METSO D100314 Bus Buffer / Bus Interface Module
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.