Description
Technical & Performance Parameters
- Input Power Range: 9 VDC ~ 36 VDC isolated field power
- Max Power Consumption: 15 W
- Output Signal Types (Configurable): 4–20 mA, 0–20 mA constant current source
- Output Accuracy: ±0.05% full scale
- Output Isolation Voltage: 2500 VAC channel-to-backplane isolation
- Response Latency: ≤ 1 ms signal conversion delay
- Communication Bus: RS485 Modbus RTU, FC-Series backplane IOBUS-HB2
- Channel Count: 16 digital input channels + 16 analog output channels
- Operating Temperature: -40 °C ~ +70 °C
- Storage Temperature: -45 °C ~ +85 °C
- Operating Humidity: 0% ~ 95% RH non-condensing
- Physical Dimensions: 133.4 mm (H) × 20.3 mm (W) × 280 mm (D)
- Net Weight: 0.61 kg
- Certifications: CE, UL 508, IEC 61508 SIL 2 Certified
Material Composition
- Outer housing: High-strength flame-retardant ABS plastic (UL94-V0)
- Circuit substrate: 6-layer industrial FR4 PCB with full conformal silicone coating
- Terminal connectors: Gold-plated copper spring terminal blocks
- Backplane edge connector: Phosphor bronze gold-plated contact pins
- Internal passive components: Industrial-grade tantalum capacitors, metal-film resistors
Structural Characteristics
- Horizontal hot-swappable plug-in design for FC-IOCHAS series 19-inch I/O chassis
- Front panel with LED status indicators: Power, Fault, Channel Active, Bus Communication
- Lockable front terminal cover to prevent accidental wiring disconnection
- Integrated anti-vibration mounting clips for rack vibration resistance
- Standard 4TE Eurocard width form factor
Working Principle
- Receives digital setpoint commands via the chassis internal IOBUS backplane from FC-QPP safety quad processors
- On-board 24-bit DAC converts digital values to precise analog current signals
- Galvanic isolation circuit separates field valve wiring from SIS control backplane to suppress EMI interference
- Real-time channel fault diagnostics continuously monitor open/short circuit valve wiring and report faults to the central safety controller via bus feedback
Core Function Features
- Independent per-channel signal range configuration without chassis power shutdown
- Built-in open-circuit and short-circuit fault self-diagnosis with front-panel LED alarm
- Isolated analog output eliminates ground loop signal distortion in multi-valve cabinet layouts
- Hot-swap compatible; module replacement does not interrupt other chassis I/O channel operation
- Digital signal filtering algorithm suppresses industrial electromagnetic noise from motors, VFDs
Advantage Highlights
- Integrates valve signal drive and fault detection into single module, reducing cabinet hardware count by 40%
- SIL 2 safety certification for emergency shutdown valve control loops
- Ultra-wide operating temperature range supports unheated outdoor industrial cabinet installation
- Conformal coated PCB prevents corrosion in high-humidity, chemical vapor environments
- Modbus RTU secondary communication port for third-party HMI signal readback
Applicable Industries
Petrochemical refining, natural gas processing, thermal power generation, offshore oil platforms, chemical batch manufacturing, pharmaceutical safety control, water treatment emergency shutdown systems
Installation Requirements
- Install exclusively within Honeywell FC-IOCHAS-0002R 19-inch redundant I/O chassis slots 1–18
- Horizontal rack mounting only; vertical installation prohibited to maintain thermal convection cooling
- Minimum 15 mm vertical clearance between adjacent modules for heat dissipation
- Chassis ambient airflow rate ≥ 0.3 m/s to avoid overheating at maximum load
- Wiring must use shielded twisted-pair cable with shield single-point grounded at chassis terminal bar
Usage Precautions
- Do not apply AC voltage directly to analog output terminals; permanent circuit damage occurs
- Replace module only during system maintenance lockout; hot-swap is permitted but safety loop bypass procedures required
- Avoid mechanical impact to front terminal blocks; gold-plated contacts degrade under heavy shock
- Store spare modules in low-humidity anti-static packaging to prevent PCB trace oxidation
- Annual calibration of output current accuracy required per IEC 61508 SIS maintenance standards



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