Description
Overview
The Honeywell 51401946-100 main process control board is a central computing module engineered for Honeywell distributed control environments, including the TDC 3000 and Experion PKS platforms. Designed to support continuous industrial operations, the board integrates a processor platform, system memory, storage interface, and a built-in battery module that preserves system data during unexpected power loss.
This controller board acts as the processing backbone for control logic execution, communication management, and system monitoring within Honeywell PLC and DCS infrastructures. Its integrated battery ensures retention of volatile memory and enables safe shutdown procedures when the primary power supply is interrupted.
Key Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Honeywell |
| Model |
51401946-100 |
| Product Type |
Main Process Control Board / PLC Motherboard |
| Processor |
Intel Atom D2701 Dual-Core Processor |
| Clock Speed |
1.6 GHz |
| System Memory |
2 GB DDR2 RAM |
| Storage Interface |
SATA with support for industrial HDD or SSD |
| Typical Storage Configuration |
250 GB SATA Hard Drive |
| Operating Platform |
Windows Embedded Standard 7 |
| Ethernet Interface |
10/100/1000BASE-T Gigabit Ethernet |
| Backup Power |
Integrated lithium battery for memory retention |
| System Function |
Process control computation and system management |
| Dimensions |
120 × 80 × 50 mm |
| Weight |
1.41 lbs |
Functional Characteristics
The Honeywell 51401946-100 board performs several critical control system functions. It executes process control algorithms, manages I/O communications, and supervises system diagnostics within the automation architecture. The onboard battery maintains volatile data and configuration memory, preventing loss of critical operational parameters during temporary power interruptions.
Gigabit Ethernet connectivity supports integration with distributed network components, operator workstations, and remote I/O subsystems. Combined with an embedded operating system platform, the board provides a stable environment for process automation tasks.
Industrial Applications
This motherboard module is typically deployed in process control infrastructures where uninterrupted system availability and deterministic performance are required.
Common installation environments include:
• Oil and gas production facilities
• Power generation plants
• Chemical and petrochemical processing
• Pharmaceutical manufacturing
• Water treatment and utility automation
• Large-scale manufacturing control systems
Maintenance and Installation Notes
For reliable operation, the integrated lithium backup battery should be periodically inspected as part of scheduled maintenance procedures. The module should be installed within a climate-controlled control cabinet or industrial rack to ensure proper thermal management and protection from contaminants.
Compatibility with specific Honeywell system architectures should always be confirmed prior to replacement or integration into an existing control network.
FAQ
What is the primary role of the 51401946-100 board in a control system?
It functions as the central processing board responsible for executing control logic, managing communication with field devices, and maintaining operational data within Honeywell DCS environments.
Does the board support data protection during power outages?
Yes. An integrated lithium battery maintains system memory and configuration data, allowing safe shutdown procedures and preventing data loss.
Which Honeywell systems typically use this module?
It is commonly used within Honeywell TDC 3000 and Experion PKS control architectures.
