The FC-IOCHAS-0003R is a redundant I/O module chassis (version 1.0) for Honeywell's Safety Manager/Experion system. It is used to install, power, and interconnect redundant I/O modules, serving as the core mechanical and electrical foundation for high-reliability DCS/safety systems.

I. Basic Information and Positioning

Model: FC-IOCHAS-0003R (V1.0)

Full Name: Chassis For Redundant I/O Module

Manufacturer: Honeywell

Applicable Systems: Experion PKS, Safety Manager (SM), replacing the older FC-IOCHAS-0001R

Version: V1.0 (Hardware Revision)

Coating: CC (Conformal Coated), suitable for harsh industrial environments

II. Core Specifications and Parameters

Mechanical and Installation

Structure: Industrial-grade metal chassis, vibration-resistant and electromagnetic interference-proof

Slots: Supports 1 pair of redundant I/O modules (dual module hot standby)

Installation: Standard rack rail/panel mounting, compatible with 19-inch standard racks

Electrical and Power Supply

Backplane Power:

5 VDC: Maximum 1.28 A (for module core)

24 VDC: Maximum 9.08 A (for I/O) (With peripherals)

Redundancy Features: Backplane supports hot-swapping and seamless switching; single module failure does not interrupt the system.

Environment and Reliability

Operating Temperature: −20 °C ~ +55 °C (Industrial wide temperature range)

Relative Humidity: 5%–95% RH (Non-condensing)

Protection Rating: IP20 (Touchproof, suitable for control cabinets)

Certifications: SIL 3 (Safety Integrity Level), CE, UL, CSA

III. Part Number Analysis

FC: Product Line (Safety Manager/Experion)

IOCHAS: I/O Chassis

0003: Third-generation redundant chassis (replaces 0001)

R: Redundant (Redundant; S = Non-redundant)

V1.0: Hardware Version 1.0

IV. Typical Applications and Compatible Modules

Application Scenarios

Petrochemical, oil and gas extraction, power energy, etc. **Critical Control and Safety Interlock (SIS) Systems**

**Continuous process industries requiring zero downtime, such as large compressors and turbine control**

Compatible I/O Modules (Examples)

Analog Inputs: FC-AI-1620, FC-AI-0820

Analog Outputs: FC-AO-0820

Digital Inputs: FC-DI-3220

Digital Outputs: FC-DO-3220

V. Differences from the Older Model (FC-IOCHAS-0001R)

Hardware Upgrades: Enhanced backplane circuitry, improved anti-interference and heat dissipation capabilities

Power Increase: Approximately 30% increase in 5VDC current capability, supporting next-generation high-density I/O modules

Compatibility: Mechanically and electrically compatible with the older module, can be directly replaced and upgraded

VI. Procurement and Selection Considerations

System Matching: Only for Honeywell Experion/Safety Manager, not for other brands of PLC/DCS

Redundancy Configuration: Must be installed in pairs with the same redundant I/O modules, cannot be used as a single module

Environmental Adaptability: CC three-proof coating version is preferred for high humidity/dust/corrosive environments

Version Confirmation: V1.0 is an early stable version; for new projects, please consult for updated hardware versions.

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