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Produkt

Yokogawa | ALF111-S50/F9S00 FOUNDATION Fieldbus Communication Module

ALF111-S50/F9S00

The Yokogawa ALF111-S50/F9S00 FOUNDATION fieldbus communication module provides reliable H1 digital bus connectivity between Yokogawa CENTUM distributed control systems and intelligent field devices. Equipped with dual fieldbus ports, bus power supply support, and modular redundancy features, this 0.3 kg interface card ensures robust data acquisition and multi-variable instrument integration. Request current stock and pricing today for genuine Yokogawa hardware.

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Yokogawa ALF111-S50 F9S00 FOUNDATION fieldbus communication module

Advanced Fieldbus Integration for Modern DCS Architectures

In contemporary process automation facilities—such as chemical plants, oil refineries, and power generation stations—transitioning from traditional analog signals to fully digital fieldbus communication is essential for advanced diagnostics and multi-variable data collection. The Yokogawa ALF111-S50/F9S00 FOUNDATION Fieldbus Communication Module serves as a core master interface within Yokogawa CENTUM VP Field Control Stations (FCS). By connecting directly to FOUNDATION fieldbus H1 loops, the module allows control engineers to integrate transmitters, flowmeters, and actuators directly into the control function blocks.

H1 Bus Communication and Power Distribution

The ALF111-S50/F9S00 module supports standard FOUNDATION fieldbus H1 communication operating at a transmission speed of 31.25 kbps using Manchester II bi-phase encoding. The module facilitates bidirectional digital communication and supplies field bus power to connected instruments through approved power distribution components. Each module supports multiple fieldbus devices per port, enabling comprehensive device management, block transfers, and real-time alarm reporting directly within the CENTUM VP engineering environment.

Dual-Redundancy and Rugged Industrial Specifications

Designed for continuous 24/7 mission-critical operations, the ALF111-S50/F9S00 supports communication path dual-redundancy when two identical modules are paired in adjacent even and odd slots of a node unit. Front-panel LED indicators offer real-time visual diagnostics for module health, communication activity, and power status. With a net weight of approximately 0.3 kg and a low current consumption of 0.5 A, the module installs securely into standard Field Control Units and ESB bus node racks.

Applications

  • Distributed Control Systems (DCS): FOUNDATION fieldbus H1 integration within Yokogawa CENTUM VP control station architectures.

  • Oil & Gas Refineries: Digital multi-variable transmitter data collection and smart valve diagnostics on upstream and downstream units.

  • Chemical & Petrochemical Plants: Bus-powered instrument integration for complex reaction skids and hazardous area monitoring.

  • Power Generation Facilities: Centralized monitoring of digital field devices, smart actuators, and auxiliary control loops.

  • Water & Wastewater Treatment: Advanced digital telemetry and instrument management across extended plant networks.

Technical Specifications

  • Manufacturer: Yokogawa

  • Product Model: ALF111-S50/F9S00

  • Product Type: FOUNDATION Fieldbus Communication Module (H1)

  • Communication Protocol: FOUNDATION fieldbus H1

  • Transmission Speed: 31.25 kbps

  • Physical Layer Standard: IEC 61158-2

  • Number of Ports: 2 ports (H1 bus connection)

  • Dual-Redundancy: Supported (paired in adjacent even/odd slots)

  • Current Consumption: 0.5 A

  • Module Net Weight: Approx. 0.3 kg

  • Compatible Control Units: AFV30, AFV40, AFV10, AFF50, ANB10, ANB11, ANR10 series

FAQ

Q1: What is the primary function of the Yokogawa ALF111-S50/F9S00 module? A: The ALF111-S50/F9S00 is a FOUNDATION fieldbus H1 communication module that connects Yokogawa CENTUM VP control systems to digital field instruments and smart transmitters.

Q2: What is the communication transmission speed of the ALF111 module? A: In accordance with FOUNDATION fieldbus H1 standards, the module operates at a transmission speed of 31.25 kbps using IEC 61158-2 physical layers.

Q3: Can the ALF111-S50/F9S00 be configured for dual-redundant operation? A: Yes. Dual-redundant communication is supported by installing two identical ALF111 modules in adjacent even and odd-numbered slots on the same node unit.

Q4: How can I confirm pricing and lead time for this part? A: Simply submit your required model code and quantity through our website inquiry form to receive a prompt quotation.

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