Technical Specifications
- Manufacturer: ABB
- Model: RMIO-01C-Y
- Type: Compact Remote I/O Module
- Digital Inputs: 8 channels (24 VDC logic)
- Analog Inputs: 4 channels, configurable 4–20 mA or 0–10 V
- Analog Outputs: 4 channels, configurable 4–20 mA or 0–10 V
- Relay Outputs: 4 channels (dry contact, 250 VAC / 30 VDC rated)
- Communication Interface: RS-485 (supports Modbus RTU protocol)
- Power Supply: 24 VDC (±10% tolerance)
- Power Consumption: ≤5 W
- Dimensions (W×D×H): 167 mm × 100 mm × 22.5 mm
- Weight: 0.23 kg (0.51 lbs)
- Operating Temperature: -25°C to +55°C (-13°F to 131°F)
- Storage Temperature: -55°C to +85°C (-67°F to 185°F)
- Relative Humidity: 5%–95% (non-condensing)
- Shock Resistance: 15 g, 11 ms duration
- Vibration Resistance: 2 g, 10–500 Hz frequency range
- Protection Class: IP67 (dust-tight and waterproof)
- Certifications: CE, UL, CSA (industrial safety and EMC compliance)
Key Features
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Multi-Channel I/O Integration
- Combines 8 digital inputs, 4 analog inputs, 4 analog outputs, and 4 relay outputs in one compact module, reducing system complexity and wiring costs.
- Analog channels support software configuration for 4–20 mA current or 0–10 V voltage signals, adapting to diverse sensor and actuator types.
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Robust RS-485 Communication
- Equipped with an RS-485 interface supporting Modbus RTU, ensuring reliable, high-speed data exchange over long distances (up to 1,200 meters).
- Multi-drop network capability allows connecting multiple RMIO-01C-Y modules to a single controller, optimizing network architecture.
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Harsh Environment Durability
- IP67-rated enclosure provides full protection against dust, water splashes, and moisture, suitable for outdoor and industrial floor deployment.
- Wide operating temperature range (-25°C to +55°C) and resistance to shock (15 g) and vibration (2 g) ensure stable performance in extreme conditions.
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Simplified Installation & Maintenance
- Compact, lightweight design (167×100×22.5 mm, 0.23 kg) enables easy mounting on DIN rails or control panels.
- On-board LED indicators for power, communication, and I/O status allow real-time monitoring and quick fault diagnosis.
- Hot-swappable functionality supports replacement without system shutdown, minimizing maintenance downtime.
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High Reliability & Fault Protection
- Built-in overvoltage, overcurrent, and short-circuit protection safeguards the module and connected devices from electrical damage.
- Galvanic isolation between I/O channels and communication ports reduces electrical interference and enhances system safety.

Application Scenarios
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Process Industries
- Oil & Gas: Monitoring and controlling pressure, temperature, and flow sensors in pipelines, refineries, and offshore platforms.
- Chemical & Petrochemical: Integrating pH sensors, level transmitters, and control valves for reactor and distillation column automation.
- Water & Wastewater: Managing pump stations, flow meters, and level sensors for water treatment and distribution systems.
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Manufacturing & Automation
- Packaging Machinery: Connecting photoelectric sensors, encoders, and solenoid valves for automated packaging line control.
- Assembly Lines: Monitoring limit switches, proximity sensors, and motor drives for precise production line synchronization.
- Material Handling: Controlling conveyors, cranes, and hoists via digital and analog I/O integration.
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Infrastructure & Building Automation
- HVAC Systems: Regulating temperature, humidity, and airflow sensors for commercial and industrial building climate control.
- Energy Management: Monitoring power meters, energy sensors, and backup generators for facility energy optimization.
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Power & Utilities
- Power Generation: Interfacing with temperature, pressure, and vibration sensors in gas turbines, steam turbines, and generator systems.
- Renewable Energy: Controlling solar panel arrays, wind turbines, and battery storage systems for efficient power conversion and grid integration.










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