Description
1. Product Description
The Yokogawa AAI141-H50/K4A00 is a high-performance analog input module designed for industrial automation systems, specifically engineered to monitor and transmit precise analog signals in complex control environments. As part of Yokogawa’s advanced portfolio, the AAI141-H50/K4A00 supports 16 non-isolated input channels, accepting 4–20 mA DC current or 1–5 V DC voltage signals from 2-wire/4-wire transmitters. Its integrated HART communication (via the
-H suffix) enables digital data exchange, enhancing diagnostic capabilities and remote configuration. The module is optimized for reliability, with a compact design (0.2 kg) and compatibility with multiple connection options (pressure clamp terminals, KS cables, MIL connectors). Ideal for applications requiring real-time data acquisition and control, the AAI141-H50/K4A00 ensures seamless integration into Yokogawa’s Centum VP DCS and other industrial control systems.2. Product Parameters
| Parameter | Specification |
|---|---|
| Input Signal | 4–20 mA DC (current), 1–5 V DC (voltage) |
| Number of Channels | 16 (non-isolated) |
| Accuracy | ±16 μA (current), ±4 mV (voltage) |
| Data Update Period | 10 ms |
| Hart Communication | Supported (R3.02+ firmware) |
| Transmitter Power Supply | 14.8–26.4 V DC (27 mA max output) |
| Input Resistance (Power On) | 400–1000 Ω (current), ≥1 MΩ (voltage) |
| Drift (Temperature) | ±16 μA/10°C (current), ±4 mV/10°C (voltage) |
| Current Consumption | 310 mA (5 V DC), 450 mA (24 V DC) |
| Explosion Protection | None (suffix code “5”) |
| Connection Options | Pressure clamp terminals, KS cable (ATK4A-00 adapter), MIL connectors |
AAI141-H50/K4A00
3. Advantages and Characteristics
- Precision and Reliability: The AAI141-H50/K4A00 offers high accuracy (±16 μA for current inputs) and low drift, ensuring stable performance in fluctuating temperatures (±16 μA/10°C).
- HART-Enabled Intelligence: Digital HART communication allows remote configuration, diagnostics, and firmware updates, reducing downtime and maintenance costs.
- Flexible Connectivity: Supports multiple wiring options (terminals, KS cables, MIL connectors) for easy integration into diverse industrial setups.
- Dual Redundancy Support: Compatible with dual redundant configurations, enhancing system availability in critical applications.
- Compact Design: Lightweight (0.2 kg) and space-efficient, suitable for dense control panels.
4. Application Areas and Cases
Industries: Manufacturing, energy, chemical processing, water treatment, and oil & gas.
Scenarios: Monitoring pressure/temperature transmitters, flow meters, and process sensors in DCS systems.
Case Study: A chemical plant in Southeast Asia deployed the AAI141-H50/K4A00 to monitor 16 temperature sensors in a reactor. The module’s HART functionality enabled real-time troubleshooting of sensor anomalies, reducing unplanned downtime by 20% and improving process efficiency.
Scenarios: Monitoring pressure/temperature transmitters, flow meters, and process sensors in DCS systems.
Case Study: A chemical plant in Southeast Asia deployed the AAI141-H50/K4A00 to monitor 16 temperature sensors in a reactor. The module’s HART functionality enabled real-time troubleshooting of sensor anomalies, reducing unplanned downtime by 20% and improving process efficiency.
5. Competitor Comparison
Compared to similar analog input modules, the AAI141-H50/K4A00 stands out with:
- Higher Channel Density: 16 channels (vs. 8–12 channels in 竞品).
- Integrated HART Support: Built-in digital communication (eliminating need for external adapters).
- Wide Voltage Range: Transmitter power supply (14.8–26.4 V DC) accommodates diverse field devices.
- Lower Drift: Industry-leading temperature stability (±16 μA/10°C vs. ±20–25 μA/10°C in comparable models).
AAI141-H50/K4A00
6. Selection Recommendations
- Compatibility: Ensure compatibility with your DCS (e.g., Yokogawa Centum VP) and HART-enabled devices.
- Environment: Verify temperature range (-20°C to 70°C with G3 option) and explosion protection requirements (non-isolated design; use barriers for hazardous zones).
- Connection: Choose between terminal blocks (ATA4S-00), KS cables (ATK4A-00), or MIL connectors (ACCC01) based on cabling standards.
- Budget: Balance channel density and HART features against cost (competitive pricing vs. single-function modules).
7. Precautions
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Wiring: Separate analog/digital cables and use shielded wires to minimize noise. Ground shielding layers properly.
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Power Supply: Ensure transmitter voltage (14.8 V min. at 20 mA) meets field device requirements; account for wiring voltage drop.
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HART Configuration: Update EB401 firmware (rev. 2+) for remote node HART functionality.
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Maintenance: Regularly inspect connectors for corrosion; replace faulty modules immediately to avoid system-wide failures.
