The METSO D100314 is an essential electronic component belonging to the Metso DNA (formerly Valmet DNA) automation system.

It is specifically identified as a Bus Buffer Module or Bus Interface Unit, used to ensure signal integrity and electrical isolation across the system’s communication backplane.

1. Product Description

The METSO D100314 is a specialized interface card designed to manage and amplify signals within a Distributed Control System (DCS).

In large-scale industrial setups, signals can degrade over long distances or through multiple rack connections;

the D100314 acts as a buffer to maintain high-speed data communication between the Central Processing Units (like the A413 series) and various I/O modules.

Type: Bus Buffer / Bus Interface Module

System Architecture: Valmet/Metso DNA

Function: Signal conditioning, bus expansion, and electrical isolation.

2. Technical Data Sheet (Specifications)

D100314

Parameter	Specification
Model Number	D100314
Part Type	Bus Buffer Board
Operating Voltage	24V DC (Internal system supply)
Power Consumption	Low-wattage industrial design
Isolation	Galvanic isolation between bus segments
Signal Speed	Optimized for Metso proprietary high-speed backplane
Mounting	Rack-mounted (Plug-in module)
Weight	Approx. 0.5 kg
Indicators	LED status for Power and Bus Activity

3. Related Models

The D100314 is a “support” module that works alongside primary controllers and interfaces:

A413110: Terminal Interface Unit.

A413654 / A413665: Network and Active Control Units (The “brains” that send data through the D100314).

D100315: Often a companion or alternative version with different channel configurations.

DCN / ACN nodes: Modern Metso DNA hardware that utilizes these bus buffers for rack expansion.

4. Application Cases

DCS Rack Expansion: Used when an automation system requires more I/O modules than a single rack can power/address, allowing the bus to extend to a second or third rack.

Signal Stabilization: Applied in environments with high electromagnetic interference (EMI) to “clean” the communication signal before it reaches the processor.

Large-Scale Mining Plants: Managing data flow in heavy-duty mineral processing lines where I/O stations are spread across large distances.

Paper Mills: Ensuring millisecond-accurate communication between sensors and controllers in high-speed paper machine sections.

5. Product Features and Advantages

Signal Integrity: Prevents data loss or “noise” from affecting the control logic, which is vital for safety-critical industrial processes.

Galvanic Isolation: Protects sensitive CPU boards from electrical surges or faults occurring on the I/O bus side.

Plug-and-Play Integration: Designed specifically for the Metso DNA backplane, requiring no complex software configuration to perform its buffering task.

Durability: Built to withstand the heat and vibration of industrial control cabinets.

Easy Diagnostics: Front-facing LEDs allow maintenance teams to verify at a glance if the bus segment is active and powered.

6. Other Models in the Same Series

The D100xxx series typically covers bus management and power distribution within the Metso ecosystem:

D100310 / D100311: Basic bus connection units.

D1004xx Series: Often refers to power distribution or specialized grounding modules.

D200xxx Series: Newer generation I/O and interface modules for the Valmet DNA platform.