ABB FI810F Communication Modules

The ABB FI 810F, also cataloged as the FI 810F Communication Module, operates as a dedicated hardware component for triple-channel CAN fieldbus interface execution within ABB Freelance rack-based I/O platforms.

Hardware Specifications

Backplane Bus Communication Velocity and Deterministic CAN Networks

The FI 810F module integrates directly into the Freelance subrack to handle multi-channel CAN bus traffic. Offloading low-level frame validation, bus arbitration, and timing tasks from the central processor (PM 802F / PM 803F) helps maintain backplane bus communication velocity across high-density I/O racks.

The three onboard CAN channels feature opto-isolated physical layers to suppress cross-talk and prevent ground potential loops between field devices and the internal logic bus. Correct firmware flash compatibility across all subrack communication interfaces ensures deterministic message routing without packet latency under peak network loads.

Frequently Asked Questions

Q: Can the FI 810F module be installed or removed while the rack power supply is energized?

A: Live insertion and extraction (hot-swapping) must follow Freelance rack guidelines. To prevent bus communication disruption or logic resets on the CPU, turn off power to the rack or isolate the communication bus before removing the module.

Q: What is required if a CAN channel on the FI 810F experiences signal reflection or CRC bus errors?

A: Verify that external 120-ohm termination resistors are installed at both physical ends of the CAN segment, and check that cable shielding is tied to a single protective earth point.

Field Installation Guidelines

1. Disconnect main power to the subrack before inserting or extracting the FI 810F module to avoid logic transients on the backplane.
2. Verify that the subrack chassis frame connects directly to protective earth (PE) using a low-impedance copper strap.
3. Align the module circuit board with the subrack card guide rails and slide it in until the rear multi-pin connector seats into the backplane. Tighten top and bottom retaining screws.
4. Route CAN fieldbus cables separately from high-voltage AC lines and motor drives to prevent noise coupling.
5. Ground signal cable shields at a single cabinet entrance terminal to prevent ground loops from interfering with CAN transceiver signals.