Bachmann FS212/N FASTBUS Slave Module

Configured for optical fiber bus communication and distributed substation expansion in Bachmann M1 Automation System networks, the Bachmann FS212/N (FS212/N FASTBUS Slave Module) provides direct physical/electrical execution. The module interfaces upstream controllers to remote I/O nodes over dual fiber optic channels, maintaining signal integrity across isolated segments. Featuring an integrated 17 W power supply unit, the hardware regulates internal backplane power rails for attached sub-modules while routing high-speed field bus data across noise-prone industrial environments.

Hardware Specifications

Backplane Bus Communication Velocity & Network Determinism

The Bachmann FS212/N leverages backplane bus communication velocity to process optical serial streams with a propagation delay under 1.5 us. Integrating dual fiber optic ports allows ring or line topologies that expand I/O density scaling across a 1000 m total network length without electrical noise coupling. The hardware maintains firmware flash compatibility across connected nodes, ensuring real-time control cycle synchronization and immediate diagnostic relay via front-panel RUN/ERR status indicators.

Frequently Asked Questions

Q: How does the integrated power supply stage supply local backplane rails?

A: The internal DC-DC converter accepts an 18-34 VDC primary line and delivers regulated secondary outputs of +5 VDC (2800 mA), +15 VDC (250 mA), and -15 VDC (200 mA) directly to the adjacent module slots via the backplane header.

Q: What precautions are necessary regarding maximum fiber segment length?

A: Transmission limits depend strictly on the optical fiber medium used: standard Polymer Optical Fiber (POF) must not exceed 40 m, standard Hard Clad Silica (HCS) supports up to 150 m, and special HCS variants allow maximum link distances of 180 m between nodes.

Field Installation Guidelines

Mount the FS212/N vertically into the designated M1 backplane slot until the rear connector seats firmly, then torque the module retaining screws to secure mechanical grounding. Verify that incoming 24 VDC power wiring matches polarity before terminal connection; reverse polarity protection prevents circuit damage but halts power generation to the backplane.

Clean all fiber optic connectors prior to insertion into the dual FO transceivers. Maintain the minimum allowable bend radius for POF or HCS cables within cable ducts to avoid signal attenuation or optical fiber fracture. Route fiber lines away from sharp panel edges and high-voltage motor conductors.