators and engineers to analyze plant performance, investigate process deviations, and support maintenance decisions.
The Honeywell 51403645-100 SBHM operates as part of the TDC 3000 LCN network architecture and should be considered a system-level component rather than a conventional I/O module. Correct replacement requires verification of LCN configuration, installed software revision, and associated history database compatibility.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 51403645-100 |
| Manufacturer | Honeywell |
| Product Type | Single Board History Module (SBHM) |
| System Compatibility | Honeywell TDC 3000 DCS |
| Network Architecture | LCN (Local Control Network) |
| Primary Function | Process history storage and retrieval |
| Storage Interface | SCSI-based storage interface |
| Storage Capacity | Approx. 1.8 GB per logical drive (configuration dependent) |
| Logical Drives | Dual logical drive support |
| Power Supply | LCN bus powered, 5 VDC |
| Installation | Standard TDC 3000 card rack slot |
| Data Functions | Historical trends, events, alarms, process records |
| Operating Temperature | Approx. -25°C to +70°C |
| Relative Humidity | 5–95% RH non-condensing |
| Application Area | Process industries, power generation, chemical, oil & gas |
| Related Assembly | 51403698-100 SBHM Motherboard Assembly |
Product Introduction
Honeywell 51403645-100 SBHM Product Introduction
Honeywell 51403645-100 SBHM is a Single Board History Module developed for Honeywell TDC 3000 distributed control systems. It provides dedicated historical data management capability, allowing process information generated by controllers, operator stations, and system nodes to be stored and retrieved for analysis.
The Honeywell 51403645-100 SBHM was introduced as an integrated history solution within the TDC 3000 platform. Earlier history functions often required multiple hardware components, while the SBHM combines storage management and processing functions into a single board-level module.
The Honeywell 51403645-100 SBHM communicates through the TDC 3000 LCN environment and works with the system database and history applications to maintain long-term records of plant operation. These records are important for troubleshooting, production analysis, regulatory reporting, and process optimization.
The module is commonly found in mature process plants that continue operating Honeywell legacy control systems. These facilities often maintain original TDC 3000 hardware because of extensive engineering configuration, validated control strategies, and long equipment service periods.
For replacement projects, engineers should confirm the existing history configuration, database compatibility, LCN node assignment, and storage condition before installation.
51403645-100
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A plant historian or operator station shows missing trends, incomplete event records, or unavailable historical data. The immediate assumption is often a software problem, but the cause may be related to the SBHM hardware, storage media, LCN communication, or database integrity.
Historical data modules are critical because they support troubleshooting after abnormal events. A failed history module may not stop the process immediately but can remove valuable diagnostic information.
Typical Applications
Oil & Gas Processing
Used for:
- Refinery process history recording
- Compressor operating data storage
- Alarm and event analysis
- Production reporting
Chemical Plants
Applied for:
- Batch process records
- Reaction monitoring
- Process trend analysis
Power Generation
Used in:
- Boiler process history
- Turbine auxiliary monitoring
- Operational event review
Continuous Manufacturing
Applied for:
- Production quality analysis
- Equipment performance tracking
- Long-term process trending
Technical Pitfalls to Avoid
1. Verify LCN Compatibility
Before replacement, confirm:
- LCN node configuration
- Hardware revision
- System software compatibility
- Database requirements
A physically matching board may still require system-level configuration changes.
2. Check Storage Media Condition
Common issues include:
- Aging storage drives
- Data corruption
- Failed interfaces
- History database errors
Legacy storage hardware should be evaluated before returning the system to service.
3. Preserve Existing History Data
Before replacing:
- Backup available history files
- Record system configuration
- Document node assignments
- Verify restoration procedures
Historical records may be required for operational investigations.
4. Confirm Related Hardware
The SBHM is associated with the Honeywell history hardware assembly, including the 51403698-100 SBHM motherboard assembly. Confirm the complete hardware arrangement before replacement.
Related Products
- Honeywell 51403698-100 SBHM Motherboard Assembly
Associated SBHM hardware assembly used within Honeywell FSC/TDC 3000 architectures. - Honeywell 51403645-600 SBHM Drive Assembly
Related SBHM drive assembly variant used in the same hardware family. - Honeywell TDC 3000 LCN Modules
Communication and processing modules operating within the Local Control Network architecture. - Honeywell FSC System Modules
Legacy Honeywell control components supporting process automation applications. - Honeywell TPS (TotalPlant Solution)
Successor architecture maintaining compatibility with many TDC 3000-era systems.
