Metso D201505 (ACN C20 Controller)

The Metso D201505 is a high-density Network Controller belonging to the ACN C20 family within the Metso DNA (now Valmet DNA) Distributed Control System. 

It serves as a central hub for logic execution and communication management.

1. Introduction

The D201505 is an Automation Cloud Node (ACN) designed to act as a Process Controller and Data Concentrator. It bridges the gap between the supervisory network and the field-level I/O. Unlike standard I/O modules, the D201505 contains its own processor to run control applications and manage local I/O buses. 

It is typically found in compact control cabinets or as a distributed controller for specific machine sections.

2. Technical Parameter Table

3. Related Models

The D201505 is often used in systems containing these related components:

D201505R: The redundant version, specifically pre-configured for master/slave failover pairs.

D201463: A closely related network controller used for I/O concentration.

D201138 (IBC): Interface Bus Controller for connecting local I/O modules.

DNA-FIO Modules: The field I/O cards (D201134. D201126. etc.) that report to this controller.

4. Application Cases

Machine Control: Specifically used in Metso Outotec mineral processing equipment, such as cone crushers and vibrating screens.

Boiler Control: Managing fuel-to-air ratios and water levels in small-to-medium utility boilers.

Waste-to-Energy: Controlling localized incinerator processes and gas cleaning systems.

Pulp & Paper: Coordinating the drying or chemical additive sections of a paper machine where a localized, fast-acting controller is required.

5. Product Advantages and Features

Integrated Power Supply: A standout feature; it can take AC mains power and provide fused 24V DC to sensors, reducing the need for external power supplies in the cabinet.

Deterministic Fiber Network: Uses high-speed fiber optics for the ACN network, ensuring immunity to electrical noise and providing consistent data updates.

Compact Footprint: Combines processing, communication, and power distribution in one module, saving significant rail space.

Ruggedized for Field Use: Designed with high resistance to vibration and temperature fluctuations, suitable for mounting directly on heavy machinery.

Easy Maintenance: Supports hot-swapping in redundant configurations, allowing the plant to remain running during hardware replacement.

6. Other Models in the Same Series

The ACN C20 / D201 series includes several variants for different scales:

D201139 (IPS): Intelligent Power Supply for the ACN rack.

D201376 / D201380: Advanced RT/MR nodes for high-capacity, plant-wide control.

D201220: Multi-protocol communication gateway for connecting third-party PLCs.

AIF series: Specialized Analog Interface units for vibration monitoring.