Description

Metso D201505 (ACN‑C20) Automation Cloud Node Controller

Technical Specifications

• Part Number: D201505
• Brand: Metso
• Warranty: One Year
• Platform: Metso / Valmet DNA DCS system, ACN‑C20 distributed process controller
• Processor: 32‑bit high‑performance RISC processor, executes local control logic & I/O bus management
• Power Supply: 110‑230 VAC universal mains input; integrated 24 VDC field power output, max 2.0 A
• Communication Interfaces:
  • 2 × multi‑mode fiber optic ports for ACN token‑ring redundant fieldbus
  • 1 × Ethernet port for supervisory host network connection
• Operating Temperature: ‑10 °C ~ +50 °C cabinet‑mount; storage ‑40 °C ~ +85 °C
• Mounting: DIN‑rail / rack‑mount metal housing; IP20 indoor cabinet‑only installation
• Diagnostics: Front‑panel LED status indicators; internal fault‑event log; communication‑link failure detection
• Function: Local control logic execution, remote I/O bus master, data concentration between supervisory network and field I/O modules
• Weight: approx 0.40 kg

Product Overview

The D201505 (ACN‑C20) is distributed process controller for Metso DNA (Valmet DNA) DCS platform. It works as an Automation Cloud Node, running independent control logic locally, managing remote I/O racks via dual fiber‑optic token‑ring bus. It collects field sensor signals and outputs control commands to actuators, meanwhile exchanging process data with main DCS supervisory host over Ethernet. Built‑in 24 VDC auxiliary power supplies nearby field I/O modules. Fiber‑optic bus delivers strong EMI‑resistance for pulp‑paper, power‑plant heavy‑EMI plant cabinet environments.

This controller solves distributed‑control challenges: decentralized local logic processing reducing main‑CPU load, noise‑immune fiber redundant bus, drop‑in spare compatibility for legacy Metso‑DNA retrofit‑maintenance projects. Process‑automation engineers, pulp‑and‑paper & power‑plant maintenance technicians and retrofit integrators benefit most. Typical applications: paper‑machine control systems, power‑plant auxiliary control loops, pulp‑processing distributed‑I/O cabinets.

Key Application Notes

‑Standalone distributed controller; cannot operate standalone; must pair with Metso‑DNA I/O modules and DCS engineering station for configuration & download ‑‑D201505 = AC mains powered variant; D201505R is 24 VDC powered version, cannot cross‑replace ‑‑Uses multi‑mode fiber for ACN token‑ring bus; single‑mode fiber not compatible ‑‑Not hot‑swap capable: unit AC power must be disconnected before replacement ‑‑OEM original production discontinued; only aftermarket surplus/refurbished spare available ‑‑Conformal‑coated PCB variant for high‑humidity / corrosive cabinet environments ‑‑Origin: Finland; follow Metso DNA ACN‑C20 official manual for bus‑station address setting and firmware download