ABB

Main Functions

Multibus loop communication controller: Acts as the core interface for Bailey proprietary Multibus field loop, establishes data link between Multibus communication processors (IIMCP01 / IIMCP02) and INFI‑NET plant‑wide control highway.More products: www.plcva.com
Dual‑loop communication management: Supports two independent Multibus loop channels, manages time‑deterministic data polling, message transmission and signal conditioning for remote I/O stations and operator interface stations (OIS) on Multibus loop.
Backplane data interaction: Communicates with other rack‑based DCS boards via INFI‑90 rack backplane bus, transfers process variables, control parameters, alarm and diagnostic information between loop devices and main controllers.

ABB Bailey IIMLM01 Multibus Loop Module

On‑board diagnosis & status monitoring: LED status indicators report loop communication status, backplane link health and module fault conditions; supports on‑site fault locating for loop short‑circuit, signal attenuation and node failure.
Signal noise suppression & impedance matching: Optimizes electrical signal quality for long‑distance Multibus field wiring, reduces electromagnetic interference in heavy‑industry plant environments, ensures stable deterministic real‑time communication.
Rack‑mount hot‑swap capable: Installed in INFI‑90 standard DCS rack; supports module replacement without full‑system shutdown for critical continuous‑process production units.

ABB Bailey IIMLM01 Multibus Loop Module

Large‑scale continuous‑process DCS control system: Core communication hardware for ABB Bailey INFI‑90 / Network‑90 DCS platforms, connects remote I/O subsystems and operator workstations to the main control network.plcva.com

ABB Bailey IIMLM01 Multibus Loop Module

Power generation industry: Widely deployed in thermal power plants, used for boiler, turbine and auxiliary‑equipment monitoring & closed‑loop control.plcva.com
Petrochemical & refining plants: Realizes field‑control‑station interconnection, process‑data collection, alarm handling and regulatory control for refining and chemical production processes.
Pulp & paper, metallurgy heavy‑industry: Builds distributed control communication infrastructure for paper‑making lines, steel‑making and material‑processing production units.
Legacy‑system maintenance and retrofitting: EOL original spare module for aging INFI‑90 installations; used for breakdown replacement, on‑site renovation and system‑life extension, seldom selected for new‑project development.