FS212/N Bachmann

BACHMANN FS212/N digital output module

Brand：BACHMANN Model number：FS212/N

Country of origin: Germany Product weight：0.31kg

HS code：8517623990

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Product Details：

Product Dimensions：

The FS212/N operates as a decentralized interface node or slave module in a fiber-optic-based FASTBUS network. Its core objective is to link remote I/O substations back to a central master controller with minimal transmission latency. A distinguishing feature of the "N" variant (such as the FS211/N and FS212/N) is its integrated power supply. This onboard power stage eliminates the need for an external power brick at the remote location, as it is capable of directly feeding the backplane and the connected I/O modules of that specific distributed substation. The module contains two fiber optic (FO) interfaces, enabling versatile network topologies.

Product Parameters

Module Type: FASTBUS Slave Module
Manufacturer Item Number: 00017824-00
Number of FO Interfaces: 2 Fiber Optic ports
Input Voltage: $24 \text{ VDC}$ (Acceptable range from $18$ to $34 \text{ VDC}$ )
Current Consumption: Maximum $1.2 \text{ A}$ at $24 \text{ V}$
Nominal Power / Integrated Supply: $17 \text{ W}$ built-in power supply
Output Voltages to Backplane: Provides $+5 \text{ VDC}$ (up to $2 \text{ A}$ ), $+15 \text{ VDC}$ (up to $250 \text{ mA}$ ), and $-15 \text{ VDC}$ (up to $200 \text{ mA}$ )
Galvanic Isolation: $500 \text{ V}$ from the system
Transmission Medium and Distance: * Up to $40 \text{ m}$ using Plastic Optical Fiber (POF / PMMA) cables

Up to $150 \text{ m}$ using Hard Cladded Silica (HCS / PCF) cables
Up to $200 \text{ m}$ using specialized HCS cables

Maximum Network Capacity: Supports up to 15 distributed substations in a single ring/line layout (up to 16 total stations) with a maximum total network length of $1000 \text{ m}$ .
Status Indicators: Built-in LEDs for RUN/ERR status and fiber type display.
Operating Temperature: $0\text{°C}$ to $60\text{°C}$
Relative Humidity: 5% to 95% non-condensing
Certifications: CE, UL/cUL, CCC, and marine approvals (GL/DNV, LR, ABS, BV)

Product Advantages

One of the greatest benefits of the FS212/N is its Integrated 17W Power Supply. Because the module can generate the necessary voltages for local expansion I/O modules directly from its $24 \text{ VDC}$ field feed, it saves valuable cabinet space and lowers component procurement costs. The Ultra-Low Signal Delay inherent to Bachmann's FASTBUS technology ensures that deterministic, real-time control is maintained even when data is traveling across hundreds of meters.

Furthermore, using a Fiber Optic Medium provides absolute immunity to electromagnetic interference (EMI) and lightning strikes, making it fundamentally safer and more stable than copper-based networks in heavy industrial settings. The inclusion of Dual FO Ports also permits flexible cascading structures to chain multiple substations together efficiently.

Important Considerations and Precautions

When installing the FS212/N, paying close attention to the Fiber Optic Cable Bending Radius is essential; over-bending POF or HCS cables can cause high micro-bending losses, resulting in communication errors or a total drop in bus connection. Ensure that the Fiber End-Faces are Clean and free of dust before clicking them into the ports, as contamination can severely attenuate the optical signal.

Since this module has a built-in power supply that outputs up to $17 \text{ W}$ , total up the Current Consumption of all Connected I/O Modules on the remote substation backplane to verify they do not exceed the module's rated thresholds ( $2 \text{ A}$ at $+5 \text{ V}$ , etc.). Also, observe correct polarity when connecting the $24 \text{ VDC}$ input voltage, and confirm that the module is securely latched onto the backplane and properly grounded to prevent damage from floating potentials.

Product Applications

The Bachmann FS212/N is highly favored in complex, large-scale systems requiring fast response times over widespread geographic areas.

Wind Power Generation: Connecting control modules in the rotating nacelle to the base of the tower or linking multiple wind turbines in a farm network without EMI risk from the power generators.
Marine and Offshore Automation: Distributed control systems across large vessels or oil platforms where marine certifications and fiber optic noise immunity are required.
Factory Automation Lines: Interfacing remote I/O stations located along long assembly or packaging lines back to a centralized Bachmann controller.
Material Handling Systems: Used in massive sorting facilities, baggage systems, or crane control systems where substations must move or span across large distances.

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