Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 51402455-100 |
| Board Revision | MP-DNCF02-201 |
| Brand | Honeywell |
| Product Type | C300 Controller Mainboard |
| System Family | Experion PKS C300 Controller |
| Related Revisions | MP-DNCF02-200, MP-DNCF02-100 |
| Typical Role | Controller processor / mainboard module |
| Availability | Surplus, refurbished, or unused old stock |
| Documentation | No verified public OEM datasheet located |
| Installation | C300 controller chassis; verify slot and firmware compatibility |
Product Introduction
The C300 controller is the workhorse of many Honeywell Experion PKS systems, and when the mainboard fails, the entire control node can go offline. The Honeywell 51402455-100 MP-DNCF02-201 is a C300 controller mainboard associated with that platform. It appears in surplus listings alongside the closely related MP-DNCF02-200 and MP-DNCF02-100 revisions, which are described as controller or mainboard modules.
Because no official OEM datasheet was found for the exact MP–201 revision, this board should only be used as a like-for-like replacement when the failed module carries the same 51402455-100 part number and MP–201 marking. Revision differences between -100, -200, and -201 variants may affect firmware, memory mapping, or controller compatibility.
QA/QC Transparency SOP
- Intake & Origin Verification: Confirm both 51402455-100 and MP–201 are present on the board label or silk screen. Record serial number, revision, and any sub-codes. Inspect for burnt components, corroded connectors, or replaced labels.
- Visual & Mechanical Inspection: Verify connector type, board edge condition, mounting brackets, and chassis compatibility. Ensure it matches the original controller slot layout.
- Live Functional Testing: Install into a compatible controller or verified test fixture. Confirm power-up, controller recognition, and absence of fault indicators.
- Firmware & Configuration Verification: Read board identification and firmware revision. Compare against the existing configuration to avoid revision mismatch faults.
- Final QC & Anti-Static Packaging: Label with test date, revision, and test status. Pack in ESD-safe materials with connector protection and a summary of verified functions.
Field Engineer Gotchas
Revision mismatch. MP–201 is not automatically interchangeable with MP–200 or MP–100. Solution: match the exact revision on the failed board before ordering.
Controller firmware dependency. The controller relies on firmware and configuration data stored across multiple modules. A swapped mainboard may not inherit the correct configuration automatically. Solution: verify controller recognition and configuration integrity after installation.
Wrong chassis slot. controllers have specific slot assignments for processor, I/O link, and communication modules. Installing this board in the wrong slot can prevent startup. Solution: photograph the original slot layout before removal.
Silent communication faults. The board may power up but fail to communicate with the ControlNet or I/O modules if firmware or addressing is wrong. Solution: confirm controller status from the Experion workstation, not just from local LEDs.
Surplus labeling risk. Third-party listings may group all MP- revisions together. Solution: require photos of the actual nameplate showing MP–201.
HONEYWELL 51402455-100 MP-DNCF02-201
Application Scenarios
controller repair. When a controller fails to start or loses communication, the mainboard is a primary suspect. A verifi replacement can restore controller functionality without replacing the entire assembly.
Experion PKS obsolescence support. Plants running legacy Experion PKS systems may need tested mainboards to maintain production while migration plans are still pending.
Redundant controller maintenance. In redundant configurations, a failed primary or secondary controller mainboard can be replaced with a verified unit to restore redundancy before the next scheduled turnaround.
Case note: A facility replaced a failed mainboard with a surplus unit labeled only as “51402455-100.” The controller powered up but failed to load the configuration. The replacement turned out to be an MP–200 variant. Once a verifi board matching the original revision was installed, the controller rejoined the network without further issues.
FAQ
Is Honeywell 51402455-1 still in production?
It appears to be a legacy controller module. Supply is typically surplus, refurbished, or unused old stock.
What does this board do?
It is a controller mainboard used in Honeywell Experion PKS DCS systems.
Can I substitute MP–200 or MP–100?
Not automatically. Revision differences may affect compatibility. Match the exa marking.
How do I verify it before installation?
Check both part numbers on the board, confirm slot compatibility, test power-up, and verify controller communication from the Experion workstation.
Is there an official datasheet?
No verified public OEM datasheet was located for the exa revision.
Can it be used in a new controller?
Only if the controller chassis, firmware, and configuration support this revision. It is not recommended for greenfield designs without full OEM documentation.
Does it work with redundant configurations?
Yes, but both primary and secondary controllers should use compatible revisions. Mixing revisions can cause synchronization issues.
