Honeywell FC-IOCHAS-0002R

Product Overview

Technical & Performance Parameters

• Form Factor: Standard 19-inch 4U rackmount industrial chassis
• Total Module Slots: 21 x 4TE Eurocard slots (numbered 1–21 left to right)
• Available I/O Module Slots: Slots 1–18 (9 pairs for redundant dual-module configuration)
• Dedicated Backplane Slots: Slot 19 = IOBUS-HB2A Bus Controller; Slots 20/21 = Dual IO Backplane Interface Modules
• Backplane Bus Protocol: IOBUS-HB2 high-speed redundant parallel safety bus
• Supported Input Power: Dual redundant 24 VDC power bus (dual FC-PSU power supply module compatibility)
• Max Total Load Capacity: 500 W continuous power delivery to all installed I/O modules
• Operating Temperature: -20 °C ~ +60 °C
• Operating Humidity: 0% ~ 95% RH non-condensing
• Vibration Resistance: Compliant with ISA S71.04 Class G harsh industrial vibration standard
• Physical Dimensions: 4U height × 19-inch width × 320 mm depth
• Net Weight: 10 kg (empty chassis)
• Certifications: CE, UL 508, ATEX Zone 2, IEC 61508 SIL 3 System Compliance

Material Composition

1. Main frame: Cold-rolled steel with black anti-corrosion powder coating
2. Backplane PCB: 8-layer FR4 industrial PCB with full copper power bus layers
3. Slot guide rails: Extruded aluminum alloy with hard anodized anti-wear surface
4. Front cable cover: Flame-retardant ABS plastic with integrated swing lock mechanism
5. Internal bus connectors: Gold-plated phosphor bronze multi-pin signal contacts

Structural Characteristics

• Pair-grouped slot layout for 1:1 hot-standby redundant I/O module pairing
• Swing-up front cable cover with dual horizontal slide locking latches for rapid wiring access
• Rear-mounted flat ribbon cable connector bank for field signal wiring termination
• Integrated chassis ground bus bar for unified ESD & EMI shielding grounding
• Dual independent power distribution buses for redundant power supply failover
• Front panel LED array for chassis power, backplane bus, and slot module fault status indication

Working Principle

1. Receives stabilized 24 VDC power from dual FC-PSU power supply modules installed in cabinet rack
2. Distributes isolated power to each individual module slot via dual redundant internal power buses
3. Transmits real-time safety control signals between all installed I/O modules and central FC-QPP quad processors via the IOBUS-HB2 redundant backplane bus
4. Continuously monitors voltage, bus communication integrity, and module insertion status for all 21 slots
5. Automatically triggers bumpless failover between paired redundant I/O modules via backplane voting logic upon primary module fault detection

Core Function Features

1. Full redundant power and communication bus architecture with zero single point of failure
2. Hot-swappable module slot design; individual module replacement without chassis power shutdown
3. Integrated chassis-wide diagnostic monitoring with Experion PKS central alarm reporting
4. Supports mixed deployment of FC-IO, FC-SDO, FC-RUSIO, FC-QPP FC-series I/O modules
5. Front cover internal storage area for loop wiring schematic documentation labels

Advantage Highlights

1. Pre-certified SIL 3 system chassis architecture, eliminates third-party rack safety validation costs
2. 9 paired I/O slot layout maximizes cabinet density for large-scale ESD safety systems
3. Dual power bus support enables parallel installation of two independent power supply units for full power redundancy
4. Heavy-duty steel frame withstands severe vibration in refinery, power plant, offshore platform environments
5. Standard 19-inch rack form factor compatible with all industry standard control cabinets

Applicable Industries

Installation Requirements

1. Mount on standard 19-inch EIA industrial rack with 4 M8 mounting bolts at all four chassis corners
2. Maintain minimum 50 mm rear clearance for flat ribbon field wiring harness routing
3. Install chassis cooling fan unit for continuous operation above 45 °C ambient temperature
4. Connect chassis ground bus bar to cabinet protective earth with 6 mm² copper grounding cable
5. Restrict maximum 9 redundant I/O module pairs per single chassis to avoid power bus overload

Usage Precautions

1. Do not operate chassis with front cable cover removed during live safety loop operation
2. Avoid inserting non-FC-series foreign modules into slot positions; permanent backplane bus damage occurs
3. Perform quarterly visual inspection of backplane connectors for dust accumulation
4. Never daisy-chain multiple FC-IOCHAS chassis via backplane bus; only single-chassis bus topology supported
5. Disconnect both redundant power supplies before removing backplane interface modules from slots 20/21