Product Short Description
Product Introduction
Description
Technical Specifications
| Category | Details |
|---|---|
| Communication Interface | 1 × RS-485 (MODBUS RTU); Baud rate: 1200–187500 bps (auto-detection); Half-duplex; Opto-isolated |
| I/O Configuration | 8 × Analog Inputs (AI); 6 × Digital Outputs (DO); Supports expansion via AC 31 40/50 series modules |
| Power Supply | Internal: 120/230 V AC (selectable); External: 24 V DC (optional); Internal 24 V DC for inputs |
| Operating Conditions | Temperature: 0 °C to +55 °C (horizontal); 0 °C to +40 °C (vertical); Humidity: ≤95% (non-condensing); Altitude: ≤2000 m |
| Storage/Transport | Temperature: -40 °C to +75 °C |
| Protection & Standards | Protection Class: IP20; Compliance: EN 61131-2, IEC 61000-4 series (EMC) |
| Mechanical | Mounting: 35 mm DIN rail; Weight: ~0.22 kg; Dimensions: 145 × 145 × 75 mm (typical) |
| Diagnostics | Onboard LEDs (POWER/RUN/ERR); MODBUS-based fault reporting (bus errors, overloads, short circuits) |
Functional Features
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Distributed I/O Architecture
Operates as a MODBUS RTU slave on the RS-485 bus, enabling decentralized signal processing over long distances (up to 1200 m at 1200 bps, 500 m at 187500 bps). Simplifies wiring and reduces cabinet space in large systems.
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Flexible I/O Handling
Integrates high-precision analog inputs (for temperature, pressure, flow) and robust digital outputs (for relays/transistors). Supports expansion to reach 200 I/Os via binary/analog extension modules.
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Auto-Baud Detection
Automatically identifies MODBUS master baud rates (1200–187500 bps), eliminating manual configuration and ensuring seamless integration with diverse controllers.
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Comprehensive Diagnostics
Real-time status via LEDs and MODBUS registers. Detects bus errors, disconnected extensions, output overloads, and short circuits, aiding rapid troubleshooting.
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Rugged Reliability
Built for harsh industrial environments with EMC immunity (ESD, radiated fields, fast transients) and wide temperature/humidity tolerance. Features watchdog circuits for stable operation.
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Easy Addressing & Configuration
Front-panel rotary switches set MODBUS slave addresses (1–79; 0/80 reserved). Configurable via MODBUS commands for I/O mapping, filtering, and scaling.
Application Scenarios
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Process Automation
Data acquisition and control in manufacturing lines (chemical, food & beverage, pharmaceuticals) for monitoring pressure, temperature, and flow; actuation of valves, pumps, and conveyors.
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Energy & Power Systems
Monitoring and control in power plants, substations, and renewable energy installations (wind/solar) for grid stability, equipment protection, and remote asset management.
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Building Automation
HVAC control, lighting management, and security systems in commercial buildings, ensuring efficient resource utilization and centralized monitoring.
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Transportation & Infrastructure
Railway signaling, tunnel environmental control, and water/wastewater treatment plants for reliable, long-distance signal transmission and control.
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Oil & Gas
Offshore platforms, refineries, and pipelines withstanding extreme temperatures, humidity, and electromagnetic interference for safe and continuous operation.
Key Advantages
- Scalability: Expand I/O count from 14 to 200 using standard AC 31 extension modules.
- Interoperability: Compatible with all MODBUS RTU masters via auto-baud detection.
- Reliability: IP20 rating, EMC compliance, and diagnostic features ensure minimal downtime.
- Cost-Efficiency: Reduces wiring and installation costs through distributed architecture.
- Ease of Use: Plug-and-play installation with intuitive addressing and configuration.
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