METSO A413654 Central Control Module / NCU2 Processor Board
The METSO A413654 is a specialized industrial control component, specifically identified as an NCU2 (Network Control Unit) or Central Control Module.
It is used within the Valmet/Metso DNA automation systems, which are common in heavy industries like mining, pulp & paper, and power generation.
1. Product Description
The METSO A413654 (NCU2) is a high-performance central control module designed to manage data communication and logic execution within a Distributed Control System (DCS).
It acts as a “brain” or a critical communication bridge between various I/O modules and the higher-level monitoring system.
Manufacturer: Valmet / Metso Automation (often branded as Neles/Valmet)
Part Type: Central Control Module / NCU2 Processor Board
Function: Handles system-level communication, diagnostic processing, and interface management for industrial automation networks.
2. Technical Data Sheet (Specifications)
| Parameter | Specification |
| Model Number | A413654 |
| Designation | NCU2 (Network Control Unit 2) |
| Input Voltage | System bus-powered (typically 24V DC environment) |
| Weight | Approx. 1.7 kg |
| Indicator Lights | Front-panel LEDs for Power, Run, Fault, and Link status |
| Communication | High-speed Ethernet and proprietary Metso fieldbus support |
| Environment | Operating temp 0°C to +50°C; non-condensing humidity |
| Country of Origin | Finland |
3. Related Models
The A413654 is part of a modular family. It is frequently seen alongside:
A413110 (TIU6): Terminal Interface Unit often paired with this control module.
A41365x Series: Various iterations of processor and communication boards.
IOP345: Digital Input Modules that feed data into the NCU2.
Valmet DNA AC800M: Larger scale controllers that may integrate with these legacy boards.
A413654
4. Application Cases
Mining & Aggregates: Monitoring and controlling Metso Lokotrack® mobile crushing plants and Nordberg® NP Series impactors.
Pulp & Paper: Managing process logic in Valmet-controlled paper mills, where high-speed synchronization is required for the web press.
Oil & Gas: Integrating safety systems and process automation for Neles valve assemblies in offshore or refinery settings.
Power Generation: Used in DCS systems for coal-fired or renewable power plants to monitor turbine and generator parameters.
5. Product Features and Advantages
Real-time Diagnostics: Provides immediate feedback via onboard LEDs, allowing technicians to identify network or power faults instantly.
High Reliability: Designed for “always-on” industrial environments where system downtime can cost thousands of dollars per hour.
Network Stability: The NCU2 architecture is optimized for stable data throughput even in high-interference (EMI) industrial zones.
Backward Compatibility: Often used as a drop-in replacement or upgrade for older NCU units, extending the life of existing Metso DNA systems.
6. Other Models in the Same Series
A413651 / A413652: Earlier versions or specific variants of the NCU processor series.
A413100: Basic interface cards.
Valmet I/O Series: Analog and digital modules that share the same backplane and control logic architecture.