Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | MP-DNCF02-200 |
| Part Number | 51402455-100 |
| Manufacturer | Honeywell |
| System Family | TDC 3000 / TPS Classic DCS |
| Product Type | Dual Node Card File Assembly |
| Hardware Function | Card rack, backplane, module mounting assembly |
| Node Configuration | Dual Node |
| Backplane Type | Passive control system backplane |
| Supported Architecture | Honeywell LCN-based systems |
| Installed Hardware | Control cards, communication cards, node modules |
| Cooling | Fan assembly supported |
| Power Distribution | Internal card power distribution |
| Mounting Method | Control cabinet/rack installation |
| Typical Application | Process control system cabinets |
| Operating Environment | Industrial automation control rooms |
| Replacement Category | Legacy DCS infrastructure component |
Product Introduction
Honeywell 51402455-100 MP-DNCF02-200 Product Introduction
Honeywell 51402455-100 MP-DNCF02-200 is a Dual Node Card File assembly designed for Honeywell TDC 3000 and TPS distributed control systems. The unit provides the physical foundation for installing and connecting multiple control system boards inside a DCS cabinet, allowing processor, communication, and application-specific modules to exchange data through the internal backplane structure.
The Honeywell 51402455-100 MP-DNCF02-200 supports dual-node system layouts where two independent node sections are integrated within the same card file assembly. This design was widely used in large process plants where continuous operation, modular expansion, and long equipment service life were important requirements.
The Honeywell 51402455-100 MP-DNCF02-200 remains relevant for maintenance of installed TDC 3000/TPS systems. Many facilities continue operating these platforms because of validated control strategies, extensive engineering databases, and significant field integration work.
When replacing this assembly, engineers should verify the complete hardware arrangement, including installed cards, node configuration, power connections, and LCN communication architecture. A matching part number alone does not confirm a complete system replacement.
51402455-100 MP-DNCF02-201
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A legacy DCS node experiences intermittent communication loss, unexpected module resets, or unstable card operation. Individual control cards may test correctly, but the actual problem can originate from the card file assembly, backplane connections, or power distribution path.
In older Honeywell systems, the card rack is part of the control infrastructure. Mechanical wear, connector aging, and cooling problems can create faults that appear to be software or module failures.
Typical Applications
Oil & Gas Processing
Used for:
- Refinery process control systems
- Compressor stations
- Pipeline monitoring applications
- Hydrocarbon processing units
Chemical Production
Applied for:
- Batch control systems
- Reactor monitoring
- Process sequencing applications
Power Generation
Used in:
- Boiler control systems
- Auxiliary equipment control
- Plant monitoring systems
Industrial Manufacturing
Applied for:
- Continuous production lines
- Legacy automation cabinets
- Long-service process control installations
Technical Pitfalls to Avoid
1. Verify Card File Revision
Before replacement, confirm:
- MP-DNCF02 revision level
- Node configuration
- Installed card arrangement
- Cabinet wiring details
Different card file variants may appear similar but are not always interchangeable.
2. Inspect Backplane Condition
Check for:
- Bent connector pins
- Oxidized contacts
- Loose card seating
- Physical damage
Intermittent backplane connections can create random system faults.
3. Check Cooling System
The fan assembly is important for maintaining acceptable operating conditions.
Inspect:
- Fan operation
- Airflow path
- Cabinet ventilation
- Dust accumulation
4. Document Existing Configuration
Before removing the card file:
- Record every installed module position
- Capture node addressing information
- Verify cable connections
- Save available system configuration data
This reduces commissioning time after installation.
Related Products
- Honeywell 51402455-100 MP–201
Related DNCF dual-node card file designation used for the same 51402455-100 hardware family. Verify suffix details before replacement. - Honeywell 51402454-100
Dual Node I/O Card Cage assembly used within classic Honeywell cabinet configurations. - Honeywell 51402457-200
Dual Node Card File with Fan Assembly variant for different console/cabinet configurations. - Honeywell 51401477-100
Related card file assembly used in classic Honeywell systems; confirm node architecture before substitution. - Honeywell 51305072-200 / 51305072-300
LCN-related I/O interface cards commonly installed in DNCF-based architectures. - Honeywell TDC 3000 Distributed Control System
Classic process automation platform using modular node hardware and LCN communication.
