The ABB PFXA401F (order code: 3BSE024388R3) is a high-performance digital input/output (I/O) module designed for ABB’s S800 I/O system, a modular and scalable solution for industrial automation and process control. It integrates seamlessly with ABB’s AC800M controllers and Freelance DCS systems, enabling real-time monitoring and control of digital signals in demanding industrial environments.
As a hybrid digital I/O module, it combines both input and output channels to streamline wiring and reduce system complexity. Its design emphasizes reliability, with robust isolation and diagnostic features to minimize downtime in critical applications such as manufacturing, energy, and water treatment.
Signal Handling:
- Channel Configuration: 16 digital inputs + 16 digital outputs (total 32 channels) for flexible signal management.
- Input Type: Supports DC inputs (24 VDC typical) with configurable input filters (0.1 ms to 100 ms) to suppress noise.
- Output Type: Sourcing outputs (24 VDC) with short-circuit protection and overload detection.
Performance & Reliability:
- Isolation: 2.5 kV galvanic isolation between channels and backplane to prevent ground loops and EMI interference.
- Diagnostics: Real-time channel-level diagnostics (open/short circuit, overload) with status indicators (LEDs) for quick troubleshooting.
- Environmental Resistance: Operates in -25°C to +70°C (ambient temperature) and 5%–95% non-condensing humidity, compliant with industrial standards (IEC 61131-2).
Integration & Compatibility:
- S800 I/O System: Mounts in S800 I/O racks (e.g., S800 I/O CR301/CR310) for modular expansion; supports hot-swapping for uninterrupted maintenance.
- Communication: Connects to S800 I/O bus (PROFIBUS-based) for high-speed data exchange with AC800M controllers (up to 12 Mbps).
- Redundancy: Compatible with redundant power supplies and I/O bus configurations for mission-critical systems.
Safety & Compliance:
- Certifications: CE, UL, ATEX (for hazardous areas), and IECEx compliance.
- Protection: Output channels with overcurrent protection (auto-recovery) and reverse polarity protection.
| Parameter | Description |
|---|
| Channels | 16 digital inputs + 16 digital outputs (32 total) |
| Input Voltage | 24 VDC ±20% (sinking input type) |
| Input Current | 3 mA @ 24 VDC (on-state) |
| Output Voltage | 24 VDC ±20% (sourcing output type) |
| Output Current | 0.5 A per channel (max); 4 A total per module |
| Isolation | 2.5 kV (channel to backplane); 500 V (channel to channel) |
| Response Time | Input: <1 ms (filter off); Output: <100 µs |
| Operating Temp. | -25°C to +70°C (ambient); -40°C to +85°C (storage) |
| Protection | Short-circuit, overload, reverse polarity protection |
| Dimensions | 120 mm × 110 mm × 25 mm (W × H × D) |
| Weight | ~150 g |
Industrial Automation:
- Manufacturing Lines: Controlling relays, solenoids, and actuators; monitoring limit switches or proximity sensors.
- Energy Sector: Managing switchgear, transformer cooling systems, or renewable energy (solar/wind) grid interfaces.
Process Control:
- Water/Wastewater: Controlling valves, pumps, and level sensors in treatment plants.
- Chemical/Petrochemical: Monitoring safety interlocks and emergency shutdown (ESD) signals.
Infrastructure:
- Building Automation: Integrating with BMS (Building Management Systems) for lighting, HVAC, and access control.
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