
Product Description ABB ACU-01B 3HNA024871-001
ABB ACU-01B 3HNA024871-001 is a compact controller from ABB’s range of industrial automation components, designed for controlling and monitoring low-energy devices and small-scale systems. This ACU-01B 3HNA024871-001 controller combines ease of operation with extended communication capabilities, making it ideal for integration into local automated networks where precise control and real-time data transmission are required. ABB ACU-01B 3HNA024871-001 embodies ABB’s quality standards, ensuring stable performance in harsh industrial environments and compatibility with a wide range of sensors and actuators.
ABB ACU-01B 3HNA024871-001 is equipped with a high-performance microprocessor and supports major industrial protocols, enabling efficient interaction with PLCs and SCADA systems. For example, in industrial climate control systems, ACU-01B 3HNA024871-001 manages fans and valves to regulate temperature and humidity, while status data is transmitted to the central controller via Modbus. In residential and commercial complexes, ABB ACU-01B 3HNA024871-001 monitors energy consumption systems, collecting electricity usage data and optimizing efficiency. ABB ACU-01B 3HNA024871-001 is easily configurable via dedicated software, reducing deployment time in existing setups. [Link to product ABB ACU-01B 3HNA024871-001]
Technical Parameters ABB ACU-01B 3HNA024871-001
- Device Type: Compact industrial controller by ABB for low-energy systems
- Processor: 32-bit microcontroller with 80 MHz clock speed
- Memory:
- Flash: 256 kB (for program storage)
- RAM: 64 kB (for data)
- Inputs/Outputs:
- 8 analog inputs (0–10 V, 4–20 mA)
- 16 digital inputs (24 V DC)
- 8 digital outputs (relay, 250 V AC, 5 A)
- Communication Protocols: Modbus RTU (RS-485), Ethernet (optional via module)
- Power Supply: 24 V DC (range 18–30 V)
- Power Consumption: ≤5 W
- Temperature Range:
- Operating: -20 °C to +60 °C
- Storage: -40 °C to +85 °C
- Enclosure: Plastic with metal mounting brackets, IP20 protection rating
- Certifications: CE, UL, RoHS
- Weight: ≈280 g
- Dimensions: 100 × 70 × 30 mm (width × height × depth)
Advantages and Features ABB ACU-01B 3HNA024871-001
ABB ACU-01B 3HNA024871-001 stands out for its compact design, versatility, and easy integration:
- Flexible I/O configuration: 8 analog and 16 digital inputs, plus 8 relay outputs, allow connection of diverse sensors and actuators.
- Modbus RTU support: Simplifies integration with existing automation systems, including PLCs and operator panels.
- Wide temperature range: Operates reliably from -20 °C to +60 °C, critical for use in harsh environments.
- Low power consumption: ≤5 W makes it suitable for standalone systems with limited power sources.
Application Fields
- Commercial Buildings: Climate control and energy management systems
- Light Industry: Monitoring of auxiliary processes (ventilation, lighting)
- Residential Complexes: Control of water supply and heating systems in multi-story buildings
- Agricultural Industry: Temperature and humidity control in greenhouses and food storage facilities
Comparison with Competitors (including ABB ACU-02C)
| Parameter | ABB ACU-01B 3HNA024871-001 | ABB ACU-02C | Competitor Controller |
|---|---|---|---|
| Analog Inputs | 8 | 12 | 6 |
| Digital Inputs | 16 | 24 | 12 |
| Outputs | 8 (relay) | 12 (relay + transistor) | 6 (relay) |
| Ethernet Support | Optional | Standard | None |
| Weight | 280 g | 350 g | 300 g |
Selection Tips and Precautions
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Selection: ABB ACU-01B 3HNA024871-001 is ideal for small systems with limited I/O requirements and basic communication protocols. For more complex applications with Ethernet and additional I/O, choose ABB ACU-02C.
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Installation:
- Mount on DIN rails for secure attachment and easy maintenance.
- Use shielded cables for Modbus RTU communication to minimize electromagnetic interference.
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Maintenance:
- Inspect connections quarterly—loose contacts can cause data loss.
- Update firmware via official ABB software annually to enhance stability and add new features.
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Safety:
- Ensure power supply stays within 18–30 V DC—voltage fluctuations may damage the controller.
- Avoid exposure to moisture and dust—while IP20-rated, harsh conditions reduce service life.
ABB ACU-01B 3HNA024871-001 is a compact, reliable controller that combines ABB’s quality with user-friendly operation, making it an excellent choice for small to medium-sized automated systems.


