Yokogawa ALF111-S01 Communication Module

Feature & Principle

It is a dedicated FF-H1 fieldbus communication interface module for Yokogawa CENTUM CS3000 DCS. It acts as the gateway between the FCS controller and Foundation Fieldbus field devices. It realizes periodic control data exchange and acyclic parameter reading/writing between the system and FF transmitters, valves and other smart instruments. It supports dual redundant hot backup configuration, automatically switches to standby module upon failure to ensure continuous bus communication.

Specifications

Model: ALF111-S01 Brand: Yokogawa Communication protocol: Foundation Fieldbus FF-H1 Number of segments: 4 segments per module Compatible system: CENTUM CS3000 Power supply: Backplane power supply Redundancy: Support dual redundant configuration Mounting: DCS rack mounting Protection class: IP20 Certification: CE, IEC

Components & Diagnostics

Fieldbus communication chip, bus signal transceiver circuit, backplane interface, status LED indicator, metal housing, terminal base. Common faults: bus communication interruption, segment failure alarm, redundancy switching abnormal, module offline.

Product Brief

Yokogawa ALF111-S01 FF-H1 communication module, industrial DCS spare widely used for petrochemical CS3000 fieldbus control system overhaul and replacement.