F3LR02-0N | Yokogawa Fiber-Optic FA-bus Type 2 Module

Product Overview

The Yokogawa F3LR02-0N is a Fiber-Optic FA-bus Type 2 Module designed for high-speed, noise-immune communication in industrial automation systems. Using 2-core H-PCF fiber-optic cable at 10 Mbps, it enables distributed I/O and multi-station FA-M3 systems with a maximum total distance of 1.4 km and up to 56 substations. Star, daisy-chain, and loop configurations are supported with automatic loop switching for fault tolerance.

Key Specifications

• Transmission Speed: 10 Mbps
• Transmission Media: 2-core fiber-optic cable (H-PCF hard plastic clad quartz fiber)
• Max Total Distance: 1.4 km
• Max Distance Between Units: 500 m
• Max Substations: 56 (32 if using F3BU04 base modules)
• Configuration: Star, daisy-chain, or loop
• Signal Encoding: Manchester encoding
• Access Method: Direct I/O access
• I/O Ports: 2 ports
• RAS Features: Shutdown output on channel error, error reporting, loop switching
• Compatible CPUs: F3SP21/25/35/05/08/22/28/38/53/56/59/66/67/71/76, F3BP00

Compatibility & Applications

Compatible with FA-M3 base modules F3BU04/05/06 (with slot number setup support) and all listed CPU modules. Essential for large distributed systems, electromagnetic interference environments, long-distance I/O networking, and high-reliability applications such as steel mills, power plants, and chemical facilities.

FAQ

• Q: What type of fiber-optic cable is required? A: 2-core H-PCF (hard plastic clad quartz fiber-optic) cable. KF-07 or CF-2071/CF-2071H series are recommended.
• Q: What is the minimum bending radius? A: 15 mm during installation (temporary), 50 mm when secured for fiber-optic cords; 100 mm when secured for fiber-optic cables.
• Q: Does it support loop redundancy? A: Yes, the module supports loop configuration with automatic loop switching for fault-tolerant operation.
• Q: Can I mix F3LR02-0N with copper FA-bus modules? A: FA-bus Type 2 is fiber-optic specific; plan your network topology accordingly.

Installation Guide

1. Power off all FA-M3 stations before installation.
2. Install F3LR02-0N in the designated communication slot or I/O slot.
3. Set station address switches according to your network plan.
4. Connect fiber-optic cables observing minimum bending radius (50 mm secured).
5. Restore power and verify communication status LEDs.
6. Use WideField3 to monitor transmission channel health and error locations.

Selection Tips

• Use F3LR02-0N for long-distance, noise-immune communication between FA-M3 stations.
• For shorter distances or cost-sensitive applications, consider copper-based FA-bus modules.
• Ensure all substations use compatible CPU revisions (Rev. 8 or later for some models).
• Maintain proper fiber-optic cable management to prevent sharp bends that attenuate signals.