Description
1. Product Description
ABB AI845 3BSE023675R1 is a high-precision analog input module designed for industrial automation systems, enabling seamless conversion of analog signals from sensors into digital data for processing by PLCs or distributed control systems (DCS). Engineered by ABB, a global leader in industrial automation, AI845 3BSE023675R1 features 8 isolated input channels, each configurable for voltage (0–5 V, 1–5 V) or current (4–20 mA, 0–20 mA) inputs, making it versatile for the oil & gas, chemical, and manufacturing sectors. The module supports HART® communication for remote diagnostics and calibration, reducing maintenance downtime. With its rugged design and advanced noise immunity, ABB AI845 3BSE023675R1 ensures reliable signal acquisition in harsh environments, such as high-temperature process lines or high-electromagnetic interference (EMI) zones.
2. Product Parameters
| Parameter | Specification |
|---|---|
| Channels | 8 isolated analog inputs |
| Input Types | Voltage (0–5 V, 1–5 V DC), current (4–20 mA, 0–20 mA) |
| Resolution | 12-bit ADC |
| Accuracy | ±0.1% of full scale |
| HART® Support | Yes (channel-level pass-through) |
| Isolation | 500 V AC between channels and system ground |
| Transmitter Power | 24 V DC (10 mA per channel, short-circuit protected) |
| Update Rate | 250 ms (per channel) |
| Operating Temperature | -40°C to +70°C |
| Mounting | DIN rail (TS 35/7.5) |
| Dimensions (W×H×D) | 45 mm × 102 mm × 119 mm |
| Compatibility | ABB AC 800M, Advant 800xA, and PLCnext platforms |
AI845 3BSE023675R1
3. Advantages and Features
ABB AI845 3BSE023675R1 stands out for its flexibility and diagnostic capabilities. Each channel can be individually configured for voltage or current inputs via software, eliminating the need for hardware reconfiguration—a feature that reduces setup time by 30% in mixed-sensor applications. The module’s built-in self-diagnostics monitor for faults like open circuits or overvoltage, with LED indicators providing real-time status updates. For example, in a chemical plant, AI845 3BSE023675R1 detected a failing pressure sensor’s drift (0.5% deviation from setpoint) before it impacted process quality, preventing a potential $20,000 loss in rejected batches. Its HART® compatibility also enables remote configuration, reducing technician visits to hazardous areas by 50%.
4. Application Areas and Application Cases
Industry Applications:
- Oil & Gas: Monitoring pressure/temperature in pipelines and refinery processes.
- Chemical Processing: Real-time tracking of flow rates and reactor conditions.
- Manufacturing: Quality control in automotive assembly lines (e.g., paint booth humidity sensors).
Case Study: A food and beverage manufacturer integrated ABB AI845 3BSE023675R1 into its pasteurization system to monitor 8 temperature sensors in a steam tunnel. The module’s high noise immunity (EMC compliance with IEC 61000-6-2) filtered out interference from motor drives, ensuring accurate temperature readings within ±0.5°C. This improved product consistency, reducing spoilage by 18% and increasing line efficiency by 15%.
5. Competitive Comparison
Compared to standard analog input modules, ABB AI845 3BSE023675R1 offers superior environmental resilience, operating reliably at -40°C to +70°C without derating, while many competitors require cooling above 50°C. Its channel-level HART® support provides richer diagnostic data than basic modules, which often lack digital communication capabilities. The module’s compact design (45 mm width) also saves 20% space in control cabinets compared to legacy 8-channel models, ideal for retrofits in space-constrained environments.
AI845 3BSE023675R1
6. Selection Recommendations
- Sensor Compatibility: Confirm input type (voltage/current) and range to match your sensors (e.g., 4–20 mA transmitters vs. 0–5 V thermocouples).
- HART® Needs: Prioritize this module if remote diagnostics or digital sensor integration is required.
- Environmental Conditions: Choose AI845 3BSE023675R1 for extreme temperatures or high-EMI zones, as its isolation and EMC ratings exceed industry standards.
- System Scalability: Ensure compatibility with your controller’s I/O bus (e.g., ABB’s S800 I/O system) for seamless integration.
7. Precautions
- Wiring: Use shielded twisted-pair cables for analog signals; separate from power cables by at least 100 mm to minimize EMI.
- Calibration: Perform annual calibration using ABB’s Control Builder software to maintain accuracy, especially for critical processes.
- Hot-Swap Limitations: Avoid replacing the module while powered to prevent damage; always follow ABB’s lockout-tagout (LOTO) procedures.
- Redundancy: For fault-critical applications, pair with ABB’s redundant power supplies and controller modules to ensure uninterrupted operation.
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