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- 140 mm × 180 mm × 70 mm
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- 3AUA0000110430
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ABB BCU‑12 (3AUA0000110430) — Detailed Product Specification, Introduction, and Application Guide
Product Overview
The ABB BCU‑12 (3AUA0000110430) is an advanced industrial control and protection interface module designed to manage complex processes and provide reliable signal acquisition, conditioning, and communication in industrial automation environments. The BCU‑12 serves as a central processing unit for interfacing analog and digital signals from sensors, actuators, and protective devices, transmitting them to supervisory control systems or distributed automation networks.
Built for industrial-grade performance, the BCU‑12 supports continuous operation under harsh conditions such as temperature fluctuations, vibration, and electrical interference. Its modular design and extensive I/O capabilities make it suitable for medium- to large-scale automation systems, where flexibility, accuracy, and system reliability are crucial.
Brand and Product Series
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Brand: ABB
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Product Series: BCU Control Units (Industrial Control & Protection Interface Series)
The BCU series consists of intelligent control and interface modules designed for industrial automation, energy management, and protection applications. BCU modules offer configurable I/O, diagnostics, modular expandability, and seamless integration with higher-level controllers or protection relays.
Product Introduction
The BCU‑12 is designed to handle both analog and digital signals, perform logic processing, and provide reliable communication to supervisory systems. It features signal isolation, high-accuracy conversion, fault detection, and status indication.
Key design features include:
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Modular architecture for flexible system integration
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Multi-signal support (digital and analog inputs/outputs)
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Built-in diagnostics with LED indicators for fault detection
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Industrial robustness against electrical noise, temperature variations, and vibration
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Scalable integration into distributed control systems (DCS) or programmable logic controllers (PLC)
Applications
Power Distribution Protection and Control
BCU‑12 is used in substations and industrial power networks to interface with protective relays, monitor electrical parameters, and implement control logic for breakers and fault management.
Process Automation
In chemical, pharmaceutical, and manufacturing industries, the BCU‑12 collects and conditions analog and digital signals from sensors to control processes efficiently.
Machine Safety and Automation
The unit supports safety interlocks, limit switches, emergency stops, and actuator control, ensuring machinery operates safely and reliably.
Energy Monitoring and Management
BCU‑12 provides high-accuracy data acquisition from meters, transducers, and sensors for energy usage analysis, load management, and system optimization.
Infrastructure and Facility Automation
It can monitor HVAC systems, water treatment facilities, and building automation infrastructure, providing real-time status and control feedback.
Product Advantages
Flexible I/O Handling
Supports multiple analog and digital channels, offering versatility for various industrial devices.
Modular and Scalable
Designed to integrate with additional modules or systems, allowing expansion for larger automation networks.
High Reliability
Engineered to withstand harsh industrial conditions including electrical interference, vibration, and extreme temperatures.
Built-in Diagnostics
LED indicators provide real-time feedback on power, channel activity, and fault status, simplifying troubleshooting.
Seamless Integration
Compatible with higher-level controllers, PLCs, and protection devices for smooth system integration.
Technical Specifications
| Specification | Details |
|---|---|
| Model | BCU‑12 (3AUA0000110430) |
| Module Type | Control and Protection Interface Unit |
| Digital Inputs | 24 inputs |
| Digital Outputs | 12 outputs |
| Analog Inputs | 12 channels (voltage/current) |
| Analog Outputs | 6 channels (voltage/current) |
| Input Signal Types | Voltage: ±10 V, 0–10 V; Current: 4–20 mA, 0–20 mA |
| Output Signal Types | Voltage: 0–10 V; Current: 4–20 mA |
| Resolution | 16‑bit |
| Sampling Time | ~20 ms per channel |
| Power Consumption | 10 W |
| Operating Temperature | –20°C to +60°C |
| Storage Temperature | –40°C to +85°C |
| Isolation | Channel‑to‑system isolation |
| Dimensions (H×W×D) | 140 mm × 180 mm × 70 mm |
| Weight (kg) | 2.10 kg |
| Mounting Method | DIN rail / Modular rack |
| Status Indicators | Power, I/O activity, and fault LEDs |
Related Models — Same Series or Similar Function
| Model | Digital Inputs | Digital Outputs | Analog Inputs | Analog Outputs | Power (W) | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| BCU‑02 | 16 | 8 | 8 | 4 | 8.0 | 120 × 160 × 60 | 1.40 |
| BCU‑03 | 24 | 12 | 12 | 6 | 10.0 | 140 × 170 × 65 | 1.60 |
| BCU‑05 | 32 | 16 | 16 | 8 | 12.0 | 150 × 180 × 70 | 1.95 |
| BCU‑10 | 16 | 16 | 8 | 8 | 9.0 | 130 × 160 × 60 | 1.45 |
| BCU‑20 | 32 | 32 | 16 | 16 | 14.0 | 180 × 200 × 75 | 2.30 |
Other Popular Models — Same Brand
| Model | Function | Channels/Outputs | Resolution/Type | Power (W) | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|
| DI810 | Digital Input Module | 16 digital inputs | Digital | 2.0 | 90 × 120 × 25 | 0.32 |
| DO810 | Digital Output Module | 16 digital outputs | Digital | 2.0 | 90 × 120 × 25 | 0.33 |
| AO820 | Analog Output Module | 16 analog outputs | 16‑bit | 3.0 | 90 × 120 × 40 | 0.50 |
| AI880 | Analog Input Extended Range | 8 analog inputs | 16‑bit | 2.0 | 90 × 120 × 30 | 0.35 |
| CI840 | Communication Interface Module | Network interface | Fieldbus / Ethernet | 3.5 | 90 × 120 × 40 | 0.60 |
Frequently Asked Questions (FAQ)
Q1: What is the main purpose of BCU‑12?
A1: BCU‑12 is a control and interface module that acquires, conditions, and communicates analog and digital signals for industrial automation and protection systems.
Q2: How many digital input channels does BCU‑12 provide?
A2: It provides 24 digital input channels.
Q3: How many analog inputs are supported?
A3: The module supports 12 analog input channels.
Q4: How many analog output channels are available?
A4: BCU‑12 has 6 analog output channels.
Q5: What is the resolution of analog signals?
A5: Analog channels use 16‑bit resolution.
Q6: What are the module dimensions?
A6: Dimensions are 140 mm × 180 mm × 70 mm.
Q7: What is the weight of BCU‑12?
A7: Approximately 2.10 kg.
Q8: Can it operate in harsh industrial environments?
A8: Yes, it is designed for environments with vibration, electrical noise, and wide temperature ranges.
Q9: Does BCU‑12 have built-in diagnostics?
A9: Yes, LED indicators show power, I/O activity, and fault status.
Q10: Can BCU‑12 be integrated into larger automation networks?
A10: Yes, it can be combined with other BCU series modules for scalable system integration.