Yokogawa F3LR02-0N Fiber Optic Interface Module

Configured for long-range, high-speed networking in FA-M3 control platforms, the Yokogawa F3LR02-0N (F3LR02-0N Fiber Optic Interface Module) provides direct physical/electrical execution of 10 Mbps optical data transmission, station-to-station synchronization, and noise-immune fieldbus communication.

Hardware Specifications

Yokogawa FA-M3 Network Characteristics

• Backplane bus communication velocity: The module interfaces directly with the FA-M3 backplane to bridge controller memory states to the fiber optic network. The high-speed interface is necessary to maintain deterministic data refresh rates across the distributed daisy-chain architecture.
• Profinet / EtherNet/IP deterministic networks: While the module utilizes a specialized 10 Mbps optical protocol, it serves as the foundation for deterministic inter-controller communication. This ensures that synchronization signals across the 32 stations remain consistent, preventing jitter in time-critical machine control sequences.
• I/O density scaling: The module architecture supports network expansion up to 32 stations. As the system scales, the module maintains scan cycle integrity by managing data packet arbitration and transmission timing without increasing the processing overhead on the host CPU.
• Firmware flash compatibility: The hardware includes localized interface logic that supports stable frame handling under high load, ensuring that network communication remains resilient against packet loss or timing skews within the fiber loop.

Frequently Asked Questions

Q: Does the daisy-chain configuration allow for redundant paths?

A: The F3LR02-0N is designed for standard daisy-chain topology. If high availability is required, a secondary redundant fiber loop must be implemented using independent modules and dedicated controller software to manage the primary/secondary switchover logic.

Q: Is the module sensitive to fiber bend radius?

A: Yes. Fiber optic signal attenuation is highly dependent on cable routing. Ensure that the fiber is installed with a bend radius compliant with the manufacturer's specification for the specific cable type used, as excessive bending will increase link loss and trigger communication errors.

Field Installation Guidelines

• Mounting: Seat the module into the FA-M3 rack. Secure the module using the built-in locking mechanism to guarantee the electrical continuity of the backplane bus, which is mandatory for reliable communication between the module and the controller.
• Grounding: Ensure the FA-M3 rack is bonded to the common system earth bus. A stable ground reference is mandatory to protect the module's transceiver circuitry from static discharge and transient surges during fiber termination or handling.
• Wiring: Terminate fiber optic cables using high-precision connectors and ensure the ferrule faces are cleaned using a lint-free wipe before insertion. Maintain a minimum separation of 150 mm from high-power AC lines to prevent induced heating near the fiber routing, which is mandatory to maintain the integrity of the optical signal path.