FC-IOCHAS-0002S | hardened safety I/O chassis

​Parameter ​Specification
​Product Model FC-IOCHAS-0002S
​Manufacturer Honeywell
​Type Safety I/O Chassis
​Redundancy Level Dual-redundant (1oo2D architecture)
​Safety Certification IEC 61508 SIL 3, TÜV AK6/7
​Backplane Slots 12 slots (FSC-compatible I/O modules)
​Communication Honeywell FDM (Fail-Safe Data Module)
​Max I/O Points 384 (32 points/module × 12 slots)
​Power Supply Dual 24VDC ±10% (N+1 redundant)
​MTBF >150 years (IEC 61508 calculation)
​Hazardous Certification ATEX/IECEx Ex nA IIC T4 Gc, Zone 2
​Operating Temperature -40°C to +70°C
​Humidity Range 5–95% non-condensing
​Dimensions 439 × 220 × 190 mm (H×W×D)
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Description

Product Overview
The ​HONEYWELL FC-IOCHAS-0002S is a hardened safety I/O chassis for Honeywell’s Safety Manager FSC (Fail-Safe Control) platform, engineered for SIL 3-certified critical applications in hazardous environments. This dual-redundant base unit provides deterministic signal conditioning and voting logic for safety instrumented systems (SIS), integrating seamlessly with Honeywell Experion® PKS for unified process control and safety. The ​HONEYWELL FC-IOCHAS-0002S features TÜV-certified fault masking (HFT=1) with <50ms response time for emergency shutdown (ESD) scenarios. Its modular design allows hot-swapping of FSC I/O cards while maintaining process availability in oil/gas, chemical, and power generation facilities. Conformal-coated circuitry withstands corrosive atmospheres, while ATEX/IECEx Zone 2 certification enables deployment without external purging.

Technical Specifications

​Parameter ​Specification
​Product Model FC-IOCHAS-0002S
​Manufacturer Honeywell
​Type Safety I/O Chassis
​Redundancy Level Dual-redundant (1oo2D architecture)
​Safety Certification IEC 61508 SIL 3, TÜV AK6/7
​Backplane Slots 12 slots (FSC-compatible I/O modules)
​Communication Honeywell FDM (Fail-Safe Data Module)
​Max I/O Points 384 (32 points/module × 12 slots)
​Power Supply Dual 24VDC ±10% (N+1 redundant)
​MTBF >150 years (IEC 61508 calculation)
​Hazardous Certification ATEX/IECEx Ex nA IIC T4 Gc, Zone 2
​Operating Temperature -40°C to +70°C
​Humidity Range 5–95% non-condensing
​Dimensions 439 × 220 × 190 mm (H×W×D)

Key Features & Advantages

Fault-Tolerant Operation:
Dual-independent safety buses with CRC-32 error checking ensure 99.99% diagnostic coverage. Automatic channel switching isolates faults within one scan cycle (<100 ms).

Cybersecurity Hardening:

  • Hardware-enforced firmware signature verification (ECDSA-384)
  • Role-based access control (RBAC) with TÜV-certified separation
  • Audit trails compliant with ISA/IEC 62443-3-3

Advanced Diagnostics:
Per-channel health monitoring detects:

  • Wire breaks/shorts (<10 ms)
  • Sensor drift via trend analytics
  • Cross-talk between signals

Deployment Flexibility:
Hot-swappable modules reduce MTTR to <5 minutes. DIN rail or 19″ rack mounting. Integrated short-circuit protection (UL 508A).

Application Areas

  • ​Refinery Safety Loops: HIPPS (High-Integrity Pressure Protection) valve control
  • ​Offshore Platforms: Subsea ESD systems with SIL 3 fire/gas detection
  • ​Chemical Reactors: Exothermic reaction quenching systems
  • ​Power Generation: Turbine overspeed protection & burner management
  • ​Pharmaceuticals: Batch reactor pressure relief SIL 2/3 sequences
  • ​LNG Trains: Cryogenic pump shutdowns for -162°C service

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