Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | FAU810 |
| Manufacturer | ABB |
| Product Category | Safety Analog Input Module |
| Channels | 8 (Dual-channel redundant inputs) |
| Input Type | 4-20mA / HART |
| Accuracy | ±0.05% FS @ 25°C |
| Isolation | 1500V AC channel-to-channel & backplane |
| SIL Certification | SIL 3 (IEC 61508) |
| HART Support | Full HART 7 protocol pass-through |
| Update Rate | 50 ms per channel |
| Operating Temperature | -40°C to +70°C |
| Power Consumption | 1.8 W (typical) |
| Connection Interface | Front removable terminal block |
| Diagnostics | Open wire, short-circuit, over-range |
ABB FAU810
Product Introduction
The ABB FAU810 is a fault-tolerant analog input module engineered for safety-critical process applications within ABB’s S800 I/O High Integrity series. Designed for integration with ABB’s 800xA and AC 800M safety controllers, this SIL 3-certified module provides redundant 4-20mA/HART signal acquisition for temperature, pressure, and flow transmitters in hazardous environments. The FAU810 implements hardware-based safety mechanisms including dual A/D converters with voting logic, enabling continuous process monitoring while meeting IEC 61508 safety requirements.
As the cornerstone of safety instrumented systems (SIS), the ABB FAU810 features patented signal validation algorithms that detect drift, stuck-at faults, and common-cause failures within milliseconds. Its integrated HART multiplexer allows digital communication with smart field devices without additional hardware. The module’s robust design ensures fail-safe operation in oil/gas, chemical, and power generation applications where undetected signal failure could lead to catastrophic consequences.
Core Advantages and Technical Highlights
Functional Safety Excellence:
Dual-channel redundancy with <100ns synchronization tolerance enables SIL 3 compliance without external voting. Each channel features independent signal conditioning and 24-bit Σ-Δ converters with cyclic cross-comparison, achieving hardware fault tolerance (HFT=1).
Advanced Diagnostics:
Real-time HART data extraction (PV/SV) coexists with 4-20mA measurement. Continuous line resistance monitoring detects 0.1Ω cable degradation. On-board FRAM stores last-known valid values during faults.
Cyber-Secure Architecture:
Hardware-enforced firmware signature verification prevents unauthorized code execution. Secure boot process with TPM 2.0 cryptographic module meets IEC 62443-3-3 requirements.
Operational Resilience:
Operates continuously during ±30% supply voltage fluctuations. 50g shock resistance (11ms duration) ensures reliability in seismic zones. Conformal coating withstands corrosive atmospheres (ISO 12944 C4).
Typical Application Scenarios
In offshore platforms, the ABB FAU810 monitors subsea safety valve positioners, using HART diagnostics to predict seal failures before leaks occur. Its SIL 3 certification ensures compliance with IEC 61511 safety lifecycle requirements for hydrocarbon processing.
Chemical reactors utilize the module’s redundant channels for exothermic reaction temperature monitoring, where dual-input validation prevents false trips costing >$500k/hour. The -40°C cold-start capability maintains functionality in cryogenic storage facilities. For turbine overspeed protection, FAU810 modules acquire bearing vibration signals with 50ms update rates, triggering ESD within 200ms of threshold violation.
Related Model Recommendations
TB820 Base Unit: Mandatory carrier for FAU810
FDO810 Safety Analog Output: Complementary control module
SAI23 Standard Analog Input: Non-safety alternative
PM866 Safety Controller: SIL 3 processor for S800 I/O
SD822 Power Supply: 24V DC source for S800 racks
TA527 Redundancy Kit: Module-level hot standby
HART-2-ETH Gateway: Converts HART data to Ethernet
ABB FAU810
Installation, Commissioning and Maintenance Instructions
Installation Preparation:
Verify TB820 base unit installation (DIN rail TS35). Use shielded twisted-pair cables with 360° grounding. Maintain 50mm clearance from high-voltage components. Apply 10-15 N·m torque to terminal blocks. Perform dielectric test (500V DC) between channels before power-up.
Maintenance Recommendations:
Quarterly: Verify calibration via Control Builder M (tolerance ±0.1%)
Biannually: Inspect terminal corrosion; clean with electronic contact cleaner
Annually: Execute diagnostic test mode to validate fault detection
Critical: Replace after 15 years or 100,000 power cycles
Always use ABB-certified replacement parts for SIL-rated systems
Service and Guarantee Commitment
ABB provides a 60-month warranty for FAU810, covering safety function integrity. SIL compliance assurance includes:
TÜV-certified FMEDA reports
24/7 critical failure response (<4h remote / <48h onsite)
Lifetime product support until 2040
Cybersecurity patches through ABB Automation Sentinel
Free access to Safety Manual (3BSE050346)
All modules undergo:
100% SIL verification testing
168h burn-in at 85°C
HART conformance validation
50g shock/5g vibration testing
Extended service plans include periodic SIL recertification and predictive maintenance analytics.
