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Bachmann FM221 | 00012200-10 | FASTBUS Fiber Optic Master Module

Product Overview

The FM221 (00012200-10) is a high-performance FASTBUS Master module designed for the Bachmann M1 automation system. This dual-port fiber optic interface enables deterministic, real-time communication between a central processor and multiple remote I/O substations. By utilizing HCS (Hard Clad Silica) fiber technology, the FM221 (00012200-10) provides complete galvanic isolation and absolute immunity to electromagnetic interference (EMI), making it the industry standard for demanding environments such as wind power nacelles and maritime engine rooms.

Technical Specifications

  • Module Type: FASTBUS Master Communication Module

  • Interface: 2 x Independent Optical Ports

  • Data Transmission Rate: 10 Mbit/s (Deterministic)

  • Transmission Medium: HCS Fiber Optic (200/230 µm)

  • Maximum Distance: 200 meters between segments (Total network span up to several kilometers)

  • Optical Connector: V-PIN (Versatile Link) standard

  • Current Consumption: Typically 300 mA at 24 VDC

  • Topology Support: Daisy-chain, Star, and Tree structures

  • Operating Temperature: -30 °C to +60 °C

  • Dimensions: 55 x 80 x 118 mm

  • Weight: 0.30 kg

Network Topology and Connectivity

Unlike the single-port variant, the FM221 (00012200-10) features two optical channels. This allows system integrators to implement redundant line structures or branch out into complex star topologies. The use of HCS fiber over Plastic Optical Fiber (POF) ensures significantly lower signal attenuation and higher mechanical durability, which is critical for long-term stability in vibrating industrial machinery.

System Comparison: FM221 vs. FM211

  • FM221: Dual optical ports. Supports network branching and more complex distributed architectures.

  • FM211: Single optical port. Limited to simple point-to-point or end-of-line termination.

Common Applications

  • Wind Energy: Bridging data communication between the base controller and the nacelle/hub pitch systems.

  • Maritime Engineering: Secure links between the bridge control systems and engine room I/O.

  • Distributed Manufacturing: Connecting remote I/O islands in large-scale plants where electrical interference prevents the use of copper cabling.

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