The FM221 (Part Number: 00012200-10) is a dual-port FASTBUS Master fiber optic communication module for the Bachmann M1 system. It enables a single processor to manage multiple remote substations over long distances, providing full galvanic isolation and immunity to EMI.
With two independent optical ports, the FM221 supports daisy-chain or star network topologies, ensuring real-time data synchronization across distributed automation systems.
| Parameter | Specification |
|---|---|
| Module Function | FASTBUS Master Communication |
| Interface Ports | 2 x Optical Fiber |
| Transmission Medium | HCS Fiber (200/230 µm) |
| Max Distance | 200 m per segment (network reach up to several km) |
| Data Transfer Rate | 10 Mbit/s deterministic |
| Optical Connection | V-PIN or Versatile Link |
| Current Consumption | ~300 mA @ 24 VDC |
| Dimensions | 55 × 80 × 118 mm |
| Weight | 0.3 kg |
| Operating Temperature | −30 °C to +60 °C |
Used in wind turbines (base-to-nacelle communication), maritime bridge-to-engine links, and large industrial plants with widely distributed I/O substations.
What is the difference between FM221 and FM211?
FM221 has two optical ports for flexible network branching, while FM211 has a single FASTBUS link.
Can I use standard POF?
No. FM221 is optimized for HCS fiber. POF is limited for industrial distances and may degrade signal quality.
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