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ABB NTAI05 – Analog Input Termination Unit for Infi90/Symphony DCS
Product Overview
The ABB NTAI05 is a high-density analog input termination unit belonging to the Infi90/Symphony series, engineered for industrial process control systems. It converts analog signals from field devices—such as temperature, pressure, and flow transmitters—into digital data for PLC or DCS processing. With 16 input channels and support for standard 4-20mA and 0-10V signals, it delivers reliable, noise-immune data acquisition for power, petrochemical, and metallurgy applications. Its compact DIN-rail form factor simplifies cabinet integration and system expansion.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | NTAI05 |
| Manufacturer | ABB |
| Product Type | Analog Input Termination Unit |
| Series | Infi90/Symphony |
| Channels | 16 analog inputs |
| Signal Types | 4-20mA DC, 0-10V DC |
| Accuracy | ±0.1% |
| Power | 24VDC (9–36VDC range), <4W |
| Isolation | 1500V DC |
| Operating Temperature | -20°C to +60°C |
| Mounting | DIN rail |
| Dimensions (HxWxD) | 78.74 × 215.9 × 233.7 mm |
| Weight | ~250g |
| Protection Class | IP20 |
ABB NTAI05
Key Features and Benefits
- High-Density Acquisition: 16-channel design reduces cabinet space and wiring complexity.
- Signal Flexibility: Accepts both current and voltage inputs to connect diverse field sensors.
- High Precision: ±0.1% accuracy ensures reliable process monitoring and control.
- Robust Isolation: 1500V DC isolation minimizes electrical noise and ground loop issues.
- Easy Integration: DIN-rail mounting and standard terminals enable fast installation and maintenance.
Related Models
- NTAI06: Enhanced analog input unit with extended temperature range and diagnostic features.
- NTUO01: Analog output termination unit for complementary control signal generation.
- NFTP01: Field termination panel designed for seamless pairing with NTAI05.
Installation and Maintenance
Mount the unit on a standard DIN rail in a clean, ventilated cabinet. Wire field devices to the input terminals following the wiring diagram. Verify 24VDC power supply and check for loose connections during quarterly inspections. Keep the enclosure free of dust to prevent signal degradation. When replacement is required, power off the system first to ensure safety; use only ABB-certified spare parts.
