ALF111-S50 Communication Module | Yokogawa Fieldbus

Yokogawa ALF111-S50 FOUNDATION Fieldbus Communication Module

The Yokogawa ALF111-S50 delivers reliable FOUNDATION Fieldbus communication for industrial automation networks. This standard type module features four independent fieldbus ports with 31.25 kbps transmission speed. It supports up to 32 field devices per segment with advanced LAS and clock master functionality.

Technical Specifications

• Brand: Yokogawa
• Model: ALF111-S50
• Interface: FOUNDATION Fieldbus low speed
• Number of Ports: 4 independent ports
• Transmission Speed: 31.25 kbps
• Segments: 1 segment per port
• Withstanding Voltage: 1500 V AC/minute
• Current Consumption: 0.5 A maximum

Key Features

• FOUNDATION Fieldbus compliant
• Four communication ports
• LAS function capability
• Clock master function
• Dual-redundancy support
• Standard type design

Communication Performance

• Transmission Speed: 31.25 kbps
• Maximum Devices: 32 units per segment
• Control I/O: 48 points maximum per segment
• High-speed Scanning: 6 points maximum
• Segment Control: 1 segment per port
• Redundancy: Dual-unit configuration

Connection & Installation

• Bus Connection: Pressure clamp terminals
• Terminator: Built-in switchable type
• Dedicated cable to terminal board
• Mounting: ANB10, ANB11, AFV30 compatible
• Backplanes: AFV40, A2FV50, A2FV70
• Weight: 0.40 kg compact design

Electrical Specifications

• Withstanding Voltage: 1500 V AC for 1 minute
• Isolation: Primary to secondary side
• Channel Isolation: Between all channels
• Current Draw: 0.5 A or less
• Voltage Mode: Low speed operation
• Power Requirements: Standard DC supply

Package Contents

• Yokogawa ALF111-S50 module
• Factory original packaging
• Installation documentation
• Technical specifications sheet

Frequently Asked Questions

• How many ports available? Four independent fieldbus ports
• What is the transmission speed? 31.25 kbps fieldbus standard
• How many devices per segment? Maximum 32 field devices
• What redundancy features? Dual-unit redundancy support
• What connection method? Pressure clamp terminals with terminators

Contact us for fieldbus network design and integration support:

Email: sales@nex-auto.com
Phone: +86 153 9242 9628