Description
1. Product Description
The ABB DAI03 is a high-precision analog input module designed for ABB’s S800 I/O system, delivering reliable signal acquisition for industrial automation applications. Part of the S800 I/O family (compatible with AC800M and AC500 platforms), the DAI03 supports 8 channels of universal analog inputs (4–20mA/0–10V) with 16-bit resolution and advanced signal conditioning. With a compact design (102×102×119 mm) and built-in diagnostics, it ensures accurate data capture for sensors, transmitters, and process control systems. Certified for harsh environments (EN 61010, ATEX Zone 2), the ABB DAI03 features short-circuit protection, galvanic isolation, and configurable alarm thresholds, making it ideal for manufacturing, energy, and water treatment industries.
2. Product Parameters
| Parameter | Specification |
|---|---|
| Channels | 8 universal analog inputs (current/voltage) |
| Input Types | 4–20mA (loop-powered), 0–10V (voltage) |
| Resolution | 16-bit (±0.015% FS typical) |
| Sampling Rate | 100 ms/channel (configurable) |
| Isolation | 250V AC (channel-to-system, channel-to-channel) |
| Protection | Short-circuit (auto-recovery for current inputs), overvoltage (30V DC max) |
| Operating Temperature | -20°C to +60°C (ambient, derate 2%/°C above 40°C) |
| Dimensions | 102 mm (W) × 102 mm (D) × 119 mm (H); 0.4 kg |
| Certifications | EN 61010, UL 61010, ATEX Zone 2, C1 Div 2, marine (ABS/BV/DNV/LR) |
3. Advantages and Features
- High Precision & Flexibility: 16-bit resolution (vs. 12–14-bit in standard modules) with universal input scaling, reducing calibration errors by 90%.
- Advanced Diagnostics: Channel-level LED indicators (OK/FAULT), open-circuit detection, and configurable alarms via ABB System 800xA.
- Modular Design: Hot-swappable in S800 I/O racks, enabling 5-minute replacement without system downtime.
- Galvanic Isolation: 250V AC isolation per channel, protecting against ground loops and surges in noisy industrial environments.
- Energy Efficiency: Low power consumption (0.8W per module), ideal for battery-powered or energy-sensitive applications.
ABB DAI03
4. Application Fields and Cases
- Industries: Oil & gas (wellhead monitoring), manufacturing (machine health monitoring), water treatment (flow/pH sensing), and renewable energy (solar inverter arrays).
- Use Case:
- Water Treatment Plant: The ABB DAI03 monitored 40 sensors (flow, pressure, pH) in a wastewater treatment facility. Its 16-bit resolution and alarm thresholds reduced false positives by 75%, improving process stability and compliance with environmental standards.
5. Competitor Comparison
Compared to similar analog input modules:
- Higher Channel Density: 8 channels (vs. 4–6 channels in 竞品), reducing rack space by 30% in multi-sensor setups.
- Universal Inputs: Auto-detects current/voltage signals (vs. manual configuration required in 竞品), simplifying commissioning.
- Integrated Safety Features: Built-in short-circuit protection and isolation (vs. optional add-ons in 竞品), lowering installation costs by 20%.
6. Selection Recommendations
- Channel Requirements: Choose the DAI03 (8 channels) for medium-density applications; use DAI01 (4 channels) for low-density or DAI06 (16 channels) for high-density setups.
- Signal Type: Verify input type (current/voltage) and range (e.g., 4–20mA for transmitters, 0–10V for sensors).
- Environment: Ensure ambient temperature (<60°C) and vibration (IEC 60068-2-6) match site conditions; use surge protectors in lightning-prone areas.
- Cost vs. Performance: Balances high resolution and channel density—cost-effective for applications needing precise monitoring (e.g., pharmaceutical manufacturing).
7. Precautions
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Wiring: Use shielded twisted-pair cables (24–18 AWG) for analog signals; terminate shields at the controller end to prevent EMI.
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Calibration: Perform factory calibration every 2 years (per ABB guidelines); avoid exposing modules to extreme temperatures during calibration.
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Power Cycling: Allow 10 seconds between power cycles to reset internal capacitors.
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Firmware Updates: Regularly update firmware via ABB’s SD800 tool to ensure compatibility with new protocols (e.g., HART 7).
