Description
Product Overview
The BACHMANN FS211 is a SIL 3-certified functional safety module engineered for mission-critical safety applications within Bachmann’s M1 automation platform. Designed for high-reliability shutdown systems in rail, energy, and industrial processes, this module executes safety logic with deterministic sub-15ms response times. The FS211 integrates dual-channel redundant processing with continuous self-diagnostics, detecting internal faults and external signal discrepancies to prevent unsafe states. Compliant with IEC 61508 and EN 50129 standards, it operates across -40°C to +70°C environments while withstanding 5g vibrations. When paired with certified I/O modules like the BS207, the BACHMANN FS211 enables safety instrumented functions (SIFs) including emergency stops, fire/gas shutdowns, and overspeed protection. Its TÜV-certified logic solvers and hardware-based voting logic ensure <10⁻⁹ probability of dangerous failure per hour – making it indispensable for protecting personnel, assets, and the environment.
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | FS211 |
| Manufacturer | BACHMANN |
| Product Type | SIL 3 Safety Logic Solver |
| Safety Standards | IEC 61508, IEC 62061, EN 50129 |
| Safety Integrity Level | SIL 3 (Hardware Fault Tolerance 1) |
| Diagnostic Coverage | >99% (per IEC 61508) |
| Processing Architecture | Dual-channel redundant (1oo2D) |
| Response Time | ≤15ms (safety function execution) |
| Backplane Interface | Ethernet POWERLINK (TMR variant) |
| Certifications | TÜV Rheinland SIL 3, EN 50155 Tx (-40°C to +70°C) |
| Fault Detection | Online RAM test, watchdog, I/O cross-check |
| Max Safety I/O Points | 256 (with expansion) |
| MTTFd | >100 years |
| Power Supply | 24V DC ±10% (dual-redundant inputs) |
| Connection | Spring-cage terminals (fail-safe design) |
| Dimensions | 35 x 126 x 117 mm (WxHxD) |
BACHMANN FS211
Main Features and Advantages
Certified Safety Architecture: The FS211 employs hardware-based 1oo2D (one-out-of-two with diagnostics) voting with diverse processors, achieving TÜV-certified SIL 3 performance without external redundancies.
Deterministic Response: Guaranteed ≤15ms safety reaction time from sensor input to final element output – critical for emergency shutdown systems in power plants or rolling stock.
Advanced Diagnostics: Continuous channel-level monitoring detects stuck relays, wire breaks, and internal FPGA errors. The FS211 generates timestamped safety logs with first-failure annunciation.
Cyber-Secure Operation: Hardware-enforced code signing prevents unauthorized logic modifications. Communication integrity checks via CRC-32 protect against data corruption.
Scalable Safety Networks: Supports up to 16 redundant FS211 modules over POWERLINK Safety (IEC 61784-3-3), enabling distributed safety systems across large facilities.
BACHMANN FS211
Application Field
The BACHMANN FS211 deploys in high-hazard environments requiring certified safety:
Railway Signaling: Implements vital interlocking logic for track switches and collision avoidance systems (EN 50129 compliance)
Process Industry: Manages emergency shutdown (ESD) for refinery furnace trains and chemical reactor overpressure protection
Power Generation: Safety logic turbine overspeed trips and boiler burner management systems (BMS)
Tunnel Safety: Controls fire damper actuation and evacuation lighting during emergencies
Mobile Machinery: Implements ISO 13849 PL e stop functions for robotic arms in automotive plants
Related Products
FS212: SIL 3 module with PROFIsafe protocol support
BS207: SIL 4-certified digital input module for safety signals
M1 CPU 052: Safety controller pairing with FS211
SIO212: Safe analog I/O module for SIL 3 loops
RBM200: Redundancy buffer for power backup
CM204: TSN-enabled communication module
PS300: EN 50155-certified power supply
Installation and Maintenance
Pre-installation preparation: Perform SIL verification calculation per IEC 61511. Isolate safety cabling (>300mm from non-safety wires). Validate redundant power feeds with independent sources.
Maintenance recommendations: Execute quarterly simulated fault injections via Bachmann Safety Suite software. Replace modules after 15 years or upon cumulative diagnostic fault count >100. Calibrate every 24 months using TÜV-certified test equipment.
Product Guarantee
BACHMANN provides a 10-year functional safety warranty for the FS211, covering SIL 3 performance when installed per specifications. Includes lifetime TÜV recertification support and 24/7 critical response with 2-hour escalation. All modules undergo 1,000-hour accelerated life testing with fault seeding.
